Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
23
health-based violations
205
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-04-01 → 1994-06-30 |
| MCL | Health-based | Resolved | 1994-01-01 → 1994-01-31 |
| MCL | Health-based | Resolved | 1994-01-01 → 1994-01-31 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
Other contaminants detected
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 4340 µg/L 43% of the EPA limit 10000 µg/L
worst single sample: 4810 µg/L | 492/496 | SYR4 | 2012–2019 |
| Chloroform | 39.9 µg/L No EPA limit set
worst single sample: 55.5 µg/L | 378/378 | SYR4 | 2012–2019 |
| TTHM | 52.6 µg/L 66% of the EPA limit 80 µg/L
worst single sample: 72.1 µg/L | 311/311 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.603 µg/L No EPA limit set
worst single sample: 7.96 µg/L | 310/310 | SYR4 | 2012–2019 |
| Bromodichloromethane | 10.685 µg/L No EPA limit set
worst single sample: 12.5 µg/L | 284/284 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 18.25 µg/L 30% of the EPA limit 60 µg/L
worst single sample: 28.4 µg/L | 276/278 | SYR4 | 2012–2019 |
| Copper | 966.4 µg/L 74% of the EPA limit 1300 µg/L
worst single sample: 1254 µg/L | 129/129 | SYR4 | 2013–2019 |
| Bromoform | 1.988 µg/L No EPA limit set
worst single sample: 6.55 µg/L | 113/301 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 0.9204 µg/L 18% of the EPA limit 5 µg/L
worst single sample: 1.02 µg/L | 69/397 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.5 µg/L No EPA limit set
worst single sample: 16.4 µg/L | 41/41 | SYR4 | 2018–2019 |
| Trichloroacetic Acid | 8.81 µg/L No EPA limit set
worst single sample: 11.1 µg/L | 41/41 | SYR4 | 2018–2019 |
| Barium | 393.6 µg/L 20% of the EPA limit 2000 µg/L
worst single sample: 510 µg/L | 37/39 | SYR4 | 2012–2018 |
| Trichloroethylene | 1.2035 µg/L 24% of the EPA limit 5 µg/L
worst single sample: 1.27 µg/L | 34/399 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 4.01 µg/L 5.7% of the EPA limit 70 µg/L
worst single sample: 4.34 µg/L | 31/397 | SYR4 | 2012–2019 |
| Lead | 22.625 µg/L 151% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 33 µg/L | 26/129 | SYR4 | 2013–2019 |
| Combined Uranium | 5.28354 µg/L 18% of the EPA limit 30 µg/L
worst single sample: 5.4981 µg/L | 23/23 | SYR4 | 2014–2017 |
| Arsenic | 5.57 µg/L 56% of the EPA limit 10 µg/L
worst single sample: 6 µg/L | 22/39 | SYR4 | 2012–2018 |
| Lead | 0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Chromium | 2.45 µg/L 2.5% of the EPA limit 100 µg/L
worst single sample: 3 µg/L | 12/39 | SYR4 | 2012–2018 |
| Lithium | 23.6 µg/L No EPA limit set | 8/12 | UCMR-5 | 2025 |
| Dibromoacetic Acid | 1.5855 µg/L No EPA limit set
worst single sample: 1.59 µg/L | 4/41 | SYR4 | 2018–2019 |
| Fluoride | 123.7 µg/L 3.1% of the EPA limit 4000 µg/L
worst single sample: 124 µg/L | 4/46 | SYR4 | 2012–2018 |
| Antimony, Total | 0.7000 µg/L 12% of the EPA limit 6 µg/L | 1/38 | SYR4 | 2012–2018 |
| Di(2-ethylhexyl) Adipate | 0.6000 µg/L 0.2% of the EPA limit 400 µg/L | 1/62 | SYR4 | 2012–2019 |
| Toluene | 2.29 µg/L 0.2% of the EPA limit 1000 µg/L | 1/397 | SYR4 | 2012–2019 |
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, TotalO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about North Penn Water Authority
Is North Penn Water Authority tap water safe to drink?
EPA monitoring detected 28 contaminants in North Penn Water Authority's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in North Penn Water Authority's water?
EPA monitoring detected Nitrate, Chloroform, TTHM, Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does North Penn Water Authority serve?
North Penn Water Authority reports serving 91,941 people in Pennsylvania, per its EPA record.
Has North Penn Water Authority had any water quality violations?
The EPA has 205 violations on file for North Penn Water Authority, of which 23 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.