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.
103
health-based violations
140
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2022-07-01 → 2022-09-30 |
| MCL | Health-based | Resolved | 2022-07-01 → 2022-09-30 |
| MCL | Health-based | Resolved | 2022-07-01 → 2022-09-30 |
| MCL | Health-based | Resolved | 2022-07-01 → 2022-09-30 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
| TT | Health-based | Resolved | 2011-03-01 → 2011-03-31 |
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 |
|---|---|---|---|---|
| Copper | 168.4 µg/L 13% of the EPA limit 1300 µg/L
worst single sample: 1570 µg/L | 65/65 | SYR4 | 2013–2019 |
| Bromodichloromethane | 27.295 µg/L No EPA limit set
worst single sample: 143.2 µg/L | 64/65 | SYR4 | 2012–2019 |
| Dibromochloromethane | 25.47 µg/L No EPA limit set
worst single sample: 144.3 µg/L | 64/65 | SYR4 | 2012–2019 |
| Bromoform | 22.08 µg/L No EPA limit set
worst single sample: 25.6 µg/L | 63/65 | SYR4 | 2012–2019 |
| Chloroform | 18.26 µg/L No EPA limit set
worst single sample: 30.5 µg/L | 63/65 | SYR4 | 2012–2019 |
| TTHM | 77.28 µg/L 97% of the EPA limit 80 µg/L
worst single sample: 106 µg/L | 57/57 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 13.8 µg/L No EPA limit set
worst single sample: 20.4 µg/L | 56/57 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 16.925 µg/L No EPA limit set
worst single sample: 37 µg/L | 56/57 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.725 µg/L 58% of the EPA limit 60 µg/L
worst single sample: 101 µg/L | 56/57 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6.17 µg/L No EPA limit set
worst single sample: 24.3 µg/L | 54/57 | SYR4 | 2012–2019 |
| Chlorite | 812.2 µg/L 81% of the EPA limit 1000 µg/L
worst single sample: 959 µg/L | 29/45 | SYR4 | 2013–2014 |
| Lead | 1.409 µg/L 9.4% of the EPA limit 15 µg/L
worst single sample: 3.07 µg/L | 22/65 | SYR4 | 2013–2019 |
| Nitrate | 300 µg/L 3% of the EPA limit 10000 µg/L | 18/18 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 30.12 µg/L No EPA limit set
worst single sample: 31.8 µg/L | 13/57 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2025 |
| Fluoride | 486 µg/L 12% of the EPA limit 4000 µg/L
worst single sample: 500 µg/L | 8/8 | SYR4 | 2012–2019 |
| Barium | 190.1 µg/L 9.5% of the EPA limit 2000 µg/L
worst single sample: 191 µg/L | 7/7 | SYR4 | 2013–2019 |
| Selenium | 4.65 µg/L 9.3% of the EPA limit 50 µg/L
worst single sample: 4.7 µg/L | 6/7 | SYR4 | 2013–2019 |
| Xylenes, Total | 1.1 µg/L 0% of the EPA limit 10000 µg/L | 4/8 | SYR4 | 2012–2019 |
| Lithium | 77 µg/L No EPA limit set | 4/4 | UCMR-5 | 2024 |
| Cyanide | 137 µg/L 69% of the EPA limit 200 µg/L
worst single sample: 140 µg/L | 3/8 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.83 µg/L No EPA limit set
worst single sample: 4 µg/L | 3/57 | SYR4 | 2012–2019 |
| Atrazine | 0.2815 µg/L 9.4% of the EPA limit 3 µg/L
worst single sample: 0.2900 µg/L | 2/13 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 1.566 µg/L 26% of the EPA limit 6 µg/L
worst single sample: 1.6 µg/L | 2/13 | SYR4 | 2012–2019 |
| Arsenic | 2.1 µg/L 21% of the EPA limit 10 µg/L | 1/7 | SYR4 | 2013–2019 |
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, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Olmito Wsc
Is Olmito Wsc tap water safe to drink?
EPA monitoring detected 30 contaminants in Olmito 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 Olmito Wsc's water?
EPA monitoring detected Copper, Bromodichloromethane, Dibromochloromethane, Bromoform, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Olmito Wsc serve?
Olmito Wsc reports serving 8,952 people in Texas, per its EPA record.
Has Olmito Wsc had any water quality violations?
The EPA has 140 violations on file for Olmito Wsc, of which 103 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.