Septic Rules by State
Septic regulations aren't national — they're state, and often county. Pick your state to see who issues permits, whether a sale triggers an inspection, whether an aerobic system needs a maintenance contract, the key setback distances, and notable bans. Twelve states so far; more added over time.
Every state in this tool, in plain text
The same verified state data the picker above runs on, written out in full below — who permits, what a sale triggers, maintenance-contract rules, setbacks, and bans for each covered state.
Florida
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
Florida Dept. of Environmental Protection (DEP) holds program authority — transferred from the Dept. of Health effective 7/1/2021 under the Clean Waterways Act. Day-to-day permits are still handled by county health departments in most of the state while DEP phases in direct permitting (16 northwest counties since 1/2/2025, Marion County since 7/1/2025, remainder through 12/2026). Rules are being recodified from 64E-6 to 62-6, F.A.C. HB 589 (Ch. 2026-62, signed 5/6/2026): a municipality or county may not require the DEP OSTDS construction permit as a condition of issuing a building or plumbing permit for a single-family residence, so long as the owner/builder shows proof the OSTDS permit application was submitted; new DEP OSTDS rules do not apply to permit applications submitted within 90 days after adoption (effective 7/1/2026).
Inspection at sale — No
Florida statute expressly forbids mandating a septic inspection at the point of sale (381.0065(4)(v), F.S.) — the OSTDS permit transfers with the title instead. Buyers commonly order voluntary inspections during due diligence.
Aerobic-system maintenance contract — It depends
No blanket contract requirement: an owner-occupant of a single-family home may be permitted as the maintenance entity for their own ATU after manufacturer-approved training (381.0065(4)(t)2). Whoever services the ATU must inspect it at least twice a year and report quarterly, and ATUs need a biennial operating permit. ATU + drip-irrigation systems must have a maintenance contract with an approved entity (62-6.009).
Key setback distances
| Septic tank to well | 75 ft (private potable well or multifamily well) |
| Drainfield to well | 75 ft (private well); 100 ft to public wells serving up to 2,000 gpd; 200 ft to public wells serving over 2,000 gpd; 50 ft to nonpotable wells |
| System to property line | 5 ft (also 5 ft from building foundations) |
| System to surface water | 75 ft from surface-water body boundaries; 15 ft from swales, retention/detention areas, or normally dry drainage ditches |
Notable bans & restrictions
In Outstanding Florida Spring priority focus areas (373.811): no new OSTDS where public or investor-owned sewer is available; on lots of 1 acre or less without sewer, only enhanced nutrient-reducing (ENR) systems achieving at least 65% nitrogen reduction. HB 1379 (2023) extended ENR rules to all BMAP, Reasonable Assurance Plan, and Pollution Reduction Plan areas for new systems on 1-acre-or-less lots (effective 7/1/2023), and to all lot sizes in the Indian River Lagoon program (from 1/1/2024; connect or upgrade by 7/1/2030). Septage land application banned since 1/1/2016. Owners must connect to available sewer within one year of written notice. No Florida-specific cesspool ban verified — not claimed.
Georgia
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
The County Health Department with jurisdiction issues the OSSMS (on-site sewage management system) installation permit, under GA Dept. of Public Health Rules Ch. 511-3-1. The County Board of Health can grant variances for malfunctioning existing systems.
Inspection at sale — No
No statewide law requires a septic inspection before sale — the rules provide only for voluntary 'existing system evaluations' (511-3-1-.17(4)). Lenders (FHA/VA/USDA) very often require one as a mortgage condition, and buyers routinely include one in the due-diligence period.
Aerobic-system maintenance contract — Yes
Advanced treatment systems: a 3-year initial service policy from the manufacturer or authorized representative (cost included in the purchase price, at least one service visit per year), then an extended service policy — the GA DPH Onsite Sewage Manual (Section D) states maintenance and periodic reporting must continue for the life of the system. Annual operating-permit renewals require a current service agreement.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 100 ft |
| System to property line | 10 ft (tank); 5 ft (absorption field on public-water lots); 50 ft (absorption field on individual-well lots — conditional; pre-planned developments excepted) |
| System to surface water | 25 ft (tank) / 50 ft (absorption field) from lakes, ponds, streams, and watercourses; 15 ft from drainage ditches |
Notable bans & restrictions
511-3-1-.17(3): no strong bases, acids, or organic solvents may be used in operating a system — septic 'miracle' additives and chemical treatments are prohibited (the DPH manual says commercial septic-tank cleaners 'serve no useful purpose'). 511-3-1-.17(1) prohibits any unapproved discharge or seepage of effluent to ground surface, ditches, wells, lakes/streams, or groundwater. No specific statewide cesspool ban found — not claimed.
Massachusetts
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
Local Board of Health (each city/town) issues the Disposal System Construction Permit and the final Certificate of Compliance. MassDEP writes and enforces Title 5 (310 CMR 15.000).
Inspection at sale — Yes
Title 5 requires the system to be inspected within 2 years before sale or transfer of title (3 years if pumping records show annual pumping; up to 6 months after transfer if weather prevented it, with written buyer notice). Exceptions: transfers between spouses, parent and child, or full siblings; qualifying trusts; mortgage refinances; a Certificate of Compliance issued within the prior 2 years; a DEP-approved comprehensive inspection plan; or an enforceable agreement to upgrade or connect to sewer within 2 years.
Aerobic-system maintenance contract — Yes
310 CMR 15.287(9): owners of alternative/innovative (I/A) systems must maintain an operation-and-maintenance contract with a Massachusetts certified operator, with periodic inspections at least annually (some towns require field tests twice per year).
Key setback distances
| Septic tank to well | 50 ft (private well) |
| Drainfield to well | 100 ft (private well) |
| System to property line | 10 ft (tank and soil absorption system) |
| System to surface water | 25 ft (tank) / 50 ft (soil absorption system) from surface waters, wetlands, salt marshes, and banks; 50 ft tank / 100 ft soil absorption system to certified vernal pools |
Notable bans & restrictions
No outright statewide cesspool ban — new construction must meet full Title 5 standards (cesspools are classified as nonconforming systems); existing cesspools must be upgraded on inspection failure, proximity to water supplies, a health or environmental threat, or any increase in design flow. Nitrogen Sensitive Areas (2023 revision, effective 7/7/2023): new construction in designated Cape Cod watersheds must use Best Available Nitrogen Reducing Technology (about 19 mg/L nitrogen); existing systems must upgrade over roughly a 5-year window (7/2025–7/2030) unless the town files for a 20-year watershed permit.
Minnesota
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
County (local government) — issues the construction permit, inspects the installation, and issues the certificate of compliance. The Minnesota Pollution Control Agency (MPCA) sets the statewide standards only (Minn. Stat. 115.55; MN Rules ch. 7080–7083); it does not permit or inspect residential systems.
Inspection at sale — It depends
State law does NOT require a compliance inspection at sale (the old state mandate was repealed effective 8/1/2023) — it requires the seller to disclose in writing how sewage is managed, attach a map, state the known compliance status, and attach any prior inspection report in their possession. But many counties, cities, and townships — especially in shoreland areas — DO require a compliance inspection at transfer by local ordinance, and lenders sometimes require one.
Aerobic-system maintenance contract — Yes
Aerobic units are Type IV 'performance' systems under MN Rules 7080 and require an operating permit; the permit requires the owner to name and retain an MPCA-licensed Service Provider with a signed service-provider contract attached. Conventional tank-and-drainfield systems do not have this requirement.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 50 ft (300 ft applies only to systems of 10,000 gpd or more) |
| System to property line | 10 ft (tank and dispersal area) |
| System to surface water | 50–150 ft from the ordinary high-water mark, varying by waterbody class under DNR shoreland rules (General Development lakes 50 ft; Recreational Development 75 ft; Natural Environment 150 ft; remote rivers 150 ft; forested/transition rivers 100 ft; urban/tributary rivers 75 ft) |
Notable bans & restrictions
Straight-pipe systems are illegal — Minn. Stat. 115.55 Subd. 11 requires replacement or discontinuance within 10 months of a noncompliance notice, with a $500/month administrative penalty thereafter. Cesspools, seepage pits, drywells, and leaching pits are legally 'failing' and must be upgraded, replaced, or discontinued. No septic-additive ban found — not claimed.
New York
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Permits here are issued locally, not by the state — your county health department (or local agency) is the starting point. The EPA guide below covers the homeowner basics.
Start here: official resources
Who issues permits
County health departments issue written construction permits and inspect installations. NYSDOH sets the minimum design standards (10 NYCRR Appendix 75-A for individual systems under 1,000 gpd); NYSDEC handles SPDES permits for larger systems. Counties may adopt stricter rules.
Inspection at sale — No
No state law requires a septic inspection at sale — the seller-disclosure law covers the system's known condition only. But individual counties or towns can impose their own pre-sale inspection rules (e.g., Canandaigua), so it varies locally.
Aerobic-system maintenance contract — It depends
No statewide mandate found in Appendix 75-A or NYSDOH materials. County rules vary: Suffolk County requires annual professional maintenance for innovative/alternative OWTS, overseen by the Suffolk County Department of Health Services.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 100 ft (200 ft if the system is upgradient in the direct drainage path to the well; add 50% where aquifer water enters the well less than 50 ft below grade) |
| System to property line | 10 ft (tank, distribution box, absorption field, seepage pit, and raised/mound systems) |
| System to surface water | 50 ft (tank) / 100 ft (absorption field) to stream, lake, watercourse, or wetland (measured to mean high water mark) |
Notable bans & restrictions
No statewide cesspool ban verified — not claimed. County-level: Suffolk County banned cesspools in new construction in 1973; since 7/1/2019 a failed or replaced cesspool may not be replaced with a new cesspool and replacements must meet modern standards and be registered; since about 7/2021, new construction and major reconstruction in unsewered areas must install nitrogen-reducing innovative/alternative systems (targeting 19 mg/L nitrogen or less).
North Carolina
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
County (or district) health departments — Environmental Health sections — issue all permits: Improvement Permit, Construction Authorization, and Operation Permit. Rules are set by the Commission for Public Health (15A NCAC 18A .1900), with oversight and technical support from the NC DHHS Division of Public Health, Environmental Health Section, Onsite Water Protection Branch.
Inspection at sale — No
No state statute requires a septic inspection at sale — but inspections are near-universal in practice because most mortgage lenders require one. Sellers must disclose known septic problems (G.S. Chapter 47E), and the home's bedroom count must match the septic permit rating.
Aerobic-system maintenance contract — Yes
Aerobic units are Type V(c) systems (15A NCAC 18A .1961): a contract with a management entity must be signed before the Operation Permit is issued and stays in effect as long as the system is used — a permit condition that binds subsequent owners. A certified wastewater-treatment-facility operator must operate and maintain the system (G.S. 130A-342(b)).
Key setback distances
| Septic tank to well | 100 ft |
| Drainfield to well | 100 ft (may be reduced to a 50 ft minimum for repairs or space limitations) |
| System to property line | 10 ft |
| System to surface water | 50 ft from streams, canals, marshes, lakes, and ponds; 100 ft from WS-I streams, S.A. waters, and Class I/II reservoirs |
Notable bans & restrictions
None found in the surveyed statewide rules.
Ohio
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
Local board of health (city or general health district) issues installation and operation permits. The Ohio Dept. of Health sets the statewide rules (OAC 3701-29) and runs the Sewage Treatment Systems program; Ohio EPA handles NPDES discharge permits for off-lot discharging systems.
Inspection at sale — No
No statewide law requires a septic inspection at sale. But mortgage lenders (FHA/VA/USDA) frequently require one, some municipalities have their own ordinances (e.g., Broadview Heights Codified Ordinances 1048.01), and local health districts may adopt stricter rules than the state code.
Aerobic-system maintenance contract — Yes
Operation permits must require a service contract for systems under an NPDES permit or with approved aerobic components (OAC 3701-29-09(I)(2)(c)) — local health districts apply this broadly to aeration/ATU systems. The contract is with a manufacturer-registered service provider for the life of the system, and operation permits are renewed at least every 10 years.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 50 ft |
| System to property line | 10 ft (all components, including property line and right-of-way boundary) |
| System to surface water | 50 ft (soil absorption component to surface-water impoundment, lake, river, wetland, perennial stream, or cut banks; no separate tank-specific distance in the rule) |
Notable bans & restrictions
No new off-lot discharging systems since 1/1/2007 without an Ohio EPA NPDES permit (OAC 3701-29-06(E)(4), ORC 3718.023(B)). No discharge to abandoned wells, drainage wells, dry wells, cesspools, or sinkholes. Systems may not receive roof, foundation, clear-water sump, or swimming-pool water.
Pennsylvania
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Permits here are issued locally, not by the state — your county health department (or local agency) is the starting point. The EPA guide below covers the homeowner basics.
Start here: official resources
Who issues permits
Certified Sewage Enforcement Officers (SEOs) working for local agencies (townships, boroughs, or counties) issue on-lot septic permits under the PA Sewage Facilities Act (Act 537). PA DEP trains and certifies SEOs and oversees the program.
Inspection at sale — It depends
No statewide law requires a septic inspection at sale — but many individual townships and boroughs (especially in southeastern PA) have their own point-of-sale inspection ordinances, so it depends on the municipality. Sellers must disclose known sewage conditions.
Aerobic-system maintenance contract — It depends
No statewide statute requiring every aerobic-unit owner to hold a private service contract. Instead, municipalities must assure long-term operation and maintenance of alternate/advanced systems for the life of the system through Chapter 71 Subchapter E sewage-management programs — a maintenance agreement is one mechanism. Spray-irrigation systems have specific ongoing O&M inspection standards (25 Pa. Code 73.167).
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 100 ft |
| System to property line | 10 ft (tank and absorption area) |
| System to surface water | 25 ft (tank) / 50 ft (absorption area) from streams, lakes, water courses, and ponds |
Notable bans & restrictions
New cesspools are not permitted in new installations (existing ones grandfathered). Holding tanks are allowed only short-term during construction or repair of failed systems. No PA ban on septic additives found.
Tennessee
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
Tennessee Dept. of Environment and Conservation (TDEC), Division of Groundwater Protection (T.C.A. 68-221-401 et seq.); homeowners apply online. A few contract counties run the program locally (e.g., Knox County Health Department's Groundwater Protection Division).
Inspection at sale — No
No state-mandated septic inspection at sale. Sellers must complete the TN Residential Property Condition Disclosure noting known septic conditions (T.C.A. 66-5-202), but the form's instructions state sellers are not required to get an inspection to complete it. Note: sellers of newly built homes on septic may not advertise more bedrooms than the permit allows (T.C.A. 47-18-104(b)).
Aerobic-system maintenance contract — Yes
Rule 0400-48-01-.10: for an Advanced Treatment System (aerobic/secondary), the owner at installation AND every subsequent owner, for the life of the system, must hold an operation-and-maintenance contract with a TDEC-approved maintenance provider; the manufacturer must bundle a 4-year O&M contract into the installed price; a deed restriction must be recorded before a permit is issued; failure to maintain the contract is a Class C misdemeanor with per-day civil penalties.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 50 ft |
| System to property line | 10 ft (tanks and disposal field) |
| System to surface water | 15 ft (tanks) / 25 ft (disposal field) from gullies, ravines, dry stream beds, natural drainageways, sinkholes, streams, and cut banks |
Notable bans & restrictions
Straight pipes and illegal discharge banned by statute: T.C.A. 68-221-406 makes it unlawful to dispose of sewage or effluent into wells, caves, sinkholes, ditches, streams, or the ground surface. No verified statewide cesspool ban — not claimed; no verified septic-additive ban — not claimed.
Texas
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Start here: official resources
Who issues permits
Texas Commission on Environmental Quality (TCEQ) writes the statewide rules (30 TAC Chapter 285); permits are issued locally by TCEQ 'authorized agents' — typically the county, city, or river authority. Where no authorized agent exists, TCEQ's regional office permits directly.
Inspection at sale — No
No statewide inspection requirement at sale — the OSSF permit transfers with the title, and for aerobic systems the buyer inherits the service-policy terms (30 TAC 285.7(d)(4)(A)). Individual counties may add their own requirements.
Aerobic-system maintenance contract — Yes
30 TAC 285.7 (effective 7/6/2023): an initial two-year service policy with a TCEQ-licensed maintenance provider is required for aerobic treatment units, filed with the permitting authority before the system is approved for use. After two years, single-family homeowners may self-maintain or renew the contract; commercial, speculative-residential, and multifamily properties must keep a contract. If the home sells mid-policy, the terms carry to the buyer.
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 100 ft (50 ft if the well is pressure-cemented/grouted to 100 ft or to the water table; 150 ft to public water wells) |
| System to property line | 5 ft (tanks and drainfields; spray-application systems 10–20 ft) |
| System to surface water | 75 ft drainfield / 50 ft tank from streams, ponds, lakes, rivers, and creeks (measured from normal pool elevation) |
Notable bans & restrictions
Cesspools, boreholes, and seepage pits are prohibited for installation or use (30 TAC 285.3(i)); existing ones under 5,000 gpd must be closed. Systems treating over 5,000 gpd or discharging to waters of the state need a separate TCEQ discharge permit. No septic-additive ban found in Texas rule.
Virginia
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Permits here are issued locally, not by the state — your county health department (or local agency) is the starting point. The EPA guide below covers the homeowner basics.
Start here: official resources
Who issues permits
Virginia Dept. of Health (VDH) — permits are issued through the local/district health department's environmental health office. Note: since 2019, most applicants must bring supporting work from a DPOR-licensed private-sector Onsite Soil Evaluator or PE; VDH evaluates directly only for qualifying hardship or means-tested cases.
Inspection at sale — No
Virginia does not require a septic inspection to sell a home — but under HB2671 (effective 7/1/2025), if an inspection IS requested by a buyer, seller, lender, or agent as a sale condition, it must meet state minimums: a DPOR-licensed inspector, a written scope-of-work contract, the tank pumped as part of a complete inspection, and a written condition-evaluation report (not pass/fail) within 10 business days.
Aerobic-system maintenance contract — Yes
Owners of alternative onsite sewage systems (AOSS, including aerobic treatment units) must have the system operated and maintained by a licensed operator — VDH says this generally involves a service contract, with operator visits at least annually (frequency set in the operating permit), plus required sampling and a log kept on the property. Letting a required O&M contract lapse is a civil-penalty violation (12VAC5-650).
Key setback distances
| Septic tank to well | 50 ft |
| Drainfield to well | 100 ft (commonly applied; 12VAC5-610 Table 4.2 technically sets 50 ft for Class IIIA/IIIB wells and 100 ft for Class IIIC/IV wells — confirm with the local health department) |
| System to property line | 5 ft (absorption area per 12VAC5-610 Table 4.2; tank-side distance not independently verified — check with the local health department) |
| System to surface water | 50 ft (drainfield to streams, natural lakes, and impounded waters); 70 ft to shellfish waters (tank-side distance not independently verified) |
Notable bans & restrictions
Straight-pipe discharge effectively banned: 12VAC5-610-80 prohibits discharging untreated sewage onto land or into Commonwealth waters without a permit ($100/$150 civil penalties per violation under 12VAC5-650). Pit privies are effectively barred at new homes under the building code. In Chesapeake Bay Preservation Areas, systems must be pumped at least once every 5 years (or have an approved effluent filter, or a licensed-operator inspection every 5 years) — 9VAC25-830-130. No verified statewide cesspool ban — not claimed; no verified septic-additive ban — not claimed.
Wisconsin
Statewide rules as published by state agencies — verified September 2026. Counties and towns may set stricter requirements.
Permits here are issued locally, not by the state — your county health department (or local agency) is the starting point. The EPA guide below covers the homeowner basics.
Start here: official resources
Who issues permits
County — no POWTS may be installed without a valid sanitary permit (Wis. Stat. 145.19(1g)) issued by the governmental unit responsible for private sewage regulation, in practice the county. The WI Dept. of Safety and Professional Services (DSPS) writes the statewide code (SPS 381–387).
Inspection at sale — No
No state requirement — and Wis. Stat. 66.0104 (2015 Act 176) affirmatively prohibits local governments from requiring inspections, repairs, or fees as a condition of selling, transferring, or refinancing property. Old pre-2016 county time-of-sale ordinances cannot be enforced.
Aerobic-system maintenance contract — Yes
SPS 383.54: the owner must maintain a maintenance or service contract with a registered POWTS maintainer as long as the system is used whenever the approved management plan calls for evaluation, monitoring, or servicing at intervals of 12 months or less — aerobic units always carry such plans, so ATU owners must keep an active contract. Skipping it makes the system a human-health hazard under the code.
Key setback distances
| Septic tank to well | 25 ft |
| Drainfield to well | 50 ft |
| System to property line | 2 ft (tank) / 5 ft (dispersal component) |
| System to surface water | 10 ft (tank) / 50 ft (dispersal component) to the ordinary high-water mark of navigable waters |
Notable bans & restrictions
Cesspools are prohibited as a POWTS, including any existing before 7/1/2000 (SPS 383.32(1)(d)). Final discharge of wastewater or effluent to open bodies of water is prohibited (383.32(1)(e)), and to the ground surface is prohibited (383.32(1)(f)) — including via outfall pipes installed before 7/1/2000.
Before you act on this
Septic rules vary by state — and often by county or town, which can set stricter requirements than the state minimums shown here. This tool summarizes statewide rules as published by state agencies in September 2026; rules change, and local health departments are the final authority. Always confirm with your local permitting authority before buying, building, or modifying a system.
State not listed yet? The rules above still show you which questions to ask your county health department: who permits, what a sale triggers, whether your system type needs a service contract, and the setback distances that apply to your lot.