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.
56
health-based violations
93
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
| MCL | Health-based | Resolved | 2016-07-01 → 2016-09-30 |
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 | 1420 µg/L 109% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 3100 µg/L | 117/125 | SYR4 | 2013–2019 |
| Lead | 6.036 µg/L 40% of the EPA limit 15 µg/L
worst single sample: 13 µg/L | 55/125 | SYR4 | 2013–2019 |
| Bromoform | 42.06 µg/L No EPA limit set
worst single sample: 84.5 µg/L | 44/44 | SYR4 | 2012–2019 |
| Dibromochloromethane | 28.94 µg/L No EPA limit set
worst single sample: 60.4 µg/L | 43/44 | SYR4 | 2012–2019 |
| Bromodichloromethane | 39.79 µg/L No EPA limit set
worst single sample: 61.7 µg/L | 32/44 | SYR4 | 2012–2019 |
| Nitrate | 723.8 µg/L 7.2% of the EPA limit 10000 µg/L
worst single sample: 990 µg/L | 32/32 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 16.28 µg/L No EPA limit set
worst single sample: 19.8 µg/L | 29/29 | SYR4 | 2012–2019 |
| TTHM | 187.2 µg/L 234% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 224 µg/L | 29/30 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 144.72 µg/L 241% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 211 µg/L | 29/29 | SYR4 | 2012–2019 |
| Chloroform | 73.625 µg/L No EPA limit set
worst single sample: 117.7 µg/L | 28/44 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 100.9 µg/L No EPA limit set
worst single sample: 107.1 µg/L | 21/29 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 83.61 µg/L No EPA limit set
worst single sample: 90.9 µg/L | 19/29 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 4.42 µg/L No EPA limit set
worst single sample: 4.7 µg/L | 8/29 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 7/7 | LCR | 2025 |
| Fluoride | 1715 µg/L 43% of the EPA limit 4000 µg/L
worst single sample: 1770 µg/L | 6/6 | SYR4 | 2012–2018 |
| Atrazine | 0.1685 µg/L 5.6% of the EPA limit 3 µg/L
worst single sample: 0.1700 µg/L | 4/12 | SYR4 | 2014–2019 |
| Barium | 49.135 µg/L 2.5% of the EPA limit 2000 µg/L
worst single sample: 52.3 µg/L | 4/4 | SYR4 | 2014–2018 |
| Monochloroacetic Acid | 12.595 µg/L No EPA limit set
worst single sample: 12.7 µg/L | 4/29 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 253.5 µg/L 2.5% of the EPA limit 10000 µg/L
worst single sample: 270 µg/L | 4/4 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.7850 µg/L 0% of the EPA limit 10000 µg/L
worst single sample: 0.8000 µg/L | 4/15 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 3/3 | SYR4 | 2012–2018 |
| Arsenic | 6.455 µg/L 65% of the EPA limit 10 µg/L
worst single sample: 6.6 µg/L | 2/4 | SYR4 | 2014–2018 |
| Dalapon | 2.085 µg/L 1% of the EPA limit 200 µg/L
worst single sample: 2.1 µg/L | 2/32 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 0.9450 µg/L 16% of the EPA limit 6 µg/L
worst single sample: 0.9600 µg/L | 2/12 | SYR4 | 2014–2019 |
| Selenium | 22.67 µg/L 45% of the EPA limit 50 µg/L
worst single sample: 23.2 µg/L | 2/4 | SYR4 | 2014–2018 |
| Cyanide | 80 µg/L 40% of the EPA limit 200 µg/L | 1/4 | SYR4 | 2014–2017 |
| Gross Beta Particle Activity | 5.6 pCi/L No EPA limit set | 1/4 | SYR4 | 2012–2018 |
52 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Mountain Wsc
Is Mountain Wsc tap water safe to drink?
EPA monitoring detected 27 contaminants in Mountain 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 Mountain Wsc's water?
EPA monitoring detected Copper, Lead, Bromoform, Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Mountain Wsc serve?
Mountain Wsc reports serving 2,400 people in Texas, per its EPA record.
Has Mountain Wsc had any water quality violations?
The EPA has 93 violations on file for Mountain Wsc, of which 56 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.