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Village of Somerset

What EPA’s and Ohio’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
1,490 people
Connections
627
Water source
Surface water
Based in
Somerset, OH
County
Perry
Owner
Local government
The ZIP code it serves

43783

The short answer

Nothing in EPA’s and Ohio’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Lead and copper: copper at 46 mg/L (2005) is left out of this report: it is one of the results Ohio sent EPA in 2006, all at µg/L magnitudes though EPA’s file marks them mg/L.

Total trihalomethanes (TTHM), fluoride, nitrate, haloacetic acids (HAA5), arsenic and chromium (total): Ohio’s own results, samples taken from Jan. 2, 2020 to Dec. 2, 2025, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits4

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

48.7ppb

Highest yearly average, 2020 to 2025

2025 average: 24.1 ppb

Averaged by year, the highest was 48.7 ppb, in 2024, below EPA’s legal limit of 80 ppb. Its highest single sample was 75 ppb. In 2025, the latest year on file, its two samples averaged 24.1 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 55.8 ppb, in 2012.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Fluoride

Forms or is added in treatment

Below EPA’s limits

1.0ppm

Highest yearly average, 2020 to 2025

2025, one sample: 0.93 ppm

Averaged by year, the highest was 1.0 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.93 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.0 ppm, in 2014.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

2.3ppm

Highest sample; found in 56 of 72

2025 average: 0.72 ppm

The highest sample, in 2025, was 2.3 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its 12 samples averaged 0.72 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.6 ppm, in 2016.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

13.9ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 13.9 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 21.1 ppb. In 2025, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 16.6 ppb, in 2013.

What handles it

No certification claim covers this compound yet.

3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Lead

Violations since 2016

No health-based violations on file with EPA since 2016. There are 2 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), fluoride, nitrate, haloacetic acids (HAA5), arsenic and chromium (total) results here are Ohio’s own from 2020 on, with EPA’s national file for 2012 to 2019. Village of Somerset’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Ohio’s results run from Jan. 2, 2020 to Dec. 2, 2025.

Testing your own tap

Village of Somerset’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Ohio certifies.

The 3 labs Ohio certifies closest to the area Village of Somerset serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • SafeSource Water Analytics LLC

    McConnelsville, OH · about 27 miles

    Certified for bacteria, nitrate

    (740) 292-2002

  • Ohio Department of Agriculture Consumer Protection Laboratory

    Reynoldsburg, OH · about 29 miles

    Certified for bacteria

    (614) 728-6230

  • Coshocton Environmental Testing, LLC

    Coshocton, OH · about 38 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts

    (740) 622-3328

All 76 certified labs for Ohio

Sources

PWSID OH6401111. Rebuilt from EPA data on Oct. 18, 2026.

Also in Perry County

All Ohio utilities

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