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Rock Creek Village

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
667 people
Connections
300
Water source
Surface water bought from another system
Based in
Rock Creek, OH
County
Ashtabula
Owner
Local government
The ZIP code it serves

44084

The short answer

1 result is above EPA’s legal limit, and 1 more is above the health goal. The worst: Total trihalomethanes (TTHM), above the legal limit. 9 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2022 to 2026.

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.9 ppm, for the period ending June 30, 1996. None since is on file, so it is not counted as a current finding.

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): Ohio’s own results, samples taken from Feb. 10, 2020 to Nov. 12, 2025, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

76.8ppb

Highest yearly average, 2020 to 2025

2025 average: 37.5 ppb

Averaged by year, the highest was 76.8 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 117 ppb. In 2025, the latest year on file, its 10 samples averaged 37.5 ppb. EPA judges this limit at each sampling point, and recorded a violation for total trihalomethanes (TTHM) at this utility in 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 87.3 ppb, in 2019, and EPA recorded violations in 2018 and 2019.

What handles it

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

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

0.8ppb

90th percentile, 2026

In the latest period, 9 in 10 homes sampled were at or below 0.8 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

Below EPA’s limits1

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

30.2ppb

Highest yearly average, 2020 to 2025

2025 average: 24.5 ppb

Averaged by year, the highest was 30.2 ppb, in 2020, below EPA’s legal limit of 60 ppb. Its highest single sample was 46 ppb. In 2025, the latest year on file, its 10 samples averaged 24.5 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 44.9 ppb, in 2012.

What handles it

No certification claim covers this compound yet.

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: Trihalomethanes (TTHM) Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Lead

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Lead

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 water filters for lead, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Lead and Copper Rule RevisionsThe required inventory of lead service lines was not completed or submitted on time.EPA: LSL InventoryOct. 17, 2024—Resolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2020 to Sept. 30, 20200.082 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2020 to June 30, 20200.088 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2020 to March 31, 20200.086 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2019 to Dec. 31, 20190.088 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2019 to Sept. 30, 20190.099 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2019 to June 30, 20190.089 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2019 to March 31, 20190.086 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2018 to Dec. 31, 20180.082 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 23 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are Ohio’s own from 2020 on, with EPA’s national file for 2012 to 2019. Rock Creek Village’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 Feb. 10, 2020 to Nov. 12, 2025.

Testing your own tap

Rock Creek Village’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 Rock Creek Village serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Geauga County Department of Water Resources

    Chardon, OH · about 16 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (440) 285-2603

  • Biosolutions, LLC

    Chagrin Falls, OH · about 28 miles

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

    (440) 708-2999

  • BSA Environmental Services, Inc.

    Beachwood, OH · about 35 miles

    (216) 765-0582

All 76 certified labs for Ohio

Sources

PWSID OH0401111. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Ashtabula County

All Ohio utilities

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