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Arbour Court

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

Serves
180 people
Connections
55
Water source
Groundwater
Based in
Nassau, PA
County
Chester
Owner
Private
The ZIP code it serves

19362

The short answer

2 results are above EPA’s new limit, which takes effect in 2029. The worst: PFOA, above EPA’s new limit (2029). 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 March 12, 2025 to Aug. 25, 2026.

Nitrate, arsenic, chromium (total), fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and uranium: Pennsylvania’s own results, samples taken from June 15, 2020 to Sept. 17, 2026, with EPA’s 2012 to 2019 file for earlier years.

PFAS: PFOA, PFOS, PFHxS and PFBS were found, of the six PFAS in EPA’s 2024 drinking water rule; their results are below. Two other PFAS with no federal limit were found, the highest PFHxA at 3.2 ppt: see them below.

EPA’s 2024 PFAS rule, compound by compound

PFASEPA’s limitResult
PFOA4.0 pptAbove EPA’s new limit (2029)7.6 ppt highest, found in 6 of 6 samples. Details
PFOS4.0 pptAbove EPA’s new limit (2029)6.8 ppt highest, found in 6 of 6 samples. Details
PFHxS10 pptBelow EPA’s limits2.7 ppt highest, found in 6 of 6 samples. Details
PFNA10 pptNot foundNot found in any of 6 samples
HFPO-DA (GenX)10 pptNot foundNot found in any of 6 samples
PFBSIndex onlyBelow EPA’s limits2.5 ppt highest, found in 4 of 6 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 EPA’s new limit, which takes effect in 20292

PFOA

Comes from the source

Above EPA’s new limit (2029)

7.6ppt

Highest sample, Aug. 25, 2026; found in 6 of 6

2026 average: 6.9 ppt

The highest sample was 7.6 ppt, about twice 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 5.6 ppt, for the year to Sept. 30, 2026: below Pennsylvania’s limit of 14 ppt and above EPA’s new limit of 4.0 ppt. In 2026, the latest year on file, its three samples averaged 6.9 ppt.

What handles it

PFOS

Comes from the source

Above EPA’s new limit (2029)

6.8ppt

Highest sample, May 12, 2026; found in 6 of 6

2026 average: 5.9 ppt

The highest sample was 6.8 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 4.8 ppt, for the year to Sept. 30, 2026: 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 three samples averaged 5.9 ppt.

What handles it

Below EPA’s limits3

Nitrate

Comes from the source

Below EPA’s limits

8.1ppm

Highest sample; found in 26 of 26

2026 average: 5.7 ppm

The highest sample, in 2024, was 8.1 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its three samples averaged 5.7 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 7.9 ppm, in 2017.

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

2.7ppt

Highest sample, May 12, 2026; found in 6 of 6

2026 average: 2.7 ppt

The highest sample was 2.7 ppt, below EPA’s new limit of 10 ppt, which takes effect in 2029. Averaged over four quarters at one entry point, the way EPA’s limit is judged, the highest was 2.3 ppt, for the year to Sept. 30, 2026: below EPA’s new limit of 10 ppt. In 2026, the latest year on file, its three samples averaged 2.7 ppt.

What handles it

PFBS

Comes from the source

Below EPA’s limits

2.5ppt

Highest sample, Aug. 25, 2026; found in 4 of 6

2026 average: 1.6 ppt

The highest sample was 2.5 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 three samples averaged 1.6 ppt.

What handles it

Also found, with no federal limit

EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.

CompoundHighest sampleFound inCertification claim
PFHxA3.2 ppt2 of 2None covers it
PFHpA1.2 ppt2 of 2NSF/ANSI 53: Total PFAS Reduction
18 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

From routine monitoring

  • Arsenic
  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)
  • Total trihalomethanes (TTHM)
  • Uranium

PFAS, from Pennsylvania’s own monitoring

  • 11Cl-PF3OUdS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • NEtFOSAA
  • NMeFOSAA
  • PFDA
  • PFDoA
  • PFNA
  • PFTA
  • PFTrDA
  • PFUnA

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: PFOA Reduction, PFOS Reduction

    For: PFOA, PFOS

    Other certifiers’ wording: Total PFAS Reduction; Perfluorooctanoic Acid (PFOA); Perfluorooctane Sulfonate (PFOS)

  • NSF/ANSI 58

    Claims: Perfluorooctanoic Acid (PFOA), Perfluorooctane Sulfonate (PFOS)

    For: PFOA, PFOS

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

The best water filters for PFAS, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 20 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Nitrate, arsenic, chromium (total), fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and uranium results here are Pennsylvania’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arbour Court’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 June 15, 2020 to Sept. 17, 2026; Pennsylvania’s PFAS results run from March 12, 2025 to Aug. 25, 2026.

Testing your own tap

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

  • H.O. Thompson Testing Lab

    Parkesburg, PA · about 17 miles

    Certified for bacteria

    (610) 593-5030

  • Batta Laboratories LLC

    Newark, DE · about 20 miles

    Certified for asbestos

    (302) 737-3376

  • Brandywine Science Center

    Kennett Square, PA · about 21 miles

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

    (610) 444-9850

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 PA1150213. Rebuilt from EPA data on Oct. 18, 2026.

Also in Chester County

All Pennsylvania utilities

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