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Community Water System · PWS PA1090005

Aqua PA Chalfont

Bryn Mawr, Pennsylvania 19010 - drinking water served from groundwater sources to 5,900 people, tracked in EPA SDWIS and UCMR5.

5,900
People served
116
EPA violations
8
Health-based
8 PFAS
UCMR5 result

The verdict

EPA records 116 drinking-water violations at Aqua PA Chalfont, 7% of them health-based - below the Pennsylvania per-system average, and UCMR5 testing detected 8 PFAS compounds.

116
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
5,900
People served by this system
8
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aqua PA Chalfont

Aqua PA Chalfont is a private-owned community water system that delivers drinking water to 5,900 residents in Bryn Mawr, Pennsylvania (Bucks County) through 2,491 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 116 total violations for this system , of which 8 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 101 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Nitrate, recorded in 9 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 8 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 19 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%).

Aqua PA Chalfont's 116 violations sit below the Pennsylvania average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
5,900
Total Violations
116
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
2,491
County
Bucks
School/Daycare
No
MCL Violations
2
Monitoring Violations
101
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 9 1994
Public Notice Other 6 2019
Groundwater Rule TT 6 2019
Radium-226 MR 4 2023
Radium-228 MR 4 2023
Toxaphene MR 3 1988
Methoxychlor MR 3 1988
Endrin MR 3 1988
Fluoride MR 3 1988
BHC-GAMMA MR 3 1988
Chromium MR 3 1988
Cadmium MR 3 1988
Barium MR 3 1988
2,4-D MR 3 1988
Selenium MR 3 1988
Mercury MR 3 1988
2,4,5-TP MR 3 1988
Lead and Copper Rule MR 3 1997
Arsenic MR 3 1988
1,2,4-Trichlorobenzene MR 2 2000
cis-1,2-Dichloroethylene MR 2 2000
Xylenes, Total MR 2 2000
p-Dichlorobenzene MR 2 2000
trans-1,2-Dichloroethylene MR 2 2000
1,2-Dichloroethane MR 2 2000
Carbon tetrachloride MR 2 2000
Tetrachloroethylene MR 2 2000
Toluene MR 2 2000
Gross Alpha, Excl. Radon and U MR 2 2005
Tetrachloroethylene MCL 2 1998

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 24 of 174 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeS 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 8/19/2024 <7.00 ppt 7.00 ppt Not Detected
NFDHA 8/19/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 8/19/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 8/19/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 8/19/2024 4.70 ppt 3.00 ppt Detected
PFMBA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/19/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
PFUnA 8/19/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 8/19/2024 9.00 ppt 5.00 ppt Detected
PFOA 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 8/19/2024 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 8/19/2024 <6.00 ppt 6.00 ppt Not Detected
PFTA 8/19/2024 <8.00 ppt 8.00 ppt Not Detected
PFOA 8/19/2024 7.40 ppt 4.00 ppt Detected
NEtFOSAA 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/19/2024 5.30 ppt 3.00 ppt Detected
PFHpA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/19/2024 6.60 ppt 4.00 ppt Detected
PFDA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/19/2024 3.70 ppt 3.00 ppt Detected
PFUnA 8/19/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/19/2024 <5.00 ppt 5.00 ppt Not Detected
PFPeA 8/19/2024 4.00 ppt 3.00 ppt Detected
NFDHA 8/19/2024 <20.00 ppt 20.00 ppt Not Detected
PFNA 8/19/2024 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 8/19/2024 <2.00 ppt 2.00 ppt Not Detected
PFMBA 8/19/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/19/2024 <4.00 ppt 4.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Aqua PA Chalfont.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PA1090005 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP, Bureau of Safe Drinking Water is the primacy agency that licenses and inspects Aqua PA Chalfont under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP, Bureau of Safe Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Radium-226 MR 4 SDWIS / PA1090005 / 4020
2023 Radium-228 MR 4 SDWIS / PA1090005 / 4030
2019 Public Notice Other 6 SDWIS / PA1090005 / 7500
2019 Groundwater Rule TT 6 SDWIS / PA1090005 / 0700
2005 Gross Alpha, Excl. Radon and U MR 2 SDWIS / PA1090005 / 4000
2000 1,2,4-Trichlorobenzene MR 2 SDWIS / PA1090005 / 2378
2000 cis-1,2-Dichloroethylene MR 2 SDWIS / PA1090005 / 2380
2000 Xylenes, Total MR 2 SDWIS / PA1090005 / 2955
2000 p-Dichlorobenzene MR 2 SDWIS / PA1090005 / 2969
2000 trans-1,2-Dichloroethylene MR 2 SDWIS / PA1090005 / 2979
2000 1,2-Dichloroethane MR 2 SDWIS / PA1090005 / 2980
2000 Carbon tetrachloride MR 2 SDWIS / PA1090005 / 2982
2000 Tetrachloroethylene MR 2 SDWIS / PA1090005 / 2987
2000 Toluene MR 2 SDWIS / PA1090005 / 2991
2000 Benzene MR 2 SDWIS / PA1090005 / 2990

How Aqua PA Chalfont Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Aqua PA Chalfont Pennsylvania avg Federal benchmark
Total violations 116 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection 8 compounds 57.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 5,900 1,640 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Aqua PA Chalfont water safe to drink? ▼
Aqua PA Chalfont (PWS ID: PA1090005) has 116 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 8 PFAS compounds found. This system serves 5,900 people using Groundwater sources.
How many people does Aqua PA Chalfont serve? ▼
Aqua PA Chalfont serves 5,900 people in Bryn Mawr, Pennsylvania. It is a Private-owned system using Groundwater water sources with 2,491 service connections.
What type of violations does Aqua PA Chalfont have? ▼
Aqua PA Chalfont has 116 total violations: 8 health-based violations (MCL exceedances or treatment failures), 101 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aqua PA Chalfont water? ▼
Yes. UCMR5 testing detected 8 PFAS compounds in Aqua PA Chalfont's water supply: PFPeA, PFBA, PFOA, PFBS, PFOS, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Aqua PA Chalfont use? ▼
Aqua PA Chalfont uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.