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.
28
health-based violations
72
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Resolved | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Resolved | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Resolved | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Resolved | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Resolved | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Resolved | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Resolved | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Resolved | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Resolved | 2025-04-01 → 2025-06-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0100 µg/L | 8/20 | 2023 |
| PFHXS | 0.0070 µg/L | 7/20 | 2023 |
| PFOS | 0.0124 µg/L | 7/20 | 2023 |
| Pfpea | 0.0091 µg/L | 7/20 | 2023 |
| Pfhxa | 0.0087 µg/L | 4/20 | 2023 |
| Pfba | 0.0074 µg/L | 3/20 | 2023 |
| PFNA | 0.0243 µg/L | 3/20 | 2023 |
| Pfhpa | 0.0043 µg/L | 1/20 | 2023 |
| PFOA | 0.0059 µg/L | 1/20 | 2023 |
| Pfuna | 0.0027 µg/L | 1/20 | 2023 |
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 |
|---|---|---|---|---|
| Copper | 290 µg/L 22% of the EPA limit 1300 µg/L
worst single sample: 600 µg/L | 181/194 | SYR4 | 2013–2019 |
| Bromodichloromethane | 24.02 µg/L No EPA limit set
worst single sample: 33.2 µg/L | 148/180 | SYR4 | 2012–2019 |
| Chloroform | 18.9 µg/L No EPA limit set
worst single sample: 28.3 µg/L | 147/180 | SYR4 | 2012–2019 |
| Nitrate | 2562.5 µg/L 26% of the EPA limit 10000 µg/L
worst single sample: 4440 µg/L | 146/160 | SYR4 | 2012–2019 |
| Dibromochloromethane | 22.16 µg/L No EPA limit set
worst single sample: 36.3 µg/L | 137/180 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 21.58 µg/L 36% of the EPA limit 60 µg/L
worst single sample: 35 µg/L | 127/132 | SYR4 | 2012–2019 |
| TTHM | 64.85 µg/L 81% of the EPA limit 80 µg/L
worst single sample: 109 µg/L | 123/132 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 11.6 µg/L No EPA limit set
worst single sample: 22.5 µg/L | 121/132 | SYR4 | 2012–2019 |
| Bromoform | 9.495 µg/L No EPA limit set
worst single sample: 14.6 µg/L | 108/180 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 6.59 µg/L No EPA limit set
worst single sample: 10.5 µg/L | 103/132 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.645 µg/L No EPA limit set
worst single sample: 13 µg/L | 58/132 | SYR4 | 2012–2019 |
| Lead | 4.875 µg/L 33% of the EPA limit 15 µg/L
worst single sample: 20 µg/L | 56/194 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 2287 µg/L 23% of the EPA limit 10000 µg/L
worst single sample: 3130 µg/L | 28/30 | SYR4 | 2012–2015 |
| Barium | 142 µg/L 7.1% of the EPA limit 2000 µg/L
worst single sample: 148 µg/L | 21/21 | SYR4 | 2013–2019 |
| Lithium | 83.8 µg/L No EPA limit set | 17/20 | UCMR-5 | 2023 |
| Fluoride | 1625 µg/L 41% of the EPA limit 4000 µg/L
worst single sample: 1880 µg/L | 16/16 | SYR4 | 2013–2019 |
| Lead | 0.0014 mg/L 9.4% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2025 |
| Xylenes, Total | 142.25 µg/L 1.4% of the EPA limit 10000 µg/L
worst single sample: 161 µg/L | 16/48 | SYR4 | 2012–2019 |
| Nitrite | 185 µg/L 19% of the EPA limit 1000 µg/L
worst single sample: 200 µg/L | 11/30 | SYR4 | 2012–2015 |
| Atrazine | 0.6525 µg/L 22% of the EPA limit 3 µg/L
worst single sample: 0.6600 µg/L | 6/45 | SYR4 | 2012–2019 |
| Cyanide | 117.1 µg/L 59% of the EPA limit 200 µg/L
worst single sample: 130 µg/L | 6/11 | SYR4 | 2013–2019 |
| Ethylbenzene | 28.25 µg/L 4% of the EPA limit 700 µg/L
worst single sample: 30 µg/L | 6/48 | SYR4 | 2012–2019 |
| Selenium | 6.525 µg/L 13% of the EPA limit 50 µg/L
worst single sample: 7.1 µg/L | 6/21 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 2.108 pCi/L 42% of the EPA limit 5 pCi/L
worst single sample: 2.26 pCi/L | 5/6 | SYR4 | 2014–2017 |
| Gross Alpha, Excl. Radon And U | 6.36 pCi/L 42% of the EPA limit 15 pCi/L
worst single sample: 6.7 pCi/L | 5/10 | SYR4 | 2014–2019 |
| Monochloroacetic Acid | 3.735 µg/L No EPA limit set
worst single sample: 3.9 µg/L | 4/132 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.94 µg/L No EPA limit set
worst single sample: 2 µg/L | 3/132 | SYR4 | 2012–2019 |
| Simazine | 0.1480 µg/L 3.7% of the EPA limit 4 µg/L
worst single sample: 0.1500 µg/L | 3/45 | SYR4 | 2012–2019 |
| Arsenic | 2.665 µg/L 27% of the EPA limit 10 µg/L
worst single sample: 2.7 µg/L | 2/21 | SYR4 | 2013–2019 |
| Chromium | 4.0695 µg/L 4.1% of the EPA limit 100 µg/L
worst single sample: 4.16 µg/L | 2/21 | SYR4 | 2013–2019 |
| Combined Uranium | 2.3 µg/L 7.7% of the EPA limit 30 µg/L | 1/10 | SYR4 | 2014–2019 |
| Gross Beta Particle Activity | 4.4 pCi/L No EPA limit set | 1/12 | SYR4 | 2013–2019 |
67 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPfpesPftaPftrdaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Manville Wsc
Is Manville Wsc tap water safe to drink?
EPA monitoring detected 42 contaminants in Manville Wsc'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 Manville Wsc's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Nitrate, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Manville Wsc serve?
Manville Wsc reports serving 39,648 people in Texas, per its EPA record.
Has Manville Wsc had any water quality violations?
The EPA has 72 violations on file for Manville Wsc, of which 28 are health-based (a contaminant limit or required treatment was breached) and 1 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.