Florida Senate - 2025 SB 1120 By Senator Ingoglia 11-00641-25 20251120__ 1 A bill to be entitled 2 An act relating to onsite sewage treatment and 3 disposal systems; amending s. 381.0065, F.S.; 4 specifying that a construction permit for the 5 construction of an onsite sewage treatment and 6 disposal system for a single-family dwelling is valid 7 in perpetuity; providing an exception; prohibiting a 8 municipality or political subdivision from placing 9 certain requirements on applicants for a building 10 permit for a single-family dwelling; providing an 11 effective date. 12 13 Be It Enacted by the Legislature of the State of Florida: 14 15 Section 1. Subsection (4) of section 381.0065, Florida 16 Statutes, is amended to read: 17 381.0065 Onsite sewage treatment and disposal systems; 18 regulation.— 19 (4) PERMITS; INSTALLATION; CONDITIONS.—A person may not 20 construct, repair, modify, abandon, or operate an onsite sewage 21 treatment and disposal system without first obtaining a permit 22 approved by the department. The department may issue permits to 23 carry out this section, except that the issuance of a permit for 24 work seaward of the coastal construction control line 25 established under s. 161.053 isshall becontingent upon receipt 26 of any required coastal construction control line permit from 27 the department. A construction permit is valid for 18 months 28 after the date of issuance and may be extended by the department 29 for one 90-day period under rules adopted by the department, 30 unless the construction permit is for a single-family dwelling. 31 A construction permit under this section for a single-family 32 dwelling is valid in perpetuity after the date of issuance, 33 except for work seaward of the coastal construction control line 34 established under s. 161.053. A repair permit is valid for 90 35 days after the date of issuance. An operating permit must be 36 obtained before the use of any aerobic treatment unit or if the 37 establishment generates commercial waste. Buildings or 38 establishments that use an aerobic treatment unit or generate 39 commercial waste shall be inspected by the department at least 40 annually to assure compliance with the terms of the operating 41 permit. The operating permit for a commercial wastewater system 42 is valid for 1 year after the date of issuance and must be 43 renewed annually. The operating permit for an aerobic treatment 44 unit is valid for 2 years after the date of issuance and must be 45 renewed every 2 years. If all information pertaining to the 46 siting, location, and installation conditions or repair of an 47 onsite sewage treatment and disposal system remains the same, a 48 construction or repair permit for the onsite sewage treatment 49 and disposal system may be transferred to another person, if the 50 transferee files, within 60 days after the transfer of 51 ownership, an amended application providing all corrected 52 information and proof of ownership of the property. A fee is not 53 associated with the processing of this supplemental information. 54 A person may not contract to construct, modify, alter, repair, 55 service, abandon, or maintain any portion of an onsite sewage 56 treatment and disposal system without being registered under 57 part III of chapter 489. A property owner who personally 58 performs construction, maintenance, or repairs to a system 59 serving his or her own owner-occupied single-family residence is 60 exempt from registration requirements for performing such 61 construction, maintenance, or repairs on that residence, but is 62 subject to all permitting requirements. A municipality or 63 political subdivision of the state may not issue a building or 64 plumbing permit for any building that requires the use of an 65 onsite sewage treatment and disposal system unless the owner or 66 builder has received a construction permit for such system from 67 the department, or the building permit is for a single-family 68 residential dwelling. For a single-family residential dwelling, 69 a municipality or political subdivision of the state may not 70 require as a condition of issuing a building permit for such 71 dwelling that an applicant first obtain a construction permit 72 from the department for an onsite sewage treatment and disposal 73 system. A building or structure may not be occupied and a 74 municipality, political subdivision, or any state or federal 75 agency may not authorize occupancy until the department approves 76 the final installation of the onsite sewage treatment and 77 disposal system. A municipality or political subdivision of the 78 state may not approve any change in occupancy or tenancy of a 79 building that uses an onsite sewage treatment and disposal 80 system until the department has reviewed the use of the system 81 with the proposed change, approved the change, and amended the 82 operating permit. 83 (a) Subdivisions and lots in which each lot has a minimum 84 area of at least one-half acre and has either a minimum 85 dimension of 100 feet or a mean of at least 100 feet of the side 86 bordering the street and the distance formed by a line parallel 87 to the side bordering the street drawn between the two most 88 distant points of the remainder of the lot may be developed with 89 a water system regulated under s. 381.0062 and onsite sewage 90 treatment and disposal systems, provided the projected daily 91 sewage flow does not exceed an average of 1,500 gallons per acre 92 per day, and provided satisfactory drinking water can be 93 obtained and all distance and setback, soil condition, water 94 table elevation, and other related requirements of this section 95 and rules adopted under this section can be met. 96 (b) Subdivisions and lots using a public water system as 97 defined in s. 403.852 may use onsite sewage treatment and 98 disposal systems, provided there are no more than four lots per 99 acre, provided the projected daily sewage flow does not exceed 100 an average of 2,500 gallons per acre per day, and provided that 101 all distance and setback, soil condition, water table elevation, 102 and other related requirements that are generally applicable to 103 the use of onsite sewage treatment and disposal systems are met. 104 (c) Notwithstanding paragraphs (a) and (b), for 105 subdivisions platted of record on or before October 1, 1991, 106 when a developer or other appropriate entity has previously made 107 or makes provisions, including financial assurances or other 108 commitments, acceptable to the department, that a central water 109 system will be installed by a regulated public utility based on 110 a density formula, private potable wells may be used with onsite 111 sewage treatment and disposal systems until the agreed-upon 112 densities are reached. In a subdivision regulated by this 113 paragraph, the average daily sewage flow may not exceed 2,500 114 gallons per acre per day. This section does not affect the 115 validity of existing prior agreements. After October 1, 1991, 116 the exception provided under this paragraph is not available to 117 a developer or other appropriate entity. 118 (d) Paragraphs (a) and (b) do not apply to any proposed 119 residential subdivision with more than 50 lots or to any 120 proposed commercial subdivision with more than 5 lots where a 121 publicly owned or investor-owned sewage treatment system is 122 available. This paragraph does not allow development of 123 additional proposed subdivisions in order to evade the 124 requirements of this paragraph. 125 (e) The department shall adopt rules relating to the 126 location of onsite sewage treatment and disposal systems, 127 including establishing setback distances, to prevent groundwater 128 contamination and surface water contamination and to preserve 129 the public health. The rules must consider conventional and 130 enhanced nutrient-reducing onsite sewage treatment and disposal 131 system designs, impaired or degraded water bodies, domestic 132 wastewater and drinking water infrastructure, potable water 133 sources, nonpotable wells, stormwater infrastructure, the onsite 134 sewage treatment and disposal system remediation plans developed 135 pursuant to s. 403.067(7)(a)9.b., nutrient pollution, and the 136 recommendations of the onsite sewage treatment and disposal 137 systems technical advisory committee established pursuant to 138 former s. 381.00652. The rules must also allow a person to apply 139 for and receive a variance from a rule requirement upon 140 demonstration that the requirement would cause an undue hardship 141 and granting the variance would not cause or contribute to the 142 exceedance of a total maximum daily load. 143 (f) Onsite sewage treatment and disposal systems that are 144 permitted before June 21, 2022, may not be placed closer than: 145 1. Seventy-five feet from a private potable well. 146 2. Two hundred feet from a public potable well serving a 147 residential or nonresidential establishment having a total 148 sewage flow of greater than 2,000 gallons per day. 149 3. One hundred feet from a public potable well serving a 150 residential or nonresidential establishment having a total 151 sewage flow of less than or equal to 2,000 gallons per day. 152 4. Fifty feet from any nonpotable well. 153 5. Ten feet from any storm sewer pipe, to the maximum 154 extent possible, but in no instance shall the setback be less 155 than 5 feet. 156 6. Seventy-five feet from the mean high-water line of a 157 tidally influenced surface water body. 158 7. Seventy-five feet from the mean annual flood line of a 159 permanent nontidal surface water body. 160 8. Fifteen feet from the design high-water line of 161 retention areas, detention areas, or swales designed to contain 162 standing or flowing water for less than 72 hours after a 163 rainfall or the design high-water level of normally dry drainage 164 ditches or normally dry individual lot stormwater retention 165 areas. 166 (g) This section and rules adopted under this section 167 relating to soil condition, water table elevation, distance, and 168 other setback requirements must be equally applied to all lots, 169 with the following exceptions: 170 1. Any residential lot that was platted and recorded on or 171 after January 1, 1972, or that is part of a residential 172 subdivision that was approved by the appropriate permitting 173 agency on or after January 1, 1972, and that was eligible for an 174 onsite sewage treatment and disposal system construction permit 175 on the date of such platting and recording or approval shall be 176 eligible for an onsite sewage treatment and disposal system 177 construction permit, regardless of when the application for a 178 permit is made. If rules in effect at the time the permit 179 application is filed cannot be met, residential lots platted and 180 recorded or approved on or after January 1, 1972, shall, to the 181 maximum extent possible, comply with the rules in effect at the 182 time the permit application is filed. At a minimum, however, 183 those residential lots platted and recorded or approved on or 184 after January 1, 1972, but before January 1, 1983, shall comply 185 with those rules in effect on January 1, 1983, and those 186 residential lots platted and recorded or approved on or after 187 January 1, 1983, shall comply with those rules in effect at the 188 time of such platting and recording or approval. In determining 189 the maximum extent of compliance with current rules that is 190 possible, the department shall allow structures and 191 appurtenances thereto which were authorized at the time such 192 lots were platted and recorded or approved. 193 2. Lots platted before 1972 are subject to a 50-foot 194 minimum surface water setback and are not subject to lot size 195 requirements. The projected daily flow for onsite sewage 196 treatment and disposal systems for lots platted before 1972 may 197 not exceed: 198 a. Two thousand five hundred gallons per acre per day for 199 lots served by public water systems as defined in s. 403.852. 200 b. One thousand five hundred gallons per acre per day for 201 lots served by water systems regulated under s. 381.0062. 202 (h)1. The department may grant variances in hardship cases 203 which may be less restrictive than the provisions specified in 204 this section. If a variance is granted and the onsite sewage 205 treatment and disposal system construction permit has been 206 issued, the variance may be transferred with the system 207 construction permit, if the transferee files, within 60 days 208 after the transfer of ownership, an amended construction permit 209 application providing all corrected information and proof of 210 ownership of the property and if the same variance would have 211 been required for the new owner of the property as was 212 originally granted to the original applicant for the variance. A 213 fee is not associated with the processing of this supplemental 214 information. A variance may not be granted under this section 215 until the department is satisfied that: 216 a. The hardship was not caused intentionally by the action 217 of the applicant; 218 b. A reasonable alternative, taking into consideration 219 factors such as cost, does not exist for the treatment of the 220 sewage; and 221 c. The discharge from the onsite sewage treatment and 222 disposal system will not adversely affect the health of the 223 applicant or the public or significantly degrade the groundwater 224 or surface waters. 225 226 Where soil conditions, water table elevation, and setback 227 provisions are determined by the department to be satisfactory, 228 special consideration must be given to those lots platted before 229 1972. 230 2. The department shall appoint and staff a variance review 231 and advisory committee, which shall meet monthly to recommend 232 agency action on variance requests. The committee shall make its 233 recommendations on variance requests at the meeting in which the 234 application is scheduled for consideration, except for an 235 extraordinary change in circumstances, the receipt of new 236 information that raises new issues, or when the applicant 237 requests an extension. The committee shall consider the criteria 238 in subparagraph 1. in its recommended agency action on variance 239 requests and shall also strive to allow property owners the full 240 use of their land where possible. 241 a. The committee is composed of the following: 242 (I) The Secretary of Environmental Protection or his or her 243 designee. 244 (II) A representative from the county health departments. 245 (III) A representative from the home building industry 246 recommended by the Florida Home Builders Association. 247 (IV) A representative from the septic tank industry 248 recommended by the Florida Onsite Wastewater Association. 249 (V) A representative from the Department of Health. 250 (VI) A representative from the real estate industry who is 251 also a developer in this state who develops lots using onsite 252 sewage treatment and disposal systems, recommended by the 253 Florida Association of Realtors. 254 (VII) A representative from the engineering profession 255 recommended by the Florida Engineering Society. 256 b. Members shall be appointed for a term of 3 years, with 257 such appointments being staggered so that the terms of no more 258 than two members expire in any one year. Members shall serve 259 without remuneration, but if requested, shall be reimbursed for 260 per diem and travel expenses as provided in s. 112.061. 261 3. The variance review and advisory committee is not 262 responsible for reviewing water well permitting. However, the 263 committee shall consider all requirements of law related to 264 onsite sewage treatment and disposal systems when making 265 recommendations on variance requests for onsite sewage treatment 266 and disposal system permits. 267 (i) A construction permit may not be issued for an onsite 268 sewage treatment and disposal system in any area zoned or used 269 for industrial or manufacturing purposes, or its equivalent, 270 where a publicly owned or investor-owned sewage treatment system 271 is available, or where a likelihood exists that the system will 272 receive toxic, hazardous, or industrial waste. An existing 273 onsite sewage treatment and disposal system may be repaired if a 274 publicly owned or investor-owned sewage treatment system is not 275 available within 500 feet of the building sewer stub-out and if 276 system construction and operation standards can be met. This 277 paragraph does not require publicly owned or investor-owned 278 sewage treatment systems to accept anything other than domestic 279 wastewater. 280 1. A building located in an area zoned or used for 281 industrial or manufacturing purposes, or its equivalent, when 282 such building is served by an onsite sewage treatment and 283 disposal system, must not be occupied until the owner or tenant 284 has obtained written approval from the department. The 285 department may not grant approval when the proposed use of the 286 system is to dispose of toxic, hazardous, or industrial 287 wastewater or toxic or hazardous chemicals. 288 2. Each person who owns or operates a business or facility 289 in an area zoned or used for industrial or manufacturing 290 purposes, or its equivalent, or who owns or operates a business 291 that has the potential to generate toxic, hazardous, or 292 industrial wastewater or toxic or hazardous chemicals, and uses 293 an onsite sewage treatment and disposal system that is installed 294 on or after July 5, 1989, must obtain an annual system operating 295 permit from the department. A person who owns or operates a 296 business that uses an onsite sewage treatment and disposal 297 system that was installed and approved before July 5, 1989, does 298 not need to obtain a system operating permit. However, upon 299 change of ownership or tenancy, the new owner or operator must 300 notify the department of the change, and the new owner or 301 operator must obtain an annual system operating permit, 302 regardless of the date that the system was installed or 303 approved. 304 3. The department shall periodically review and evaluate 305 the continued use of onsite sewage treatment and disposal 306 systems in areas zoned or used for industrial or manufacturing 307 purposes, or its equivalent, and may require the collection and 308 analyses of samples from within and around such systems. If the 309 department finds that toxic or hazardous chemicals or toxic, 310 hazardous, or industrial wastewater have been or are being 311 disposed of through an onsite sewage treatment and disposal 312 system, the department shall initiate enforcement actions 313 against the owner or tenant to ensure adequate cleanup, 314 treatment, and disposal. 315 (j) An onsite sewage treatment and disposal system designed 316 by a professional engineer registered in the state and certified 317 by such engineer as complying with performance criteria adopted 318 by the department must be approved by the department subject to 319 the following: 320 1. The performance criteria applicable to engineer-designed 321 systems must be limited to those necessary to ensure that such 322 systems do not adversely affect the public health or 323 significantly degrade the groundwater or surface water. Such 324 performance criteria shall include consideration of the quality 325 of system effluent, the proposed total sewage flow per acre, 326 wastewater treatment capabilities of the natural or replaced 327 soil, water quality classification of the potential surface 328 water-receiving body, and the structural and maintenance 329 viability of the system for the treatment of domestic 330 wastewater. However, performance criteria shall address only the 331 performance of a system and not a system’s design. 332 2. A person electing to use an engineer-designed system 333 shall, upon completion of the system design, submit such design, 334 certified by a registered professional engineer, to the county 335 health department. The county health department may use an 336 outside consultant to review the engineer-designed system, with 337 the actual cost of such review to be borne by the applicant. 338 Within 5 working days after receiving an engineer-designed 339 system permit application, the county health department shall 340 request additional information if the application is not 341 complete. Within 15 working days after receiving a complete 342 application for an engineer-designed system, the county health 343 department shall issue the permit or, if it determines that the 344 system does not comply with the performance criteria, shall 345 notify the applicant of that determination and refer the 346 application to the department for a determination as to whether 347 the system should be approved, disapproved, or approved with 348 modification. The department engineer’s determination shall 349 prevail over the action of the county health department. The 350 applicant shall be notified in writing of the department’s 351 determination and of the applicant’s rights to pursue a variance 352 or seek review under the provisions of chapter 120. 353 3. The owner of an engineer-designed performance-based 354 system must maintain a current maintenance service agreement 355 with a maintenance entity permitted by the department. The 356 maintenance entity shall inspect each system at least twice each 357 year and shall report quarterly to the department on the number 358 of systems inspected and serviced. The reports may be submitted 359 electronically. 360 4. The property owner of an owner-occupied, single-family 361 residence may be approved and permitted by the department as a 362 maintenance entity for his or her own performance-based 363 treatment system upon written certification from the system 364 manufacturer’s approved representative that the property owner 365 has received training on the proper installation and service of 366 the system. The maintenance service agreement must conspicuously 367 disclose that the property owner has the right to maintain his 368 or her own system and is exempt from contractor registration 369 requirements for performing construction, maintenance, or 370 repairs on the system but is subject to all permitting 371 requirements. 372 5. The property owner shall obtain a biennial system 373 operating permit from the department for each system. The 374 department shall inspect the system at least annually, or on 375 such periodic basis as the fee collected permits, and may 376 collect system-effluent samples if appropriate to determine 377 compliance with the performance criteria. The fee for the 378 biennial operating permit shall be collected beginning with the 379 second year of system operation. 380 6. If an engineer-designed system fails to properly 381 function or fails to meet performance standards, the system 382 shall be re-engineered, if necessary, to bring the system into 383 compliance with the provisions of this section. 384 (k) An innovative system may be approved in conjunction 385 with an engineer-designed site-specific system that is certified 386 by the engineer to meet the performance-based criteria adopted 387 by the department. 388 (l) For the Florida Keys, the department shall adopt a 389 special rule for the construction, installation, modification, 390 operation, repair, maintenance, and performance of onsite sewage 391 treatment and disposal systems which considers the unique soil 392 conditions and water table elevations, densities, and setback 393 requirements. On lots where a setback distance of 75 feet from 394 surface waters, saltmarsh, and buttonwood association habitat 395 areas cannot be met, an injection well, approved and permitted 396 by the department, may be used for disposal of effluent from 397 onsite sewage treatment and disposal systems. The following 398 additional requirements apply to onsite sewage treatment and 399 disposal systems in Monroe County: 400 1. The county, each municipality, and those special 401 districts established for the purpose of the collection, 402 transmission, treatment, or disposal of sewage shall ensure, in 403 accordance with the specific schedules adopted by the 404 Administration Commission under s. 380.0552, the completion of 405 onsite sewage treatment and disposal system upgrades to meet the 406 requirements of this paragraph. 407 2. Onsite sewage treatment and disposal systems must cease 408 discharge by December 31, 2015, or must comply with department 409 rules and provide the level of treatment which, on a permitted 410 annual average basis, produces an effluent that contains no more 411 than the following concentrations: 412 a. Biochemical Oxygen Demand (CBOD5) of 10 mg/l. 413 b. Suspended Solids of 10 mg/l. 414 c. Total Nitrogen, expressed as N, of 10 mg/l or a 415 reduction in nitrogen of at least 70 percent. A system that has 416 been tested and certified to reduce nitrogen concentrations by 417 at least 70 percent shall be deemed to be in compliance with 418 this standard. 419 d. Total Phosphorus, expressed as P, of 1 mg/l. 420 421 In addition, onsite sewage treatment and disposal systems 422 discharging to an injection well must provide basic disinfection 423 as defined by department rule. 424 3. In areas not scheduled to be served by a central 425 sewerage system, onsite sewage treatment and disposal systems 426 must, by December 31, 2015, comply with department rules and 427 provide the level of treatment described in subparagraph 2. 428 4. In areas scheduled to be served by a central sewerage 429 system by December 31, 2015, if the property owner has paid a 430 connection fee or assessment for connection to the central 431 sewerage system, the property owner may install a holding tank 432 with a high water alarm or an onsite sewage treatment and 433 disposal system that meets the following minimum standards: 434 a. The existing tanks must be pumped and inspected and 435 certified as being watertight and free of defects in accordance 436 with department rule; and 437 b. A sand-lined drainfield or injection well in accordance 438 with department rule must be installed. 439 5. Onsite sewage treatment and disposal systems must be 440 monitored for total nitrogen and total phosphorus concentrations 441 as required by department rule. 442 6. The department shall enforce proper installation, 443 operation, and maintenance of onsite sewage treatment and 444 disposal systems pursuant to this chapter, including ensuring 445 that the appropriate level of treatment described in 446 subparagraph 2. is met. 447 7. The authority of a local government, including a special 448 district, to mandate connection of an onsite sewage treatment 449 and disposal system is governed by s. 4, chapter 99-395, Laws of 450 Florida. 451 8. Notwithstanding any other law, an onsite sewage 452 treatment and disposal system installed after July 1, 2010, in 453 unincorporated Monroe County, excluding special wastewater 454 districts, that complies with the standards in subparagraph 2. 455 is not required to connect to a central sewerage system until 456 December 31, 2020. 457 (m) A product sold in the state for use in onsite sewage 458 treatment and disposal systems may not contain any substance in 459 concentrations or amounts that would interfere with or prevent 460 the successful operation of such system, or that would cause 461 discharges from such systems to violate applicable water quality 462 standards. The department shall publish criteria for products 463 known or expected to meet the conditions of this paragraph. If a 464 product does not meet such criteria, such product may be sold if 465 the manufacturer satisfactorily demonstrates to the department 466 that the conditions of this paragraph are met. 467 (n) Evaluations for determining the seasonal high-water 468 table elevations or the suitability of soils for the use of a 469 new onsite sewage treatment and disposal system shall be 470 performed by department personnel, professional engineers 471 registered in the state, or such other persons with expertise, 472 as defined by rule, in making such evaluations. Evaluations for 473 determining mean annual flood lines shall be performed by those 474 persons identified in paragraph (2)(l). The department shall 475 accept evaluations submitted by professional engineers and such 476 other persons as meet the expertise established by this section 477 or by rule unless the department has a reasonable scientific 478 basis for questioning the accuracy or completeness of the 479 evaluation. 480 (o) An application for an onsite sewage treatment and 481 disposal system permit shall be completed in full, signed by the 482 owner or the owner’s authorized representative, or by a 483 contractor licensed under chapter 489, and shall be accompanied 484 by all required exhibits and fees. Specific documentation of 485 property ownership is not required as a prerequisite to the 486 review of an application or the issuance of a permit. The 487 issuance of a permit does not constitute determination by the 488 department of property ownership. 489 (p) The department may not require any form of subdivision 490 analysis of property by an owner, developer, or subdivider 491 before submission of an application for an onsite sewage 492 treatment and disposal system. 493 (q) This section does not limit the power of a municipality 494 or county to enforce other laws for the protection of the public 495 health and safety. 496 (r) In the siting of onsite sewage treatment and disposal 497 systems, including drainfields, shoulders, and slopes, guttering 498 may not be required on single-family residential dwelling units 499 for systems located greater than 5 feet from the roof drip line 500 of the house. If guttering is used on residential dwelling 501 units, the downspouts shall be directed away from the 502 drainfield. 503 (s) Notwithstanding subparagraph (g)1., onsite sewage 504 treatment and disposal systems located in floodways of the 505 Suwannee and Aucilla Rivers must adhere to the following 506 requirements: 507 1. The absorption surface of the drainfield may not be 508 subject to flooding based on 10-year flood elevations. Provided, 509 however, for lots or parcels created by the subdivision of land 510 in accordance with applicable local government regulations 511 before January 17, 1990, if an applicant cannot construct a 512 drainfield system with the absorption surface of the drainfield 513 at an elevation equal to or above 10-year flood elevation, the 514 department shall issue a permit for an onsite sewage treatment 515 and disposal system within the 10-year floodplain of rivers, 516 streams, and other bodies of flowing water if all of the 517 following criteria are met: 518 a. The lot is at least one-half acre in size; 519 b. The bottom of the drainfield is at least 36 inches above 520 the 2-year flood elevation; and 521 c. The applicant installs a waterless, incinerating, or 522 organic waste composting toilet and a graywater system and 523 drainfield in accordance with department rules; an aerobic 524 treatment unit and drainfield in accordance with department 525 rules; a system that is capable of reducing effluent nitrate by 526 at least 50 percent in accordance with department rules; or a 527 system other than a system using alternative drainfield 528 materials in accordance with department rules. The United States 529 Department of Agriculture Soil Conservation Service soil maps, 530 State of Florida Water Management District data, and Federal 531 Emergency Management Agency Flood Insurance maps are resources 532 that shall be used to identify flood-prone areas. 533 2. The use of fill or mounding to elevate a drainfield 534 system out of the 10-year floodplain of rivers, streams, or 535 other bodies of flowing water may not be permitted if such a 536 system lies within a regulatory floodway of the Suwannee and 537 Aucilla Rivers. In cases where the 10-year flood elevation does 538 not coincide with the boundaries of the regulatory floodway, the 539 regulatory floodway will be considered for the purposes of this 540 subsection to extend at a minimum to the 10-year flood 541 elevation. 542 (t)1. The owner of an aerobic treatment unit system shall 543 maintain a current maintenance service agreement with an aerobic 544 treatment unit maintenance entity permitted by the department. 545 The maintenance entity shall inspect each aerobic treatment unit 546 system at least twice each year and shall report quarterly to 547 the department on the number of aerobic treatment unit systems 548 inspected and serviced. The reports may be submitted 549 electronically. 550 2. The property owner of an owner-occupied, single-family 551 residence may be approved and permitted by the department as a 552 maintenance entity for his or her own aerobic treatment unit 553 system upon written certification from the system manufacturer’s 554 approved representative that the property owner has received 555 training on the proper installation and service of the system. 556 The maintenance entity service agreement must conspicuously 557 disclose that the property owner has the right to maintain his 558 or her own system and is exempt from contractor registration 559 requirements for performing construction, maintenance, or 560 repairs on the system but is subject to all permitting 561 requirements. 562 3. A septic tank contractor licensed under part III of 563 chapter 489, if approved by the manufacturer, may not be denied 564 access by the manufacturer to aerobic treatment unit system 565 training or spare parts for maintenance entities. After the 566 original warranty period, component parts for an aerobic 567 treatment unit system may be replaced with parts that meet 568 manufacturer’s specifications but are manufactured by others. 569 The maintenance entity shall maintain documentation of the 570 substitute part’s equivalency for 2 years and shall provide such 571 documentation to the department upon request. 572 4. The owner of an aerobic treatment unit system shall 573 obtain a system operating permit from the department and allow 574 the department to inspect during reasonable hours each aerobic 575 treatment unit system at least annually, and such inspection may 576 include collection and analysis of system-effluent samples for 577 performance criteria established by rule of the department. 578 (u) The department may require the submission of detailed 579 system construction plans that are prepared by a professional 580 engineer registered in this state. The department shall 581 establish by rule criteria for determining when such a 582 submission is required. 583 (v) Any permit issued and approved by the department for 584 the installation, modification, or repair of an onsite sewage 585 treatment and disposal system shall transfer with the title to 586 the property in a real estate transaction. A title may not be 587 encumbered at the time of transfer by new permit requirements by 588 a governmental entity for an onsite sewage treatment and 589 disposal system which differ from the permitting requirements in 590 effect at the time the system was permitted, modified, or 591 repaired. An inspection of a system may not be mandated by a 592 governmental entity at the point of sale in a real estate 593 transaction. This paragraph does not affect a septic tank phase 594 out deferral program implemented by a consolidated government as 595 defined in s. 9, Art. VIII of the State Constitution of 1885. 596 (w) A governmental entity, including a municipality, 597 county, or statutorily created commission, may not require an 598 engineer-designed performance-based treatment system, excluding 599 a passive engineer-designed performance-based treatment system, 600 before the completion of the Florida Onsite Sewage Nitrogen 601 Reduction Strategies Project. This paragraph does not apply to a 602 governmental entity, including a municipality, county, or 603 statutorily created commission, which adopted a local law, 604 ordinance, or regulation on or before January 31, 2012. 605 Notwithstanding this paragraph, an engineer-designed 606 performance-based treatment system may be used to meet the 607 requirements of the variance review and advisory committee 608 recommendations. 609 (x)1. An onsite sewage treatment and disposal system is not 610 considered abandoned if the system is disconnected from a 611 structure that was made unusable or destroyed following a 612 disaster and if the system was properly functioning at the time 613 of disconnection and was not adversely affected by the disaster. 614 The onsite sewage treatment and disposal system may be 615 reconnected to a rebuilt structure if: 616 a. The reconnection of the system is to the same type of 617 structure which contains the same number of bedrooms or fewer, 618 if the square footage of the structure is less than or equal to 619 110 percent of the original square footage of the structure that 620 existed before the disaster; 621 b. The system is not a sanitary nuisance; and 622 c. The system has not been altered without prior 623 authorization. 624 2. An onsite sewage treatment and disposal system that 625 serves a property that is foreclosed upon is not considered 626 abandoned. 627 (y) If an onsite sewage treatment and disposal system 628 permittee receives, relies upon, and undertakes construction of 629 a system based upon a validly issued construction permit under 630 rules applicable at the time of construction but a change to a 631 rule occurs within 5 years after the approval of the system for 632 construction but before the final approval of the system, the 633 rules applicable and in effect at the time of construction 634 approval apply at the time of final approval if fundamental site 635 conditions have not changed between the time of construction 636 approval and final approval. 637 (z) An existing-system inspection or evaluation and 638 assessment, or a modification, replacement, or upgrade of an 639 onsite sewage treatment and disposal system is not required for 640 a remodeling addition or modification to a single-family home if 641 a bedroom is not added. However, a remodeling addition or 642 modification to a single-family home may not cover any part of 643 the existing system or encroach upon a required setback or the 644 unobstructed area. To determine if a setback or the unobstructed 645 area is impacted, the local health department shall review and 646 verify a floor plan and site plan of the proposed remodeling 647 addition or modification to the home submitted by a remodeler 648 which shows the location of the system, including the distance 649 of the remodeling addition or modification to the home from the 650 onsite sewage treatment and disposal system. The local health 651 department may visit the site or otherwise determine the best 652 means of verifying the information submitted. A verification of 653 the location of a system is not an inspection or evaluation and 654 assessment of the system. The review and verification must be 655 completed within 7 business days after receipt by the local 656 health department of a floor plan and site plan. If the review 657 and verification is not completed within such time, the 658 remodeling addition or modification to the single-family home, 659 for the purposes of this paragraph, is approved. 660 Section 2. This act shall take effect July 1, 2025.