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.
19
health-based violations
455
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2024-11-01 → 2024-11-30 |
| TT | Health-based | Resolved | 2024-11-01 → 2024-11-30 |
| TT | Health-based | Resolved | 2024-11-01 → 2024-11-30 |
| TT | Health-based | Resolved | 2024-11-01 → 2024-11-30 |
| MCL | Health-based | Resolved | 2017-07-01 → 2017-07-31 |
| MCL | Health-based | Resolved | 2017-07-01 → 2017-07-31 |
| MCL | Health-based | Resolved | 2017-07-01 → 2017-07-31 |
| MCL | Health-based | Resolved | 2017-07-01 → 2017-07-31 |
| MCL | Health-based | Resolved | 2013-09-01 → 2013-09-30 |
| MCL | Health-based | Resolved | 2013-09-01 → 2013-09-30 |
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 |
|---|---|---|---|---|
| Chlorite | 590 µg/L 59% of the EPA limit 1000 µg/L
worst single sample: 810 µg/L | 1021/1031 | SYR4 | 2017–2019 |
| Nitrate | 4700 µg/L 47% of the EPA limit 10000 µg/L
worst single sample: 5000 µg/L | 426/432 | SYR4 | 2012–2019 |
| TTHM | 78.56 µg/L 98% of the EPA limit 80 µg/L
worst single sample: 137.7 µg/L | 408/408 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 55.28 µg/L 92% of the EPA limit 60 µg/L
worst single sample: 130.2 µg/L | 397/406 | SYR4 | 2012–2019 |
| Chloroform | 47.3 µg/L No EPA limit set
worst single sample: 83.1 µg/L | 265/265 | SYR4 | 2017–2019 |
| Copper | 458 µg/L 35% of the EPA limit 1300 µg/L
worst single sample: 910 µg/L | 153/178 | SYR4 | 2013–2019 |
| Bromodichloromethane | 17.5 µg/L No EPA limit set
worst single sample: 20 µg/L | 145/148 | SYR4 | 2017–2019 |
| Dichloroacetic Acid | 22.8 µg/L No EPA limit set
worst single sample: 64.6 µg/L | 143/146 | SYR4 | 2017–2019 |
| Trichloroacetic Acid | 25.71 µg/L No EPA limit set
worst single sample: 61.2 µg/L | 143/146 | SYR4 | 2017–2019 |
| Dibromochloromethane | 6.105 µg/L No EPA limit set
worst single sample: 8.6 µg/L | 140/148 | SYR4 | 2017–2019 |
| Barium | 183.2 µg/L 9.2% of the EPA limit 2000 µg/L
worst single sample: 512 µg/L | 89/91 | SYR4 | 2012–2019 |
| Chromium | 8.46 µg/L 8.5% of the EPA limit 100 µg/L
worst single sample: 12 µg/L | 85/91 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 3.3 µg/L 66% of the EPA limit 5 µg/L
worst single sample: 4.4 µg/L | 81/255 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.2 µg/L No EPA limit set
worst single sample: 3.1 µg/L | 61/146 | SYR4 | 2017–2019 |
| Lead | 15.1 µg/L 101% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 171 µg/L | 39/178 | SYR4 | 2013–2019 |
| Selenium | 2.315 µg/L 4.6% of the EPA limit 50 µg/L
worst single sample: 2.5 µg/L | 38/91 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.595 µg/L No EPA limit set
worst single sample: 4.4 µg/L | 28/146 | SYR4 | 2017–2019 |
| Bromoform | 1.075 µg/L No EPA limit set
worst single sample: 1.3 µg/L | 26/148 | SYR4 | 2017–2019 |
| Trichloroethylene | 2.225 µg/L 45% of the EPA limit 5 µg/L
worst single sample: 2.3 µg/L | 16/255 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.71 µg/L No EPA limit set
worst single sample: 2.2 µg/L | 15/146 | SYR4 | 2017–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Fluoride | 588 µg/L 15% of the EPA limit 4000 µg/L
worst single sample: 600 µg/L | 13/91 | SYR4 | 2012–2019 |
| Arsenic | 1.3 µg/L 13% of the EPA limit 10 µg/L | 5/91 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 0.9850 µg/L 1.4% of the EPA limit 70 µg/L
worst single sample: 1 µg/L | 4/255 | SYR4 | 2012–2019 |
| 1,1,1-Trichloroethane | 0.5000 µg/L 0.3% of the EPA limit 200 µg/L | 2/255 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 1.474 µg/L 25% of the EPA limit 6 µg/L
worst single sample: 1.49 µg/L | 2/55 | SYR4 | 2012–2019 |
| Xylenes, Total | 2.795 µg/L 0% of the EPA limit 10000 µg/L
worst single sample: 2.9 µg/L | 2/255 | SYR4 | 2012–2019 |
| Lithium | 15.7 µg/L No EPA limit set | 2/50 | UCMR-5 | 2024 |
| 2,4-D | 1.5 µg/L 2.1% of the EPA limit 70 µg/L | 1/35 | SYR4 | 2012–2019 |
| Atrazine | 0.2800 µg/L 9.3% of the EPA limit 3 µg/L | 1/49 | SYR4 | 2012–2019 |
| Combined Uranium | 12.9779 µg/L 43% of the EPA limit 30 µg/L | 1/6 | SYR4 | 2012–2017 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L | 1/216 | SYR4 | 2012–2019 |
| Toluene | 0.7000 µg/L 0.1% of the EPA limit 1000 µg/L | 1/255 | SYR4 | 2012–2019 |
68 contaminants tested, none detected
1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Aqua Pa Main
Is Aqua Pa Main tap water safe to drink?
EPA monitoring detected 42 contaminants in Aqua Pa Main'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 Aqua Pa Main's water?
EPA monitoring detected Chlorite, Nitrate, TTHM, Total Haloacetic Acids (HAA5), Chloroform, and others. The full list with the level and data source for each is above.
How many people does Aqua Pa Main serve?
Aqua Pa Main reports serving 822,600 people in Pennsylvania, per its EPA record.
Has Aqua Pa Main had any water quality violations?
The EPA has 455 violations on file for Aqua Pa Main, of which 19 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.