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Redwood Estates PA LLC

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
725 people
Connections
290
Water source
Surface water bought from another system
Based in
Farmington Hills, PA
County
Allegheny
Owner
Private

The short answer

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

What was found

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): Pennsylvania’s own results, samples taken from Nov. 11, 2021 to Aug. 13, 2026.

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

72ppb

Highest yearly average, 2021 to 2026

2026 average: 62.7 ppb

Averaged by year, the highest was 72 ppb, in 2025, below EPA’s legal limit of 80 ppb. Its highest single sample was 101 ppb. In 2026, the latest year on file, its three samples averaged 62.7 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020.

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

23ppb

Highest yearly average, 2021 to 2026

2026 average: 16.6 ppb

Averaged by year, the highest was 23 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 48.6 ppb. In 2026, the latest year on file, its three samples averaged 16.6 ppb.

What handles it

No certification claim covers this compound yet.

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) and haloacetic acids (HAA5) results here are Pennsylvania’s own from 2021 on, with EPA’s national file for 2012 to 2019. Redwood Estates PA LLC’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 Nov. 11, 2021 to Aug. 13, 2026.

Testing your own tap

Redwood Estates PA LLC’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.

No lab Pennsylvania certifies is within 75 miles of the area Redwood Estates PA LLC serves on the state’s list. Some take samples by mail; the state’s page lists them all.

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 PA5020084. Rebuilt from EPA data on Oct. 18, 2026.

Also in Allegheny County

All Pennsylvania utilities

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