Well water testing in Knox County, OH
Knox Public Health tests private wells for bacteria. A sanitarian sample costs $81, or $46 if you collect it yourself. Quanti-Tray counts cost $92 or $58. Samples are taken at set times Tuesday to Friday. Call 740-392-2200.
- Bacteria test
- $46
- Sample
- You or staff take the sample
Checked Nov 1, 2026 · All 3 sources
Where to get your well tested
Knox Public Health, Environmental Health
Checked Nov 1, 2026 on knoxhealth.com
| Total coliform, you collect (presence/absence)coliform bacteria | $46 |
| Quanti-Tray bacteria count, you collectcoliform bacteriaGives a numeric value. | $58 |
| Total coliform, sanitarian collects (presence/absence)coliform bacteria | $81 |
| Quanti-Tray bacteria count, sanitarian collectscoliform bacteriaGives a numeric value. | $92 |
| Real estate sample with written report on the systemcoliform bacteriaSample plus a written description of the water system. | $105 |
- Who takes the sample
- You or staff take the sample
- Getting a bottle
- Fill out the Request for Private Water Sample form on the county's water page. The form says whether you or a sanitarian collects the sample.
- Returning the sample
- Bring or send the request form with payment (checks to Knox Public Health). Samples are taken or turned in only at set times: Tuesday and Thursday collect after noon and submit by 4pm; Wednesday before 8:30am; Friday before 10am. No samples on Monday.
- Good to know
- The fee is $81 when a sanitarian takes the sample and $46 when you do.
- Address
- 11660 Upper Gilchrist Road, Mount Vernon, OH 43050
Free and lower-cost testing
Household water well loan program
Who qualifies: Owner-occupied homes in rural areas of Ohio with a household income up to $55,216
Low-interest loan for well improvements and home water treatment systems
Program pageRules that apply
- A new, altered or repaired well must pass tests for coliform bacteria, E. coli and nitrate before the local health district approves it. The sample must go to a lab certified by the Ohio Department of Health or Ohio EPA.
- The Ohio Department of Health advises using a certified lab for home-sale and other well tests too.
Well testing in Knox County: quick answers
How much does well water testing cost in Knox County?
Knox Public Health, Environmental Health charges $46 for "Total coliform, you collect (presence/absence)". Prices are from the provider's own fee list, checked Nov 1, 2026.
Who tests well water in Knox County?
Knox Public Health, Environmental Health tests private wells for residents.
How do I get a sample bottle in Knox County?
Fill out the Request for Private Water Sample form on the county's water page. The form says whether you or a sanitarian collects the sample.
Where this comes from
We read these 3 pages on Nov 1, 2026. Fees and hours change, so call before you take a sample.
- Environmental healthknoxhealth.com · Web page
- Environmental Healthknoxhealth.com · PDF
- Water sample schedule New logoknoxhealth.com · PDF
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