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.
13
health-based violations
85
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2005-05-01 → 2005-05-31 |
| MCL | Health-based | Resolved | 2005-05-01 → 2005-05-31 |
| MCL | Health-based | Resolved | 2005-05-01 → 2005-05-31 |
| MCL | Health-based | Archived | 2004-12-01 → 2004-12-31 |
| MCL | Health-based | Archived | 2004-12-01 → 2004-12-31 |
| MCL | Health-based | Archived | 1991-08-01 → 1991-08-31 |
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 |
|---|---|---|---|---|
| Bromoform | 22.025 µg/L No EPA limit set
worst single sample: 53.9 µg/L | 112/140 | SYR4 | 2012–2019 |
| Dibromochloromethane | 19 µg/L No EPA limit set
worst single sample: 42.2 µg/L | 111/140 | SYR4 | 2012–2019 |
| TTHM | 66.45 µg/L 83% of the EPA limit 80 µg/L
worst single sample: 116.9 µg/L | 106/110 | SYR4 | 2012–2019 |
| Nitrate | 296 µg/L 3% of the EPA limit 10000 µg/L
worst single sample: 701 µg/L | 96/98 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 57.475 µg/L 96% of the EPA limit 60 µg/L
worst single sample: 142 µg/L | 96/110 | SYR4 | 2012–2019 |
| Bromodichloromethane | 17.27 µg/L No EPA limit set
worst single sample: 29.8 µg/L | 83/140 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 10 µg/L No EPA limit set
worst single sample: 12.5 µg/L | 83/110 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 36.45 µg/L No EPA limit set
worst single sample: 97.4 µg/L | 76/110 | SYR4 | 2012–2019 |
| Chloroform | 31.3 µg/L No EPA limit set
worst single sample: 55.2 µg/L | 74/140 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 17.8 µg/L No EPA limit set
worst single sample: 28.1 µg/L | 69/110 | SYR4 | 2012–2019 |
| Copper | 140 µg/L 11% of the EPA limit 1300 µg/L
worst single sample: 990 µg/L | 61/68 | SYR4 | 2014–2017 |
| Monobromoacetic Acid | 3.99 µg/L No EPA limit set
worst single sample: 5 µg/L | 52/110 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 5.66 µg/L No EPA limit set
worst single sample: 10.5 µg/L | 45/110 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 18/18 | LCR | 2024 |
| Nitrate-Nitrite | 87.1 µg/L 0.9% of the EPA limit 10000 µg/L
worst single sample: 184 µg/L | 18/18 | SYR4 | 2012–2015 |
| Lead | 17.4 µg/L 116% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 27 µg/L | 17/68 | SYR4 | 2014–2017 |
| Barium | 85.25 µg/L 4.3% of the EPA limit 2000 µg/L
worst single sample: 88 µg/L | 12/12 | SYR4 | 2014–2019 |
| Fluoride | 1354.5 µg/L 34% of the EPA limit 4000 µg/L
worst single sample: 1360 µg/L | 12/12 | SYR4 | 2014–2017 |
| Lithium | 76.3 µg/L No EPA limit set | 10/16 | UCMR-5 | 2024 |
| Chromium | 14.96 µg/L 15% of the EPA limit 100 µg/L
worst single sample: 21 µg/L | 9/12 | SYR4 | 2014–2019 |
| Selenium | 5.56 µg/L 11% of the EPA limit 50 µg/L
worst single sample: 5.7 µg/L | 5/12 | SYR4 | 2014–2019 |
| Arsenic | 1.98 µg/L 20% of the EPA limit 10 µg/L
worst single sample: 2 µg/L | 3/12 | SYR4 | 2014–2019 |
| Thallium, Total | 0.3690 µg/L 18% of the EPA limit 2 µg/L
worst single sample: 0.3700 µg/L | 2/12 | SYR4 | 2014–2019 |
| Cyanide | 8.95 µg/L 4.5% of the EPA limit 200 µg/L | 1/12 | SYR4 | 2014–2017 |
| Di(2-ethylhexyl) Phthalate | 1.5 µg/L 25% of the EPA limit 6 µg/L | 1/18 | SYR4 | 2012–2018 |
78 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Mountain Peak Sud
Is Mountain Peak Sud tap water safe to drink?
EPA monitoring detected 30 contaminants in Mountain Peak Sud'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 Peak Sud's water?
EPA monitoring detected Bromoform, Dibromochloromethane, TTHM, Nitrate, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Mountain Peak Sud serve?
Mountain Peak Sud reports serving 23,988 people in Texas, per its EPA record.
Has Mountain Peak Sud had any water quality violations?
The EPA has 85 violations on file for Mountain Peak Sud, of which 13 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.