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Red Hill Water Authority

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

Serves
2,500 people
Connections
1,235
Water source
Groundwater
Based in
East Greenville, PA
County
Montgomery
Owner
Local government
The 3 ZIP codes it serves

18056, 18076, 18092

The short answer

1 result is above EPA’s legal limit, 1 more is above the limit’s level with no violation recorded, 1 more is above EPA’s new limit, which takes effect in 2029, and 2 more are above the health goal. The worst: Lead, above the action level. No health-based violations on file since 2016.

What handles it

What was found

PFAS: Pennsylvania’s own results under its PFAS rule, entry point samples taken from Aug. 2, 2023 to Sept. 9, 2026.

Lead and copper: EPA SDWIS monitoring periods ending 1993 to 2010.

Arsenic, uranium, nitrate, total trihalomethanes (TTHM), chromium (total), fluoride and haloacetic acids (HAA5): Pennsylvania’s own results, samples taken from March 20, 2020 to Sept. 22, 2026, with EPA’s 2012 to 2019 file for earlier years.

PFAS: PFOA, PFOS, PFHxS, PFNA and PFBS were found, of the six PFAS in EPA’s 2024 drinking water rule; their results are below.

EPA’s 2024 PFAS rule, compound by compound

PFASEPA’s limitResult
PFOA4.0 pptAbove the limit’s level, no violation18 ppt highest, found in 13 of 18 samples. Details
PFOS4.0 pptAbove EPA’s new limit (2029)6.1 ppt highest, found in 13 of 18 samples. Details
PFHxS10 pptBelow EPA’s limits2.1 ppt highest, found in 1 of 8 samples. Details
PFNA10 pptBelow EPA’s limits1.9 ppt highest, found in 3 of 8 samples. Details
HFPO-DA (GenX)10 pptNot foundNot found in any of 8 samples
PFBSIndex onlyBelow EPA’s limits18 ppt highest, found in 5 of 8 samples. Details
Results from Pennsylvania’s own PFAS monitoring, samples where water enters the pipes; each compound’s card has its four-quarter averages, the way limits are judged. The limits are EPA’s 2024 rule, with compliance due from 2029; EPA has since proposed changes to some of them, explained on each compound’s page. Pennsylvania’s own limits for PFOA and PFOS are in force now. PFBS has no limit of its own and counts only toward EPA’s Hazard Index, which TapBuff works out only from UCMR 5’s averages, so it isn’t given here.

About PFAS certifications

NSF’s PFAS claims are tested to below 20 ppt. EPA’s limit is 4.0 ppt, and EPA says no certification yet shows a filter reaching its levels.

Above the legal limit1

Lead

Comes from pipes, often your own

Above the action level

25.3ppb

90th percentile, 2010

In the latest period, 9 in 10 homes sampled were at or below 25.3 ppb, above EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027, and this result is at or above that. EPA’s health goal for lead is zero.

What handles it

Above the limit’s level, no violation recorded1

PFOA

Comes from the source

Above the limit’s level, no violation

18ppt

Highest sample, March 11, 2024; found in 13 of 18

2026 average: 2.7 ppt

The highest sample was 18 ppt, about 4.5 times EPA’s new limit of 4.0 ppt, which takes effect in 2029. EPA’s health goal is zero. Compliance will be judged on a running annual average, not one sample. Averaged over four quarters at one entry point, the way both Pennsylvania’s limit and EPA’s are judged, the highest was 14.9 ppt, for the year to Sept. 30, 2024: above Pennsylvania’s limit of 14 ppt and above EPA’s new limit of 4.0 ppt. Pennsylvania recorded no violation of its limit for PFOA here; its own reckoning of the average, which decides compliance, may count quarters or samples differently. In 2026, the latest year on file, its two samples averaged 2.7 ppt.

What handles it

Above EPA’s new limit, which takes effect in 20291

PFOS

Comes from the source

Above EPA’s new limit (2029)

6.1ppt

Highest sample, March 11, 2024; found in 13 of 18

2026 average: 2.4 ppt

The highest sample was 6.1 ppt, above EPA’s new limit of 4.0 ppt, which takes effect in 2029. EPA’s health goal is zero. Compliance will be judged on a running annual average, not one sample. Averaged over four quarters at one entry point, the way both Pennsylvania’s limit and EPA’s are judged, the highest was 5.4 ppt, for the year to Sept. 30, 2024: below Pennsylvania’s limit of 18 ppt and above EPA’s new limit of 4.0 ppt. In 2026, the latest year on file, its two samples averaged 2.4 ppt.

What handles it

Above the health goal2

Arsenic

Comes from the source

Above the health goal

4.3ppb

Highest yearly average, 2021 to 2022

Averaged by year, the highest was 4.3 ppb, in 2022: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 9.0 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 9.0 ppb, in 2018.

What handles it

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

Uranium

Comes from the source

Above the health goal

0.006ppb

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 0.006 ppb, in 2024: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 3.4 ppb, in 2012.

What handles it

Below EPA’s limits5

Nitrate

Comes from the source

Below EPA’s limits

4.4ppm

Highest sample; found in 30 of 30

2026 average: 2.4 ppm

The highest sample, in 2020, was 4.4 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its two samples averaged 2.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 5.1 ppm, in 2013.

What handles it

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

PFHxS

Comes from the source

Below EPA’s limits

2.1ppt

Highest sample, July 22, 2024; found in 1 of 8

2026: not found

The highest sample was 2.1 ppt, below EPA’s new limit of 10 ppt, which takes effect in 2029. No entry point has four quarters of results in a row to average, the way EPA’s limit is judged. In 2026, the latest year on file, it wasn’t found in any of its two samples.

What handles it

PFNA

Comes from the source

Below EPA’s limits

1.9ppt

Highest sample, Oct. 7, 2024; found in 3 of 8

2026 average: 0.85 ppt

The highest sample was 1.9 ppt, below EPA’s new limit of 10 ppt, which takes effect in 2029. No entry point has four quarters of results in a row to average, the way EPA’s limit is judged. In 2026, the latest year on file, its two samples averaged 0.85 ppt.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

1.7ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 1.7 ppb, in 2026, below EPA’s legal limit of 80 ppb. Its highest single sample was 3.3 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.7 ppb, in 2015.

What handles it

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

PFBS

Comes from the source

Below EPA’s limits

18ppt

Highest sample, July 22, 2024; found in 5 of 8

2026 average: 1.7 ppt

The highest sample was 18 ppt, below EPA’s hazard index benchmark of 2,000 ppt. PFBS has no legal limit or health goal of its own. In 2026, the latest year on file, its two samples averaged 1.7 ppt.

What handles it

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

From routine monitoring

  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)

PFAS, from Pennsylvania’s own monitoring

  • HFPO-DA (GenX)

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: Lead Reduction, PFOA Reduction, PFOS Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Lead, PFOA, PFOS, Arsenic

    Other certifiers’ wording: Total PFAS Reduction; Perfluorooctanoic Acid (PFOA); Perfluorooctane Sulfonate (PFOS); Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Lead Reduction, Perfluorooctanoic Acid (PFOA), Perfluorooctane Sulfonate (PFOS), Arsenic (Pentavalent)<=50 ppb Reduction, Uranium

    For: Lead, PFOA, PFOS, Arsenic, Uranium

    Other certifiers’ wording: 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 water filters for lead, ranked

The best water filters for PFAS, ranked

The best reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 188 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Arsenic, uranium, nitrate, total trihalomethanes (TTHM), chromium (total), fluoride and haloacetic acids (HAA5) results here are Pennsylvania’s own from 2020 on, with EPA’s national file for 2012 to 2019. Red Hill Water Authority’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 March 20, 2020 to Sept. 22, 2026; Pennsylvania’s PFAS results run from Aug. 2, 2023 to Sept. 9, 2026.

Testing your own tap

Red Hill Water Authority’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 Red Hill Water Authority serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Analytical Laboratories, Inc

    Telford, PA · about 11 miles

    Certified for bacteria, nitrate

    (215) 723-6466

  • SPL - Reading

    Reading, PA · about 23 miles

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

    (610) 375-8378

  • ABE Laboratories LLC

    Bath, PA · about 24 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (610) 837-7721

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 PA1460039. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Montgomery County

All Pennsylvania utilities

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