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Tri - County Rural W and S District

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
3,000 people
Connections
1,544
Water source
Groundwater
Based in
Waterford, OH
County
Washington
Owner
Private
The ZIP code it serves

45786

The short answer

3 results are above the health goal. The worst: Nitrate, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2019 to 2026. Copper at 389 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.

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.6 ppm, for the period ending June 30, 1996. None since is on file, so it is not counted as a current finding.

Nitrate, arsenic, total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride and chromium (total): Ohio’s own results, samples taken from Jan. 10, 2020 to Dec. 5, 2025, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal3

Nitrate

Comes from the source

Above the health goal

10.7ppm

Highest sample; found in 131 of 131

2025 average: 6.4 ppm

One sample, in 2022, was above EPA’s legal limit of 10 ppm, at 10.7 ppm. No follow-up sample at that point within 30 days is on file. 10 ppm is also EPA’s health goal. In 2025, the latest year on file, its 14 samples averaged 6.4 ppm. EPA recorded no violation for nitrate at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 11.7 ppm, in 2018.

What handles it

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

Lead

Comes from pipes, often your own

Above the health goal

1.9ppb

90th percentile, 2026

In the latest period, 9 in 10 homes sampled were at or below 1.9 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Arsenic

Comes from the source

Above the health goal

0.5ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 0.5 ppb, in 2025: below EPA’s legal limit of 10 ppb, but above its health goal of zero. That was also the latest year on file.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

17.9ppb

Highest yearly average, 2020 to 2025

Averaged by year, the highest was 17.9 ppb, in 2025, below EPA’s legal limit of 80 ppb. Its highest single sample was 19.8 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 15.1 ppb, in 2017.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

6.5ppb

Highest yearly average, 2020 to 2025

2025 average: 4.3 ppb

Averaged by year, the highest was 6.5 ppb, in 2024, below EPA’s legal limit of 60 ppb. Its highest single sample was 7.1 ppb. In 2025, the latest year on file, its two samples averaged 4.3 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 5.1 ppb, in 2016.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.15ppm

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 0.15 ppm, in 2025, below EPA’s legal limit of 4.0 ppm. That was also the latest year on file.

What handles it

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Chromium (total)

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claims: Nitrate/Nitrite (30 ppm challenge), Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Nitrate, Lead, Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Nitrate/Nitrite Reduction, Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Nitrate, Lead, Arsenic

    Other certifiers’ wording: Nitrate; Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best reverse osmosis systems, ranked

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Nitrate, arsenic, total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride and chromium (total) results here are Ohio’s own from 2020 on, with EPA’s national file for 2012 to 2019. Tri - County Rural W and S District’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. 10, 2020 to Dec. 5, 2025.

Testing your own tap

Tri - County Rural W and S District’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 Tri - County Rural W and S District serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Microbac Laboratories, Inc. - Marietta Division

    Marietta, OH · about 13 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics, PFAS

    (740) 373-4071

  • SafeSource Water Analytics LLC

    McConnelsville, OH · about 15 miles

    Certified for bacteria, nitrate

    (740) 292-2002

  • Coshocton Environmental Testing, LLC

    Coshocton, OH · about 54 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 OH8403112. Rebuilt from EPA data on Oct. 18, 2026.

Also in Washington County

All Ohio utilities

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