Private wells, state by state
Pick your state to see only what applies there: the state's private well program, how to find a state-certified lab and a licensed well driller, any home-sale testing or disclosure rule we've confirmed, and every county page and directory listing we've published for that state. Every fact links to an official source.
- ALAlabama
- AKAlaska
- AZArizona
- ARArkansas
- CACalifornia4
- COColorado
- CTConnecticut
- DEDelaware
- FLFlorida
- GAGeorgia
- HIHawaii
- IDIdaho
- ILIllinois
- INIndiana1
- IAIowa
- KSKansas
- KYKentucky
- LALouisiana
- MEMaine2
- MDMaryland
- MAMassachusetts
- MIMichigan3
- MNMinnesota1
- MSMississippi
- MOMissouri
- MTMontana
- NENebraska
- NVNevada
- NHNew Hampshire2
- NJNew Jersey1
- NMNew Mexico
- NYNew York1
- NCNorth Carolina1
- NDNorth Dakota
- OHOhio1
- OKOklahoma
- OROregon
- PAPennsylvania4
- RIRhode Island
- SCSouth Carolina
- SDSouth Dakota
- TNTennessee
- TXTexas
- UTUtah
- VTVermont
- VAVirginia
- WAWashington
- WVWest Virginia
- WIWisconsin1
- WYWyoming
The number on a state is how many county pages we've published there. Every state page has the official lookups even before its county pages exist.
All state pages
- AlabamaAlabama private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Alabama county and directory pages, with sources.
- AlaskaAlaska private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Alaska county and directory pages, with sources.
- ArizonaArizona private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Arizona county and directory pages, with sources.
- ArkansasArkansas private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Arkansas county and directory pages, with sources.
- CaliforniaCalifornia private well rules in one place: who permits wells, the State Water Board's testing advice, free domestic well testing programs, the AB 2454 rental rule, ELAP labs, C-57 drillers, well records, dry wells, SGMA and common contaminants, with sources.
- ColoradoColorado private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Colorado county and directory pages, with sources.
- ConnecticutConnecticut private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Connecticut county and directory pages, with sources.
- DelawareDelaware private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Delaware county and directory pages, with sources.
- FloridaFlorida has no well test requirement at sale. County health department testing, what to test, free sampling near contamination, NELAP-certified labs, well completion reports by water management district, and contacts, with sources.
- GeorgiaGeorgia's well water testing advice, UGA's home loan closing test, uranium and radon in the Piedmont, arsenic in the Coastal Plain, setback distances, certified labs and contacts, with sources.
- HawaiiHawaii private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Hawaii county and directory pages, with sources.
- IdahoIdaho private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Idaho county and directory pages, with sources.
- IllinoisIllinois private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Illinois county and directory pages, with sources.
- IndianaIndiana's seller disclosure for wells, glacial arsenic data, Indiana Department of Health lab fees, certified labs, the IDNR water well record database, and county contacts, with sources.
- IowaIowa private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Iowa county and directory pages, with sources.
- KansasKansas private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Kansas county and directory pages, with sources.
- KentuckyKentucky private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Kentucky county and directory pages, with sources.
- LouisianaLouisiana private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Louisiana county and directory pages, with sources.
- MaineMaine private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Maine county and directory pages, with sources.
- MarylandMaryland private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Maryland county and directory pages, with sources.
- MassachusettsMassachusetts private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Massachusetts county and directory pages, with sources.
- MichiganMichigan private well facts in one place, covering new-well testing rules, the MDHHS testing schedule, arsenic in southeast Michigan, testing options, and our Michigan county pages.
- MinnesotaMinnesota's well disclosure law for home sales, MDH testing advice, arsenic in new wells, free nitrate clinics, accredited lab search, the Minnesota Well Index, and county contacts, with sources.
- MississippiMississippi private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Mississippi county and directory pages, with sources.
- MissouriMissouri private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Missouri county and directory pages, with sources.
- MontanaMontana private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Montana county and directory pages, with sources.
- NebraskaNebraska private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Nebraska county and directory pages, with sources.
- NevadaNevada private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Nevada county and directory pages, with sources.
- New HampshireNew Hampshire private well facts in one place, covering arsenic, radon and PFAS, NHDES testing guidance, town testing rules, accredited labs, and our New Hampshire county pages.
- New JerseyNew Jersey private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our New Jersey county and directory pages, with sources.
- New MexicoNew Mexico private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our New Mexico county and directory pages, with sources.
- New YorkNew York's property disclosure questions on wells, county and town testing laws at sale, NYSDOH testing advice, ELAP lab search, free PFAS testing, DEC well records, and contacts, with sources.
- North CarolinaNorth Carolina private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our North Carolina county and directory pages, with sources.
- North DakotaNorth Dakota private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our North Dakota county and directory pages, with sources.
- OhioOhio's home-sale disclosure, county point-of-sale well inspections such as Summit County's, arsenic estimates, what to test, Ohio EPA certified labs, the ODNR well log search, and contacts, with sources.
- OklahomaOklahoma private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Oklahoma county and directory pages, with sources.
- OregonOregon private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Oregon county and directory pages, with sources.
- PennsylvaniaPennsylvania private well facts in one place. There are no statewide testing rules, so this covers DEP's testing advice, Penn State county data, where to buy bacteria test kits, and our Pennsylvania county pages.
- Rhode IslandRhode Island private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Rhode Island county and directory pages, with sources.
- South CarolinaSouth Carolina private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our South Carolina county and directory pages, with sources.
- South DakotaSouth Dakota private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our South Dakota county and directory pages, with sources.
- TennesseeTennessee private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Tennessee county and directory pages, with sources.
- TexasTexas private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Texas county and directory pages, with sources.
- UtahUtah private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Utah county and directory pages, with sources.
- VermontVermont private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Vermont county and directory pages, with sources.
- VirginiaWhat Virginia requires when a home with a well is sold, what VDH says homebuyers should test for, the Virginia Household Water Quality Program clinics, certified lab search, well records and contacts, with sources.
- WashingtonWashington private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Washington county and directory pages, with sources.
- West VirginiaWest Virginia private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our West Virginia county and directory pages, with sources.
- WisconsinWhat Wisconsin requires (and doesn't) when a home with a well is sold, the DNR inspection form, statewide test data, certified lab lists, well records, the Well Compensation Grant, and contacts, with sources.
- WyomingWyoming private well resources in one place: the state's private well program, certified drinking water labs, well driller licensing, USGS well-use estimates and our Wyoming county and directory pages, with sources.
What's on every state page
- Who to call: the state's private well program, from EPA's state program directory, plus CDC's advice on what local health departments can help with.
- Certified labs: the state agency that certifies drinking water labs and how to view its list, from EPA's August 2025 table of state certification programs.
- Licensed well drillers: the state's driller licensing or lookup page where we've confirmed one.
- Home-sale rules: only where we've checked the statute or agency page. See the full table in buying a home with a well.
- How many people use wells: USGS's 2015 county-level estimates, added up by state.
Looking for a county? See all county pages. Looking for a driller, lab or inspector? See the directory.