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.
12
health-based violations
26
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-04-01 → 2014-06-30 |
| MCL | Health-based | Resolved | 2014-04-01 → 2014-06-30 |
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 |
|---|---|---|---|---|
| Bromodichloromethane | 34.93 µg/L No EPA limit set
worst single sample: 42.5 µg/L | 68/68 | SYR4 | 2012–2019 |
| Chloroform | 69.775 µg/L No EPA limit set
worst single sample: 101 µg/L | 68/68 | SYR4 | 2012–2019 |
| Dibromochloromethane | 46.82 µg/L No EPA limit set
worst single sample: 205 µg/L | 68/68 | SYR4 | 2012–2019 |
| Copper | 742 µg/L 57% of the EPA limit 1300 µg/L
worst single sample: 927 µg/L | 59/63 | SYR4 | 2014–2019 |
| Nitrate | 35.5 µg/L 0.4% of the EPA limit 10000 µg/L
worst single sample: 44 µg/L | 54/64 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 31.64 µg/L No EPA limit set
worst single sample: 39.3 µg/L | 49/49 | SYR4 | 2012–2019 |
| TTHM | 116.4 µg/L 146% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 147.3 µg/L | 49/49 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 84.6 µg/L 141% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 160 µg/L | 49/49 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 41.8 µg/L No EPA limit set
worst single sample: 50.1 µg/L | 49/49 | SYR4 | 2012–2019 |
| Lead | 1.6 µg/L 11% of the EPA limit 15 µg/L
worst single sample: 2.1 µg/L | 24/63 | SYR4 | 2014–2019 |
| Monochloroacetic Acid | 18.395 µg/L No EPA limit set
worst single sample: 94.3 µg/L | 18/49 | SYR4 | 2012–2019 |
| Bromoform | 23.535 µg/L No EPA limit set
worst single sample: 24.9 µg/L | 14/68 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 15.045 µg/L No EPA limit set
worst single sample: 16.2 µg/L | 12/49 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2025 |
| Nitrate-Nitrite | 39.6 µg/L 0.4% of the EPA limit 10000 µg/L
worst single sample: 44 µg/L | 9/12 | SYR4 | 2012–2019 |
| Xylenes, Total | 14.113 µg/L 0.1% of the EPA limit 10000 µg/L
worst single sample: 17.2 µg/L | 8/19 | SYR4 | 2014–2019 |
| Lithium | 26.4 µg/L No EPA limit set | 8/8 | UCMR-5 | 2024 |
| Fluoride | 880.7 µg/L 22% of the EPA limit 4000 µg/L
worst single sample: 881 µg/L | 7/7 | SYR4 | 2012–2018 |
| Barium | 32.5 µg/L 1.6% of the EPA limit 2000 µg/L
worst single sample: 33 µg/L | 6/6 | SYR4 | 2015–2019 |
| Combined Radium (-226 And -228) | 2.58 pCi/L 52% of the EPA limit 5 pCi/L
worst single sample: 2.7 pCi/L | 3/3 | SYR4 | 2015 |
| Monobromoacetic Acid | 2.09 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 3/49 | SYR4 | 2012–2019 |
| Chromium | 3.67 µg/L 3.7% of the EPA limit 100 µg/L
worst single sample: 3.8 µg/L | 2/6 | SYR4 | 2015–2019 |
| Di(2-ethylhexyl) Phthalate | 0.5950 µg/L 9.9% of the EPA limit 6 µg/L
worst single sample: 0.6000 µg/L | 2/11 | SYR4 | 2015–2019 |
| Ethylbenzene | 1.34015 µg/L 0.2% of the EPA limit 700 µg/L
worst single sample: 1.36 µg/L | 2/19 | SYR4 | 2014–2019 |
| Dalapon | 1.97 µg/L 1% of the EPA limit 200 µg/L | 1/12 | SYR4 | 2012–2019 |
| Selenium | 1.4 µg/L 2.8% of the EPA limit 50 µg/L | 1/6 | SYR4 | 2015–2019 |
83 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Chalk Hill Sud
Is Chalk Hill Sud tap water safe to drink?
EPA monitoring detected 26 contaminants in Chalk Hill 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 Chalk Hill Sud's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Copper, Nitrate, and others. The full list with the level and data source for each is above.
How many people does Chalk Hill Sud serve?
Chalk Hill Sud reports serving 4,830 people in Texas, per its EPA record.
Has Chalk Hill Sud had any water quality violations?
The EPA has 26 violations on file for Chalk Hill Sud, of which 12 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.