Local License Index

Clerk file of septic licenses. No ads. No maps. No quotes.

How we verify

Each listing is a record we can point at. A maintainer opened a government page or PDF, quoted the name and (when printed) the license number from that page, and wrote the date. Directory sites, LILWA membership, Angi, and ads are not a license source.

If a roster does not print a number, the license field is the phrase that is true — for example “not printed on published town roster” — not a guessed ID.

Suffolk County, New York

Primary live lookup: Suffolk County Department of Labor, Licensing and Consumer Affairs Liquid Waste License search, ca.suffolkcountyny.gov/dcasearch. Accela Citizen Access Consumer Affairs module is cited as a second door to the same county records.

Supporting county artifact: Suffolk County Septic Improvement Program Approved List of SIP Installers, ranking PDF revised 11/06/2025. County FAQ states SIP vendors hold a Liquid Waste License. SCDHS Office of Wastewater Management will not inspect an install without a valid liquid waste license.

NYS DEC Part 364 numbers that appear only on a company site are labeled company-published, not DART-verified. The DART search is a JavaScript wall.

Nassau County, New York

Primary live lookup: Nassau County Department of Consumer Affairs Search Businesses With Valid Licenses (Home Improvement), apex5.nassaucountyny.gov/ords/f?p=288:500:::NO. The number on the page is a Home Improvement ID, not a Suffolk-style LW. Installers in the county I/A grant program must hold that license.

Supporting county artifact: Nassau County Soil & Water Conservation District S.E.P.T.I.C. participating designers/installers PDF updated 7/29/2024. That PDF prints name, street, and phone. It does not print the Home Improvement number. Program page: nassauswcd.org/SEPTIC (approximately 40,000 residential North Shore cesspool/septic properties). South and central Nassau is mostly sewered; this file does not pad with sewer-only towns.

Barnstable County, Massachusetts

MassDEP does not license septage pumpers. Town Boards of Health do. Primary pumping source for this seed: Town of Harwich Health Department Licensed Septic Haulers roster updated 01.30.2026 (Harwich CivicPlus asset). Town of Harwich Licensed Septic Installers (updated 10.02.2025) is used only to add install when the same firm is on that list. Town of Dennis 2023 hauler/installer PDFs are used for ZIP and city corroboration, not as the live license date.

Those town rosters print name, street or PO Box, and phone. They do not print a permit number. We do not invent one.

Plymouth County, Massachusetts

Same MassDEP rule as Barnstable. Quote from the consumer-protection guide (opened 2026-09-02): “To find a licensed septage pumper/hauler, contact your local Board of Health. MassDEP does not license or certify septic-system pumpers or recommend any company.”

Town lists opened this pass:

Plymouth and Kingston rosters print name, street or PO Box, phone, and (Kingston) ZIP. They do not print a permit number. Duxbury prints a permit number; that number is quoted only for firms on the Duxbury list. Streets outside Plymouth County, PO Box-only rows, Cape HQ firms already in Barnstable, and generic installer-only excavators are omitted. Brockton is not padded as sewer-only.

Gwinnett County, Georgia

Georgia Department of Public Health, Environmental Health Section, certified septic-tank company rosters dated 8/28/2026:

DPH FAQ: company certifications expire 2/28 of even years. The public list does not print certificate numbers. One Gwinnett firm publishes a number on its own site; that number is labeled company-published. Streets are not on the DPH PDF; they come from an opened company page or an FMCSA SAFER snapshot that matched the DPH name and phone. Royal Flush Plumbing — Snellville is on the installer PDF only, so pumping is not claimed.

Marion County, Florida

Primary live lookup: Florida DEP Operator Certification Individual Septic Certification Search (License Number field), prodapps.dep.state.fl.us/ocp/reports/accesspublic/OSP/Search_form. Result rows print name, type (Registered Septic SR / Master Septic SM), license number, status, and dates. They do not print street or phone.

Supporting exports from the same OCP database (Current List of Septic Certifications and Current List of Septic Business Authorizations): Public_license_data and B_public_license_data. Links page: septic-tank-contractor-registration-links. Program: floridadep.gov/water/onsite-sewage.

Phone, when present, is quoted from DEP Active Maintenance Entity Service Permits by County PDF run date 3/31/2024, and only when the same firm/street is on the live business-authorization export. Contractor registration is install/repair of OSTDS, not pumping.

Tank counts (both cited; neither treated as gospel): Florida DOH 2019 via Ocala Gazette — Marion 125,324 of 2.8 million statewide. Florida TaxWatch Oct 2023 ESTIMATED 100,000. Columbia FL is not seeded.

Polk County, Florida

Same DEP Operator Certification Individual Septic Certification Search as Marion (License Number field), prodapps.dep.state.fl.us/ocp/reports/accesspublic/OSP/Search_form. Result rows print name, type (Registered Septic SR / Master Septic SM), license number, status, and dates. They do not print street or phone.

Supporting exports from the same OCP database: Public_license_data and B_public_license_data. A Polk row is listed only when the business-authorization export prints Business County POLK and the ZIP is a Polk County ZIP. Hillsborough (Plant City), Orange, and Osceola streets are not padded. PO Box-only rows are omitted. Links page: septic-tank-contractor-registration-links. Program: floridadep.gov/water/onsite-sewage.

Phone, when present, is quoted from DEP Active Maintenance Entity Service Permits by County PDF run date 3/31/2024, and only when the same firm/street is on the live business-authorization export. Contractor registration is install/repair of OSTDS, not pumping.

Tank counts (both labeled ESTIMATED/approximate; neither treated as gospel): Florida TaxWatch Oct 2023 ESTIMATED 118,000 (Florida Daily recap of Septic-to-Sewer). LkldNow Oct 4, 2024 citing Florida Department of Health — approximate 160,000 Polk households on septic. Columbia FL is not seeded.

Miami-Dade County, Florida

Same DEP Operator Certification Individual Septic Certification Search as Marion and Polk (License Number field), prodapps.dep.state.fl.us/ocp/reports/accesspublic/OSP/Search_form. Result rows print name, type (Registered Septic SR / Master Septic SM), license number, status, and dates. They do not print street or phone.

Supporting exports from the same OCP database: Public_license_data and B_public_license_data. A Miami-Dade row is listed only when the business-authorization export prints Business County DADE, MIAMI-DADE, or MIAMI DADE and the business street is in Miami-Dade County. Most of the county is sewered; downtown / Brickell / Midtown / Doral office-suite rows are not padded. Broward (Miramar, Hollywood), Monroe (Key Largo), and Palm Beach streets are not padded even if DEP printed Business County DADE. PO Box-only rows are omitted. Links page: septic-tank-contractor-registration-links. Program: floridadep.gov/water/onsite-sewage.

Phone, when present, is quoted from DEP Active Maintenance Entity Service Permits by County PDF run date 3/31/2024, and only when the same firm/street is on the live business-authorization export. Contractor registration is install/repair of OSTDS, not pumping.

Tank count (labeled ESTIMATED; not treated as gospel): Florida TaxWatch Oct 2023 ESTIMATED 107,000 (Florida Daily recap of Septic-to-Sewer). Columbia FL is not seeded.

Lee County, Florida

Same DEP Operator Certification Individual Septic Certification Search as Marion, Polk, and Miami-Dade (License Number field), prodapps.dep.state.fl.us/ocp/reports/accesspublic/OSP/Search_form. Result rows print name, type (Registered Septic SR / Master Septic SM), license number, status, and dates. They do not print street or phone.

Supporting exports from the same OCP database: Public_license_data and B_public_license_data. A Lee row is listed only when the business-authorization export prints Business County LEE and the business street is in Lee County. Collier (Naples), Charlotte (Punta Gorda), and Hendry (Labelle / Clewiston) streets are not padded even if DEP printed Business County LEE. PO Box-only rows are omitted. Links page: septic-tank-contractor-registration-links. Program: floridadep.gov/water/onsite-sewage.

Phone, when present, is quoted from DEP Active Maintenance Entity Service Permits by County PDF run date 3/31/2024, and only when the same firm/street is on the live business-authorization export. Contractor registration is install/repair of OSTDS, not pumping.

Tank count (labeled ESTIMATED; not treated as gospel): Florida TaxWatch Oct 2023 ESTIMATED 97,000 (Florida Daily recap of Septic-to-Sewer). Columbia FL is not seeded.

What we reject

Machine-readable copy of the file: listings.json. Same method, shorter: methodology.