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State aerobic septic mandate lookup

Does your state require an aerobic maintenance contract, a set inspection schedule and reports to a regulator? A 50-state summary with the rule or agency source for each row. Texas and North Carolina are checked against the rule text; other states were last reviewed Sep 26, 2026, so verify locally.

50 STATES
STATEWIDE MANDATE
14
PARTIAL OR LOCAL
19
NONE FOUND
17

50 states; District of Columbia not covered.

Alabama

No recurring statewide provider mandate found
Contract
None found
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Alaska

No recurring statewide provider mandate found
Contract
Agreement at approval to operate only
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Arizona

No recurring statewide provider mandate found
Contract
No; generic owner O&M duties
Inspection frequency
Transfer inspection within 6 months before sale (R18-9-A316)
Reports go to
Buyer files Notice of Transfer within 15 days
Filing
Annual report only for 3,000-24,000 gpd systems
Source Last reviewed Sep 26, 2026 · verify locally

Arkansas

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Service contract (1993 manual; current status unclear); 2024 Monitoring Program (§12)
Inspection frequency
Unknown
Reports go to
ADH (unconfirmed)
Filing
Mail-based certified monitoring paperwork
Source Last reviewed Sep 26, 2026 · verify locally

California

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
None statewide; county LAMP-dependent
Inspection frequency
Sonoma: 2x/yr self-monitoring
Reports go to
County (e.g., Permit Sonoma)
Filing
Pre-filled forms; provider may file for owner; annual permit renewal
Source Last reviewed Sep 26, 2026 · verify locally

Colorado

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Yes, active contract at all times (higher-level treatment); copy within 30 days of renewal
Inspection frequency
2 at 6-month intervals in year 1, then annual
Reports go to
Local public health agency
Filing
County-specific (Jefferson County: findings to health dept., 7-day termination notice); some counties have no program
Source Last reviewed Sep 26, 2026 · verify locally

Connecticut

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Via DEEP individual permits; DPH advanced-system rules in draft
Inspection frequency
Draft: annual or semiannual
Reports go to
DEEP (permit conditions)
Filing
None found
Source Last reviewed Sep 26, 2026 · verify locally

Delaware

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Not confirmed; contract satisfies transfer inspection
Inspection frequency
At property transfer
Reports go to
DNREC
Filing
Class H form within 72 hours
Source Last reviewed Sep 26, 2026 · verify locally

Florida

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, life of system (2-yr initial, then ≥1-yr renewals); certified homeowner option
Inspection frequency
2x/yr residential; 4x/yr commercial
Reports go to
County DOH offices acting for DEP
Filing
List of units serviced due by the 15th of the month after each semiannual period; format set by county; biennial DEP operating permit
Source Last reviewed Sep 26, 2026 · verify locally

Georgia

No recurring statewide provider mandate found
Contract
No (owner responsible; a Certified Maintenance Contractor license exists)
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Hawaii

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Yes, active contract with certified operator
Inspection frequency
Every 6 months
Reports go to
DOH (annual contract copies)
Filing
Unknown
Source Last reviewed Sep 26, 2026 · verify locally

Idaho

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Certified service provider required; no homeowner self-maintenance for ETPS
Inspection frequency
At least 1 O&M event/yr plus effluent test
Reports go to
7 public health districts
Filing
Annual report due July 31
Source Last reviewed Sep 26, 2026 · verify locally

Illinois

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
2-yr initial service policy only
Inspection frequency
4 visits over 2 yrs
Reports go to
None required
Filing
None
Source Last reviewed Sep 26, 2026 · verify locally

Indiana

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Operating permits at local discretion; life of system near public waters
Inspection frequency
Permit renewal ≤3 yrs; per O&M document
Reports go to
Local health department
Filing
Owner submits documentation within 1 month
Source Last reviewed Sep 26, 2026 · verify locally

Iowa

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Yes, life of system, manufacturer-certified technician
Inspection frequency
2x/yr at 6-month intervals
Reports go to
None by state rule; some counties want a contract copy (e.g., Story)
Filing
None
Source Last reviewed Sep 26, 2026 · verify locally

Kansas

No recurring statewide provider mandate found
Contract
State none; county codes unverified
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Kentucky

No recurring statewide provider mandate found
Contract
Holding tanks only
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Louisiana

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
2-yr manufacturer policy; perpetual maintenance via extended contract or certified homeowner
Inspection frequency
Every 6 months in yrs 1-2
Reports go to
LDH state health officer (warranty visits); parishes
Filing
After each warranty visit; format unknown; some parish programs (St. Tammany, Calcasieu)
Source Last reviewed Sep 26, 2026 · verify locally

Maine

No recurring statewide provider mandate found
Contract
No (NSF 40 listing only)
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Maryland

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, life of system after 5-yr manufacturer O&M; trained owner may self-maintain
Inspection frequency
Annual
Reports go to
MDE; some counties too (e.g., Talbot)
Filing
MDE BAT database, within 30 days (2013 guidance)
Source Last reviewed Sep 26, 2026 · verify locally

Massachusetts

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, life of system, MA-certified wastewater operator (I/A systems)
Inspection frequency
Per MassDEP approval: annual (General Use), 2x/yr (Remedial), quarterly (Provisional)
Reports go to
Local Board of Health; Barnstable County on Cape Cod
Filing
Barnstable County online database (14 towns); MassDEP I/A form elsewhere
Source Last reviewed Sep 26, 2026 · verify locally

Michigan

No recurring statewide provider mandate found
Contract
No statewide code; 45 local health departments
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Minnesota

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Management plan for all new systems; operating permits for advanced classes; MPCA-licensed business
Inspection frequency
Set in operating permit
Reports go to
185 local units of government
Filing
Per permit; county online system in some counties (e.g., Aitkin)
Source Last reviewed Sep 26, 2026 · verify locally

Mississippi

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
≥2 yrs installer maintenance, then perpetual contract or Qualified Homeowner
Inspection frequency
Unconfirmed
Reports go to
None found (affidavit, audit-based)
Filing
None
Source Last reviewed Sep 26, 2026 · verify locally

Missouri

No recurring statewide provider mandate found
Contract
No; annual inspection only recommended
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Montana

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
County-driven (Flathead: perpetual contract by deed restriction)
Inspection frequency
Flathead: 2x/yr for 2 yrs, then annual
Reports go to
County, on request only
Filing
None
Source Last reviewed Sep 26, 2026 · verify locally

Nebraska

No recurring statewide provider mandate found
Contract
No
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Nevada

No recurring statewide provider mandate found
Contract
Clark County operating permits; 2025 overhaul postponed
Inspection frequency
Nitrogen-removal systems: annual inspection/fee
Reports go to
SNHD
Filing
Not found
Source Last reviewed Sep 26, 2026 · verify locally

New Hampshire

No recurring statewide provider mandate found
Contract
One-time contract at approval if the manufacturer requires it
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

New Jersey

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, life of system, ≥1-yr terms; no self-maintenance
Inspection frequency
Within 30 days of startup; 2x/yr for 2 yrs; annual after; at transfer
Reports go to
County/municipal health administrative authority
Filing
Signed form within 30 days; electronic at the authority's discretion; 30-day lapse notice
Source Last reviewed Sep 26, 2026 · verify locally

New Mexico

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Yes, continuous NMED-approved contract with certified provider
Inspection frequency
Per manufacturer/permit
Reports go to
NMED (as requested); failed system within 5 working days
Filing
No portal; contract copies within 30 days; annual permit renewal
Source Last reviewed Sep 26, 2026 · verify locally

New York

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Suffolk County only: current O&M contract, licensed provider
Inspection frequency
Suffolk: annual
Reports go to
SCDHS (Suffolk)
Filing
SCDHS online database (mandatory since 7/2018)
Source Last reviewed Sep 26, 2026 · verify locally

North Carolina

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, for as long as the system is in use (15A NCAC 18E .1303(b)); Type IV, V and VI systems per Table XXXII; certified operator (.1304(a))
Inspection frequency
Table XXXII: e.g., 2/yr for LPP (Type IVa) and residential advanced pretreatment ≤1,500 gpd (quarterly in the first year for asterisked Type V rows), up to 12/yr for larger flows
Reports go to
Owner, local health department and manufacturer within 30 days of the inspection (.1304(c)); Department data system (.1304(g))
Filing
Local health department format (mail, fax or email; e.g., Wake County by email)
Source Checked against the rule text Oct 9, 2026 North Carolina in full

North Dakota

No recurring statewide provider mandate found
Contract
No
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Ohio

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, for systems installed/altered after 1/1/2015 and NPDES systems
Inspection frequency
Per operation permit/manufacturer; NPDES annual sampling
Reports go to
Local health districts
Filing
District-specific; records within 60 days (unverified); contract non-renewal notice
Source Last reviewed Sep 26, 2026 · verify locally

Oklahoma

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Installer maintains 2 yrs free; then owner solely responsible
Inspection frequency
Every 6 months in yrs 1-2
Reports go to
Owner only; Edmond requires annual verification to the city
Filing
None
Source Last reviewed Sep 26, 2026 · verify locally

Oregon

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, life of system for ATT, manufacturer-certified provider
Inspection frequency
4 visits in 2-yr initial term (Douglas County); annual certification
Reports go to
DEQ / county contract agents
Filing
Annual certification plus fee filed by provider by DEQ date; 30-day termination notice
Source Last reviewed Sep 26, 2026 · verify locally

Pennsylvania

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Only spray-irrigation systems (management entity); otherwise municipal
Inspection frequency
Aerobic tank every 6 months; annual lab test (spray systems)
Reports go to
Local agency/municipality
Filing
None found
Source Last reviewed Sep 26, 2026 · verify locally

Rhode Island

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Life-of-system O&M agreement when technology approval requires it
Inspection frequency
Town-dependent
Reports go to
Towns (7 mandate inspections)
Filing
Web tracking in 6 towns
Source Last reviewed Sep 26, 2026 · verify locally

South Carolina

No recurring statewide provider mandate found
Contract
No (owner responsible; large systems under R.61-9)
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

South Dakota

No recurring statewide provider mandate found
Contract
None identified (rule text not fully read)
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Tennessee

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, perpetual, runs with the land, TDEC-approved provider (after 4-yr manufacturer contract)
Inspection frequency
Every 3 months
Reports go to
TDEC
Filing
Annual contract review plus tracking fees; 30-day cancellation notice; per-visit filing unconfirmed
Source Last reviewed Sep 26, 2026 · verify locally

Texas

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Initial two-year service policy, then a renewed contract or single-family homeowner self-maintenance (30 TAC §285.7(c), (d)(4)); local orders may restrict self-maintenance
Inspection frequency
At least once every four months; tests may drop to two per year with qualifying electronic monitoring (30 TAC §285.91(4), §285.7(e)(3))
Reports go to
Permitting authority (county or other authorized agent) and the owner
Filing
Within 14 days after the test (30 TAC §285.7(e)(1)(B)); format set by the permitting authority
Source Checked against the rule text Oct 9, 2026 All 254 Texas counties

Utah

No recurring statewide provider mandate found
Contract
Optional local management entity; ≤5-yr operating permits inspected by LHD staff
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Vermont

Partial or local (warranty period only, some counties, some system types, or no filing step)
Contract
Manufacturer-authorized provider per technology approval
Inspection frequency
Per technology approval (e.g., 6 months for 2 yrs, then annual)
Reports go to
DEC, via manufacturer's annual report
Filing
Manufacturer files electronically by April 1
Source Last reviewed Sep 26, 2026 · verify locally

Virginia

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
DPOR-licensed operator required; no self-maintenance
Inspection frequency
Annual ≤1,000 gpd; quarterly to 10,000; monthly to 40,000
Reports go to
VDH
Filing
VDH MyHD web portal, by the 15th of the following month, per-report fee
Source Last reviewed Sep 26, 2026 · verify locally

Washington

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
At local health jurisdiction discretion; provider-performed inspection
Inspection frequency
Annual for all non-gravity systems
Reports go to
35 local health jurisdictions
Filing
LHJ-approved form; county online reporting systems in Pierce (30 days, late fees), Snohomish and Island
Source Last reviewed Sep 26, 2026 · verify locally

West Virginia

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Yes, perpetual, condition of NPDES coverage (discharging home aeration units)
Inspection frequency
Quarterly
Reports go to
WVDEP and owner
Filing
WVDEP Electronic Submission System referenced; deadline unconfirmed
Source Last reviewed Sep 26, 2026 · verify locally

Wisconsin

Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)
Contract
Not by state rule; all systems in county tracking programs
Inspection frequency
At least every 3 yrs; ATUs generally annual
Reports go to
County
Filing
Within 30 days; county format (online in some counties, paper elsewhere)
Source Last reviewed Sep 26, 2026 · verify locally

Wyoming

No recurring statewide provider mandate found
Contract
No
Inspection frequency
Not set statewide
Reports go to
No statewide filing step found
Filing
—
Source Last reviewed Sep 26, 2026 · verify locally

Computed from: 50-state review, Sep 26, 2026; 30 TAC §285.91(4); 15A NCAC 18E .1303(b)

Data refreshed Oct 9, 2026.

Summarizes public rules/records as of Oct 9, 2026; not legal advice; verify with your permitting authority.

What “statewide recurring mandate” means here

Three things together: a contract or a licensed provider is required, there is a set schedule, and a report goes to a regulator. A state with a warranty-period requirement only, or with rules that vary by county or by system type, is counted as partial — not as a mandate — because a provider planning a book of work needs to know which of those they are walking into.

yes: Statewide recurring mandate (contract or licensed provider, set schedule, report to a regulator)

partial: Partial or local (warranty period only, some counties, some system types, or no filing step)

no: No recurring statewide provider mandate found

Two rows are current; 48 are a review

Texas and North Carolina were read against the rule text, because those are the two states this product files in and the rules pages behind them are checked line by line. The other 48 come from a Sep 26, 2026 review and each says so on its own row. Treat them as a starting point for a local check, not as an answer.

That is also why there are no per-state pages yet. Forty-eight thin pages built on a review would read as the same kind of evidence as the Texas and North Carolina clusters, and they are not. They arrive when the rows do.

The two states this product files in

Texas: tested at least once every four months (30 TAC §285.91(4), Table IV), with the report to the permitting authority and the owner within 14 days of the test (§285.7(e)(1)(B)).

North Carolina: a certified operator under contract for as long as the system is in use (15A NCAC 18E .1303(b)), the Table XXXII cadence, and the report to the owner, the local health department and the manufacturer within 30 days (.1304(c)).

Common questions

Which states require an aerobic septic maintenance contract?

In our Sep 26, 2026 review, 14 states have a statewide recurring mandate (contract or licensed provider, a set schedule and reports to a regulator), 19 have a partial or local one, and 17 have none found. See the table for each state’s source.

How often must Texas aerobic systems be inspected?

Tested at least once every four months (30 TAC §285.91(4), Table IV), with reports to the permitting authority and owner within 14 days of the test (§285.7(e)(1)(B)).

How long must a North Carolina O&M contract last?

For as long as the system is in use (15A NCAC 18E .1303(b)).