Certified well water labs in Rhode Island (2026)
Rhode Island’s own State Health Laboratories in Providence test private wells for a posted price: the yearly Kit A is $95, the 3–5 year Kit B is $280, and the full 5–10 year Kit C is $410. Private certified labs in Warwick and West Warwick post homeowner packages from about $190. And if you are buying a house with a well, state law gives you a 10-day window to run a full test panel with a licensed sampler before you are locked in.
The short version
- Yearly check: State Health Lab Kit A, $95. Pick up bottles at 150 Richmond St. in Providence, collect the sample, and bring it back the same day, Monday–Thursday. Kit A covers coliform bacteria, nitrate, nitrite, color, chloride, sodium, and turbidity—exactly RIDOH’s yearly list.
- Buying a home: you need licensed experts, not a kit. Rhode Island requires a full panel (bacteria, metals, nitrate, VOCs, MTBE and more) before a sale. The buyer usually pays and has 10 days after signing the purchase and sale agreement. One posted example: New England Testing Lab’s RI DPH Series $350 plus a $150 licensed sampler fee.
- Check the special-testing map. In some towns RIDOH also recommends arsenic (old orchards), beryllium (bedrock in places like Coventry, Exeter, Scituate), or PFAS. The State Lab charges $20 each for arsenic and beryllium and $200 for PFAS.
How Rhode Island’s system actually works
Private wells serve an estimated 10–11% of Rhode Islanders, mostly in rural areas: only about a third of the state’s land is inside a public water service area (RIDEM, citing USGS). The owner is responsible for testing. RIDOH’s Private Well Program and URI Cooperative Extension’s Home*A*Syst program give free advice and recommend a three-tier schedule: every year coliform bacteria, nitrate/nitrite, color, chloride, sodium, and turbidity; every 3–5 years metals, corrosivity, and hardness; every 5–10 years volatile organic compounds and MTBE. Results usually take 10–15 business days.
Unlike most states, Rhode Island also requires testing in two situations: when a new well is put into service (before a certificate of occupancy) and before a home with a well is sold or transferred. That testing must be collected and interpreted by state-licensed private well samplers and interpreters. Questions: RIDOH Private Well Program 401-222-6867 or DOH.RIDWQ@health.ri.gov; URI’s Private Well Extension Program 401-874-5398 or safewater@uri.edu.
Options we verified
- RIDOH State Health Laboratories (Providence). Posted on the Lab Order Form for Private Well Water: Kit A annual $95 (coliform bacteria, nitrate, nitrite, color, chloride, sodium, turbidity) · Kit B 3–5 year $280 (Kit A plus alkalinity, pH, conductance, TDS, fluoride, hardness, sulfate, calcium, iron, manganese, lead, and other metals) · Kit C 5–10 year $410 (Kits A and B plus VOCs, petroleum hydrocarbons, and MTBE). Individual tests include coliform $25, nitrate $15, arsenic $20, beryllium $20, VOCs/TPH/MTBE $130, and PFAS $200. Pick up bottles Monday–Friday 8:30 a.m.–4:30 p.m.; drop off samples Monday–Thursday, 8:30 a.m.–3:30 p.m. per RIDOH’s web page (call to confirm—the form lists 4:30). No Friday drop-offs or the day before a state holiday. Bring samples the day you collect them, on ice. Payment at drop-off by check or money order to “The General Treasurer, State of RI,” or card (+$1 and 2%); no cash. Results by email or mail in 10–14 business days. 150 Richmond St., Suite 100 (sample entrance off Clifford St.) · 401-222-5600 · bottles/receiving 401-222-6064. Sources: Lab Order Form (PDF) · Drinking Water Quality Testing · Testing Your Well Water (checked Oct 18, 2026).
- New England Testing Laboratory (West Warwick). On RIDOH’s certified list. Homeowner packages, prices effective January 2026: Basic Series $190 (coliform/E. coli, pH, color, odor, turbidity, nitrate/nitrite, fluoride, chloride, sulfate, hardness, iron, lead, manganese, sodium) · Complete Series $375 (adds first-draw lead/copper, arsenic, calcium, magnesium, TDS, alkalinity, conductance) · Comprehensive Series $490 (Complete plus VOCs including MTBE) · RI DPH Series for real estate sales and new wells $350 plus $150 licensed sampler fee (must be collected by their certified sampling technician). Add-ons: arsenic $27, beryllium $27, VOCs $125, PFAS $400; $50 minimum unless it’s a single bacteria test. Deliver samples within 24 hours. 59 Greenhill St., West Warwick · 401-353-3420 / 888-863-8522. Source: Private Well Packages (PDF).
- Rhode Island Analytical Laboratories (Warwick). On RIDOH’s certified list and its list of labs accepting private-well PFAS samples. Posted Rhode Island homeowner packages: RI Annual $197 (total coliform, chloride, nitrate, nitrite, color, turbidity, sodium) · RI Comprehensive $443 (adds fluoride, sulfate, metals, hardness, alkalinity, pH, conductance, TDS) · RI Property Transfer $649 (Comprehensive plus VOCs including MTBE; ask whether licensed sampling is included) · HUD/VA $126 (nitrate, nitrite, coliform, lead). PFAS, radon, arsenic, and beryllium are listed as additional tests—call for prices. 41 Illinois Ave., Warwick · 401-737-8500 / 800-937-2580. Source: RI Homeowner Services.
- Other RIDOH-certified labs (call for fees). Eurofins (North Kingstown and Warwick), Microbac Laboratories (Dayville, CT, 800-334-0103), and ESS Laboratory in Cranston (401-461-7181, on RIDOH’s PFAS list). We did not find posted homeowner prices, so we don’t list any. Source: RIDOH Certified Drinking Water Testing Labs (updated Sep 3, 2026).
Buying or selling a home with a well
- The law. Every Rhode Island purchase and sale agreement for a home on a private well must give the buyer a 10-day period (unless both sides agree otherwise) to test the water under RIDOH rules. The buyer pays for sampling, analysis, and a licensed interpreter’s opinion unless the contract says otherwise. If the clause is missing, the seller doesn’t provide past results, or the results exceed state limits, the buyer can void the agreement in writing before closing. Source: R.I. Gen. Laws § 5-20.8-12.
- Required tests. Alkalinity, total coliform and E. coli, hardness, chloride, fluoride, iron, lead (first draw), manganese, nitrate/nitrite, pH, specific conductance, sulfate, TDS, turbidity, regulated VOCs, and MTBE (state health advisory 40 ppb), plus anything found in earlier tests. Your town building official can add more. Sellers must share the past 10 years of well reports. Sources: 216-RICR-50-05-2 §2.12 · RIDOH/URI Tip Sheet 28 (PDF).
- Posted prices for the full panel. New England Testing Lab RI DPH Series $350 + $150 sampler; RI Analytical Property Transfer $649. Ask your home inspector to use a licensed sampler and interpreter—self-collected kits don’t satisfy the law.
What to test for in Rhode Island
- Bacteria, nitrate/nitrite, color, chloride, sodium, turbidity: every year. State Lab Kit A $95; RI Analytical RI Annual $197; NETL Basic $190 covers these plus metals and hardness.
- Metals, hardness, corrosivity (pH, alkalinity, TDS, conductance): every 3–5 years. Kit B $280 (includes Kit A). Lead and copper matter if you have older or copper plumbing.
- VOCs and MTBE: every 5–10 years, and always at a sale. Kit C $410 (includes A and B); State Lab VOCs/TPH/MTBE alone $130.
- Arsenic: not common naturally in Rhode Island groundwater, but test if you live near a current or former fruit orchard or a factory that used arsenic. State Lab $20; NETL $27. Source: Tip Sheet 2 (PDF).
- Beryllium: occurs in bedrock in parts of East Greenwich, West Greenwich, Coventry, Exeter, Johnston, western Cranston, and Scituate; test every 3–5 years there. State Lab $20. Source: Tip Sheet 4 (PDF).
- PFAS: not required at sale or for new wells, but recommended near PFAS sources (industrial sites, military bases, fire training areas, airports). State Lab $200; NETL $400; RI Analytical and ESS also accept private-well PFAS. RIDEM is testing some private wells near targeted areas for free and contacts owners directly. Check your address on RIDOH’s special-testing map.
Mail-in kits (for a broader PDF)
These independent labs mail you bottles, run the tests, and email a PDF. Neither one sells softeners. Prices were checked this week. In Rhode Island, mail-in kits are for your own peace of mind only: they don’t satisfy home-sale testing, and RIDOH advises using a certified lab for PFAS.
- Tap Score / SimpleLab Essential Well: $209 listed (includes arsenic and uranium among 54 analytes).
- National Testing Laboratories WaterCheck Basic: $220 listed. Next-day return shipping isn’t included.
In Rhode Island, the cheapest yearly check is the State Health Lab’s $95 Kit A, which matches RIDOH’s annual list exactly—just plan a Monday–Thursday trip to Providence. Every few years, step up to Kit B ($280) or Kit C ($410). If you can’t get to Providence, New England Testing Lab and RI Analytical post comparable packages from $190. Buying a home? Posted prices for the required panel run from $500 (NETL’s $350 series plus $150 sampler) to $649 (RI Analytical; ask about sampling). Test inside the 10-day window.
Side by side for a Rhode Island well
On a phone, the table scrolls sideways.
| RIDOH State Health Lab | New England Testing Lab | RI Analytical | Mail-in (Tap Score / NTL) | |
|---|---|---|---|---|
| Best for | Cheapest yearly and 5–10 year kits | Home sale panel with sampler | Packages matched to RIDOH tiers | A broader analyte list in one PDF |
| Typical cost | $95 / $280 / $410 | $190 Basic; $350 + $150 sale panel | $197 Annual; $443; $649 transfer | About $209–$220 |
| How | Bottles at 150 Richmond St.; drop off Mon–Thu | Call 401-353-3420; deliver within 24 hrs | Call 401-737-8500 for bottles | Ship it yourself |
| Counts for a home sale? | Only with a licensed sampler/interpreter | Yes (RI DPH Series) | Ask (Property Transfer package) | No |
Remind me to test my well every year
CDC and EPA say to test a private well at least once a year. We’ll send one email a year, about when your test is due, with your state’s lab options.
Thanks, you’re on the list. We’ll email you once a year when it’s time to test your well. Nothing else.
What to do in Rhode Island
- This week, call the State Health Lab at 401-222-6064, pick up a Kit A ($95) at 150 Richmond St., and drop it off the same day, Monday–Thursday.
- Check your address on RIDOH’s special-testing map and add arsenic, beryllium ($20 each), or PFAS ($200) if it flags you.
- Every 3–5 years, order Kit B ($280); every 5–10 years, Kit C ($410) for VOCs and MTBE.
- Buying a home with a well? Put the 10-day testing clause in the purchase and sale agreement and hire a licensed sampler and interpreter (for example, NETL’s RI DPH Series, $350 + $150).
- If you want a broader PDF, use Tap Score / SimpleLab or National Testing Laboratories.
Skip this if…
- You already chlorinated the well. Wait and flush before you take a bacteria sample. A chlorinated sample gets rejected or tells you nothing.
- It’s Friday or the day before a state holiday. The State Health Lab won’t accept private well samples then, and most tests have short holding times. Sample early in the week.
- The “free test” comes with a sales pitch. RIDOH specifically warns about “free” testing offered in exchange for a treatment-system pitch. Get an independent result from a certified lab first. See the Home Depot free-kit comparison.
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