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.
463
health-based violations
1,061
violations on file
40
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Unaddressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Unaddressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Unaddressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| MCL | Health-based | Resolved | 2025-01-01 → 2025-03-31 |
| TT | Health-based | Unaddressed | 2024-10-17 |
| TT | Health-based | Unaddressed | 2024-10-17 |
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 | 2545 µg/L 196% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 3900 µg/L | 112/115 | SYR4 | 2012–2019 |
| Lead | 22.3 µg/L 149% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 76 µg/L | 78/115 | SYR4 | 2012–2019 |
| Bromodichloromethane | 26.46 µg/L No EPA limit set
worst single sample: 43.9 µg/L | 57/61 | SYR4 | 2012–2019 |
| Chloroform | 188.24 µg/L No EPA limit set
worst single sample: 251 µg/L | 57/61 | SYR4 | 2012–2019 |
| TTHM | 200.75 µg/L 251% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 284.5 µg/L | 51/55 | SYR4 | 2012–2019 |
| Dibromochloromethane | 8.064 µg/L No EPA limit set
worst single sample: 8.86 µg/L | 49/61 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 129.42 µg/L 216% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 192 µg/L | 49/55 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 120.85 µg/L No EPA limit set
worst single sample: 123 µg/L | 44/55 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 62.255 µg/L No EPA limit set
worst single sample: 77.4 µg/L | 42/55 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 14.87 µg/L No EPA limit set
worst single sample: 16 µg/L | 22/55 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.6 µg/L No EPA limit set
worst single sample: 4 µg/L | 17/55 | SYR4 | 2012–2019 |
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Nitrate | 422 µg/L 4.2% of the EPA limit 10000 µg/L | 16/18 | SYR4 | 2012–2019 |
| Barium | 67.9 µg/L 3.4% of the EPA limit 2000 µg/L
worst single sample: 70 µg/L | 8/8 | SYR4 | 2012–2019 |
| Fluoride | 345.55 µg/L 8.6% of the EPA limit 4000 µg/L
worst single sample: 390 µg/L | 8/8 | SYR4 | 2012–2019 |
| Bromoform | 1.77 µg/L No EPA limit set
worst single sample: 1.88 µg/L | 6/61 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.66 µg/L No EPA limit set
worst single sample: 1.7 µg/L | 5/55 | SYR4 | 2012–2019 |
| Cyanide | 187.37 µg/L 94% of the EPA limit 200 µg/L
worst single sample: 209 µg/L | 4/15 | SYR4 | 2014–2019 |
| Arsenic | 1.5369 µg/L 15% of the EPA limit 10 µg/L
worst single sample: 1.6 µg/L | 3/8 | SYR4 | 2012–2019 |
| Chromium | 10.51 µg/L 11% of the EPA limit 100 µg/L
worst single sample: 11.5 µg/L | 3/8 | SYR4 | 2012–2019 |
| Selenium | 4.5125 µg/L 9% of the EPA limit 50 µg/L
worst single sample: 4.65 µg/L | 2/8 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2015 |
| Gross Beta Particle Activity | 5.3 pCi/L No EPA limit set | 1/2 | SYR4 | 2012–2015 |
| Hexachlorocyclopentadiene | 0.1000 µg/L 0.2% of the EPA limit 50 µg/L | 1/7 | SYR4 | 2012–2019 |
55 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Slc Wsc
Is Slc Wsc tap water safe to drink?
EPA monitoring detected 24 contaminants in Slc 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 Slc Wsc's water?
EPA monitoring detected Copper, Lead, Bromodichloromethane, Chloroform, TTHM, and others. The full list with the level and data source for each is above.
How many people does Slc Wsc serve?
Slc Wsc reports serving 1,749 people in Texas, per its EPA record.
Has Slc Wsc had any water quality violations?
The EPA has 1061 violations on file for Slc Wsc, of which 463 are health-based (a contaminant limit or required treatment was breached) and 40 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.