Water testing in Suffolk County, NY

Lowest listed local program price: $100, other prices posted, Suffolk County Department of Health Services, Bureau of Drinking Water.

Well waterMail-in option

Suffolk County Private Well Water Testing Program

$100, other prices posted

  • Microbiological quality
  • Inorganic chemicals
  • Volatile organic compounds
  • Petroleum products
  • Aldicarb (agricultural areas)

Complete and sign the Request for Private Well Water Analysis form with your tax map location, then mail it with a $100 (existing well) or $350 (new construction) check made out to Suffolk County Department of Health Services, or the notarized exemption form in place of payment; county staff collect the sample for you.

All posted prices

$100.00 is the fee for sample collection and water quality analysis for any existing private well [...] $350.00 is the fee [...] for any private well which serves new construction

Who can use it: Tests only the home's primary drinking water well; households with cumulative family income under $25,000 per year can be exempted from the fee with a signed, notarized Request for Exemption form; department may limit retesting frequency

  • Suffolk County DHS, Bureau of Drinking Water, H. Lee Dennison Bldg, 100 Veterans Memorial Hwy, P.O. Box 6100, Hauppauge · 631-852-5810

Checked October 1, 2026. Official page · Report a change

See statewide tests and certified-lab lists for New York.

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