Community Water System · PWS PA1090005
Aqua PA Chalfont
Operator location Bryn Mawr, Pennsylvania - UCMR5 detected 8 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 116 violations and 5,900 people served.
- 5,900
- People served (this PWS)
- 116
- EPA violations (this PWS)
- 8
- Health-based (this PWS)
- 8 PFAS
- UCMR5 (this PWS)
Aqua PA Chalfont standing, high SDWIS violation third
UCMR5 detected 8 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #6,922 of 29,740 among systems serving 500+.
The verdict
Aqua PA Chalfont sits in the upper third of the sitemap cohort by violation count (116), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (5,900; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 7% (middle-third health share (≤ 23%)). UCMR5 detected 8 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #6,922 of 29,740
- Population · /systems
- #246 of 1,340
- Population · PA
- 116
- Total EPA violations on record
- 7%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
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 |
Violation Count vs. the National Corpus
Aqua PA Chalfont has 116 recorded EPA violations, 76% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 24% carry more. 7% of this system's own violations are health-based (8 of 116), and it ranks #6,922 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
116 Higher than most more violations than 76% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
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 |
UCMR5 PFAS record for Aqua PA Chalfont
Open EPA SDWIS federal reports for PWS PA1090005 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
116 violations · 5,900 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Aqua PA Chalfont
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Pennsylvania compares on the same EPA violation measures. Pennsylvania systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.