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Get your water tested in Ohio.

The labs Ohio certifies to test drinking water, from the state’s own list of Oct. 1, 2026. A lab test is the only way to know what is in your own tap or well.

The short answer

Ohio’s list has 76 labs certified to test drinking water: 51 in Ohio and 25 in other states. 12 of the labs here are named for a water utility and may test only its own water, so they come last.

Certification is test by test, so check that a lab is certified for what you want tested, and call first: it will say which bottles to use and how soon the sample has to arrive.

Labs in Ohio

39 labs, by city.

Labs in Ohio, certified by Ohio
LabCityPhoneCertified for
American Analytical Laboratories, Inc.Akron(330) 535-1300Bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eurofins ClevelandBarberton(330) 497-9396Bacteria, nitrate, lead and copper, metals, minerals and other inorganics
BSA Environmental Services, Inc.Beachwood(216) 765-0582Not listed
Greene County Sanitary Engineering LaboratoryBeavercreek(937) 562-7450Bacteria, nitrate, minerals and other inorganics
Logan County Health District LaboratoryBellefontaine(937) 592-9040Bacteria
Canton City Health DepartmentCanton(330) 489-3231Bacteria
Canton Water LaboratoryCanton(330) 489-3035Bacteria, nitrate, minerals and other inorganics
Biosolutions, LLCChagrin Falls(440) 708-2999Bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Geauga County Department of Water ResourcesChardon(440) 285-2603Bacteria, nitrate, minerals and other inorganics
ALS Environmental - CincinnatiCincinnati(513) 733-5336Lead and copper, metals, asbestos
Q LaboratoriesCincinnati(513) 471-1300Bacteria, nitrate
Cleveland Water Compliance LaboratoryCleveland(216) 664-3171Bacteria
Eurofins Environment Testing North CentralCleveland(216) 663-0808Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Benchmark Environmental Labs, Inc.Columbus(614) 267-4588Bacteria
Coshocton Environmental Testing, LLCCoshocton(740) 622-3328Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Alliance Technical Group, LLC-AkronCuyahoga Falls(330) 253-8211Nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
NEORSD Analytical ServicesCuyahoga Heights(216) 641-6000Bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Dayton Central Water Quality LaboratoryDayton(937) 333-6093Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Ream & Haager Laboratories, Inc.Dover(330) 343-3711Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Pace Analytical Services, LLC - DaytonEnglewood(800) 723-5227Bacteria, nitrate, minerals and other inorganics
BoJhun Environmental ServicesFostoria(419) 436-7066Bacteria
Superior LaboratoriesGalloway(614) 870-6826Bacteria
Eurofins DW and WW Central - LimaLima(419) 223-1362Bacteria
Microbac Laboratories, Inc. - Marietta DivisionMarietta(740) 373-4071Nitrate, lead and copper, metals, minerals and other inorganics, PFAS
Eurofins DW and WW Central - MarionMarion(740) 389-5991Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Kleinfelder Water Technologies LaboratoryMcClure(419) 748-7438Bacteria
SafeSource Water Analytics LLCMcConnelsville(740) 292-2002Bacteria, nitrate
Eastern Lab Services, Ltd.Medina(330) 670-7920Bacteria
CETEC Cleveland Environmental Technology, Inc.Middleburg Heights(216) 856-2898Bacteria
Edenridge Laboratory, Ltd.Millersburg(330) 893-2933Bacteria
Jones & Henry LaboratoriesNorthwood(419) 666-0411Nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
MASI LaboratoryPlain City(614) 873-4654Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
The Ohio State University Stone LaboratoryPut-in-Bay(419) 285-1845Not listed
Portage County Water ResourcesRavenna(330) 297-3685Bacteria, nitrate, minerals and other inorganics
Ohio Department of Agriculture Consumer Protection LaboratoryReynoldsburg(614) 728-6230Bacteria
Erie County Health Department LaboratorySandusky(419) 626-5623Bacteria
EnviroScienceStow(330) 688-0111Not listed
Cardinal Environmental Lab, LLCYoungstown(330) 797-8844Bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Mahoning County Board of HealthYoungstown(330) 270-2855Bacteria

Labs in other states

25 labs Ohio certifies outside the state, by state and city. Ask whether a lab takes samples by mail, and how fast they have to arrive.

Labs in other states, certified by Ohio
LabCityPhoneCertified for
Onterris Laboratories LLC - El Dorado HillsEl Dorado Hills, CA(916) 673-1520PFAS
Eurofins PomonaPomona, CA(626) 386-1100PFAS
Eurofins SacramentoSacramento, CA(916) 374-4308PFAS
SGS North America Inc. - OrlandoOrlando, FL(407) 425-6700PFAS
Pace Analytical Services, LLC - Ormond BeachOrmond Beach, FL(386) 672-5668PFAS
Eurofins South BendSouth Bend, IN(800) 332-4345Bacteria, PFAS, radioactivity
Pace Analytical Services, LLC - MadisonvilleMadisonville, KY(270) 821-7375Not listed
Pace Analytical Services, LLC - East LongmeadowEast Longmeadow, MA(413) 525-2332PFAS
Pace Analytical Services, LLC - MansfieldMansfield, MA(508) 898-9220PFAS
Battelle Analytical Chemistry ServicesNorwell, MA(781) 681-5535PFAS
Maine Laboratories LLC (dba PFAS Laboratories)Norridgewock, ME(207) 518-8030PFAS
ALS Environmental - HollandHolland, MI(616) 399-6070PFAS
Metiri - HoltHolt, MI(517) 699-0345PFAS
Pace Analytical Services, LLC - MinneapolisMinneapolis, MN(612) 607-6352Organic chemicals
Eurofins Built Environment Testing East - Cary NCCary, NC(919) 481-1413Asbestos
Onterris Laboratories LLC - WilmingtonWilmington, NC(910) 212-5856PFAS
SGS North America Inc. - WilmingtonWilmington, NC(910) 350-1903PFAS
Eurofins Built Environment Testing East - NJCherry Hill, NJ(856) 231-9449Asbestos
EMSL Analytical, Inc.Cinnaminson, NJ(800) 220-3675Not listed
Aqua Pennsylvania, Inc. - Bryn MawrBryn Mawr, PANot listedNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
Pace Analytical Services, LLC - GreensburgGreensburg, PA(724) 850-5600Radioactivity
Eurofins LancasterLancaster, PA(717) 656-2300Organic chemicals, PFAS
Eberline Analytical CorporationOak Ridge, TN(865) 481-0683Radioactivity
Analytical Services, Inc.Williston, VT(800) 723-4432Not listed
ALS Environmental - KelsoKelso, WA(800) 695-7222PFAS

Labs run by water utilities

12 labs named for a water utility or its plant. A utility’s lab may test only its own system’s water, so call before taking a sample there.

Labs run by water utilities, certified by Ohio
LabCityPhoneCertified for
Akron WTP LaboratoryAkron(330) 678-0077Not listed
Sebring Water Department LaboratoryBeloit(330) 821-7020Bacteria, nitrate, minerals and other inorganics
Bryan Water Plant LaboratoryBryan(419) 633-6160Bacteria
Celina Water Department LaboratoryCelina(419) 586-2270Bacteria
Cincinnati Miller WTP LaboratoryCincinnati(513) 624-5600Bacteria
Circleville WTP LaboratoryCircleville(740) 477-8242 ext. 1Bacteria
Jackson County Water Company LaboratoryJackson(740) 288-4815Bacteria
Leetonia WTP LaboratoryLeetonia(330) 427-8087Bacteria
Elyria Water Works LaboratoryLorain(440) 244-4310Not listed
Troy Water Plant LaboratoryTroy(937) 339-4826Bacteria
Twin City Water Plant LaboratoryUhrichsville(740) 922-2082Bacteria
Willard Water Plant LaboratoryWillard(419) 933-4001Not listed

What to ask a lab to test

Source: Ohio EPA, laboratories certified/accepted to perform analyses on public drinking water, dated Oct. 1, 2026, read Oct. 10, 2026. Labs are listed as the state lists them; what each is certified for is as far as the list says. Certifications change, so a lab’s own word is the latest.

A lab named for a water utility is listed apart. Distances on town pages are straight lines between ZIP code centers from the Census 2020 gazetteer. How labs are listed here.

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