Skip to content
TapBuff
ZIP

McKean Twp Waterworks

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

Serves
1,048 people
Connections
371
Water source
Surface water bought from another system
Based in
Erie, PA
County
Erie
Owner
Local government
The 2 ZIP codes it serves

16426, 16509

The short answer

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

What handles it

What was found

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): Pennsylvania’s own results, samples taken from Feb. 5, 2020 to Aug. 5, 2026, 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

64.9ppb

Highest yearly average, 2020 to 2026

2026 average: 57.3 ppb

Averaged by year, the highest was 64.9 ppb, in 2025, below EPA’s legal limit of 80 ppb. Its highest single sample was 115 ppb. In 2026, the latest year on file, its three samples averaged 57.3 ppb. EPA judges this limit at each sampling point, and recorded a violation for total trihalomethanes (TTHM) at this utility in 2025. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 61.5 ppb, in 2018.

What handles it

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

Below EPA’s limits1

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

32.4ppb

Highest yearly average, 2020 to 2026

2026 average: 29.6 ppb

Averaged by year, the highest was 32.4 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 46.1 ppb. In 2026, the latest year on file, its three samples averaged 29.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 39.5 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

    Claim: Trihalomethanes (TTHM) Reduction

    For: Total trihalomethanes (TTHM)

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claim: Trihalomethanes (TTHM) Reduction

    For: Total trihalomethanes (TTHM)

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. 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

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2025 to June 30, 20250.081 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 6 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 Pennsylvania’s own from 2020 on, with EPA’s national file for 2012 to 2019. McKean Twp Waterworks’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; Pennsylvania’s results run from Feb. 5, 2020 to Aug. 5, 2026.

Testing your own tap

McKean Twp Waterworks’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 Pennsylvania certifies.

The 3 labs Pennsylvania certifies closest to the area McKean Twp Waterworks serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Presque Isle Water Testing

    Erie, PA · about 4 miles

    Certified for bacteria, nitrate

    (814) 636-0555

  • Free-Col Laboratory

    Erie, PA · about 7 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (814) 460-0861

  • Microbac Laboratories, Inc - Erie Division

    Erie, PA · about 9 miles

    Certified for bacteria

    (814) 825-8533

Penn State Agricultural Analytical Services Laboratory: Drinking water test kits from many county Extension offices, mailed back to the lab overnight with payment. Packages cover bacteria and basic chemistry, with add-ons for nitrate, metals, lead, and mining or gas drilling concerns. The standard package of bacteria, pH and total dissolved solids is $60, or $70 with nitrate; bacteria alone is $40, nitrate $15 and lead $25. Drinking Water Testing, Penn State Agricultural Analytical Services Lab.

All 108 certified labs for Pennsylvania

Sources

PWSID PA6250096. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Erie County

All Pennsylvania utilities

What to do next