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Bcwsa Solebury

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
2,100 people
Connections
532
Water source
Groundwater
Based in
Warrington, PA
County
Bucks
Owner
Local government
The ZIP code it serves

18938

The short answer

1 result is above EPA’s legal limit, 2 more are above EPA’s new limit, which takes effect in 2029, and 2 more are above the health goal. The worst: PFOA, above Pennsylvania’s limit. 1 health-based violation since 2016.

What handles it

What was found

PFAS: Pennsylvania’s own results under its PFAS rule, entry point samples taken from Feb. 20, 2024 to Aug. 17, 2026.

Uranium, arsenic, total trihalomethanes (TTHM), nitrate, haloacetic acids (HAA5), chromium (total) and fluoride: Pennsylvania’s own results, samples taken from Jan. 17, 2020 to Aug. 20, 2026, with EPA’s 2012 to 2019 file for earlier years.

PFAS: PFOA, PFOS, PFNA, PFHxS 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 Pennsylvania’s limit26 ppt highest, found in 26 of 29 samples. Details
PFOS4.0 pptAbove EPA’s new limit (2029)47 ppt highest, found in 26 of 30 samples. Details
PFHxS10 pptBelow EPA’s limits2.0 ppt highest, found in 5 of 22 samples. Details
PFNA10 pptAbove EPA’s new limit (2029)20 ppt highest, found in 8 of 22 samples. Details
HFPO-DA (GenX)10 pptNot foundNot found in any of 19 samples
PFBSIndex onlyBelow EPA’s limits10 ppt highest, found in 20 of 23 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

PFOA

Comes from the source

Above Pennsylvania’s limit

26ppt

Highest sample, Sept. 17, 2024; found in 26 of 29

2026 average: 3.3 ppt

The highest sample was 26 ppt, about 6.5 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 March 31, 2025: above Pennsylvania’s limit of 14 ppt and above EPA’s new limit of 4.0 ppt. Pennsylvania recorded a violation of its limit for PFOA here, dated April 23, 2025, on a running average of 15 ppt. In 2026, the latest year on file, its six samples averaged 3.3 ppt.

What handles it

Above EPA’s new limit, which takes effect in 20292

PFOS

Comes from the source

Above EPA’s new limit (2029)

47ppt

Highest sample, Sept. 17, 2024; found in 26 of 30

2026 average: 1.7 ppt

The highest sample was 47 ppt, about 12 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 14.1 ppt, for the year to Dec. 31, 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 six samples averaged 1.7 ppt.

What handles it

PFNA

Comes from the source

Above EPA’s new limit (2029)

20ppt

Highest sample, Sept. 17, 2024; found in 8 of 22

2026 average: 0.42 ppt

The highest sample was 20 ppt, about twice EPA’s new limit of 10 ppt, which takes effect in 2029. EPA’s health goal is 10 ppt. Compliance will be judged on a running annual average, not one sample. Averaged over four quarters at one entry point, the way EPA’s limit is judged, the highest was 3.6 ppt, for the year to June 30, 2025: below EPA’s new limit of 10 ppt. In 2026, the latest year on file, its six samples averaged 0.42 ppt.

What handles it

Above the health goal2

Uranium

Comes from the source

Above the health goal

15.6ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 15.6 ppb, in 2025: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 24.9 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 16.5 ppb, in 2019.

What handles it

Arsenic

Comes from the source

Above the health goal

4.3ppb

Highest yearly average, 2020 to 2026

2026 average: 2.2 ppb

Averaged by year, the highest was 4.3 ppb, in 2024: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 11 ppb. In 2026, the latest year on file, its six samples averaged 2.2 ppb. EPA recorded no violation for arsenic at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 7.3 ppb, in 2015.

What handles it

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

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

27.6ppb

Highest yearly average, 2020 to 2026

2026, one sample: 22 ppb

Averaged by year, the highest was 27.6 ppb, in 2025, below EPA’s legal limit of 80 ppb. In 2026, the latest year on file, its one sample was 22 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 22.7 ppb, in 2018.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

3.0ppm

Highest sample; found in 21 of 21

2026 average: 2.3 ppm

The highest sample, in 2022, was 3.0 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its three samples averaged 2.3 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 3.5 ppm, in 2016.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

12.8ppb

Highest yearly average, 2020 to 2026

2026, one sample: 7.9 ppb

Averaged by year, the highest was 12.8 ppb, in 2023, below EPA’s legal limit of 60 ppb. In 2026, the latest year on file, its one sample was 7.9 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 9.9 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

PFHxS

Comes from the source

Below EPA’s limits

2.0ppt

Highest sample, Dec. 19, 2024; found in 5 of 22

2026: not found

The highest sample was 2.0 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 0.91 ppt, for the year to Sept. 30, 2025: below EPA’s new limit of 10 ppt. In 2026, the latest year on file, it wasn’t found in any of its six samples.

What handles it

PFBS

Comes from the source

Below EPA’s limits

10ppt

Highest sample, April 23, 2025; found in 20 of 23

2026 average: 2.3 ppt

The highest sample was 10 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 six samples averaged 2.3 ppt.

What handles it

3 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

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

    For: PFOA, PFOS, PFNA, Arsenic

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

  • NSF/ANSI 58

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

    For: PFOA, PFOS, Uranium, Arsenic

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

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

The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Groundwater RuleRequired treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR)Feb. 1, 2020 to Feb. 29, 2020—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 7 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Uranium, arsenic, total trihalomethanes (TTHM), nitrate, haloacetic acids (HAA5), chromium (total) and fluoride results here are Pennsylvania’s own from 2020 on, with EPA’s national file for 2012 to 2019. Bcwsa Solebury’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 Jan. 17, 2020 to Aug. 20, 2026; Pennsylvania’s PFAS results run from Feb. 20, 2024 to Aug. 17, 2026.

Testing your own tap

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

  • Pace Analytical Services, LLC - Ewing

    Ewing, NJ · about 11 miles

    Certified for bacteria

    (609) 737-3477

  • Eurofins Philadelphia - Horsham

    Horsham, PA · about 14 miles

    Certified for bacteria

    (215) 355-3900

  • Criterion Laboratories Inc

    Bensalem, PA · about 18 miles

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

    (215) 244-1300

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 PA1090129. Rebuilt from EPA data on Oct. 18, 2026.