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.
4
health-based violations
4
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
| MCL | Health-based | Resolved | 2003-08-01 → 2003-08-31 |
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 |
|---|---|---|---|---|
| Copper | 159.4 µg/L 12% of the EPA limit 1300 µg/L
worst single sample: 2390 µg/L | 153/216 | SYR4 | 2012–2019 |
| Chloroform | 16.74 µg/L No EPA limit set
worst single sample: 34.6 µg/L | 104/117 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3 µg/L No EPA limit set
worst single sample: 5.1 µg/L | 98/117 | SYR4 | 2012–2019 |
| TTHM | 19.2 µg/L 24% of the EPA limit 80 µg/L
worst single sample: 40.8 µg/L | 91/102 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 20.91 µg/L No EPA limit set
worst single sample: 28.6 µg/L | 90/102 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 27.175 µg/L 45% of the EPA limit 60 µg/L
worst single sample: 35.4 µg/L | 90/102 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.58 µg/L No EPA limit set
worst single sample: 4.1 µg/L | 85/102 | SYR4 | 2012–2019 |
| Lead | 45.85 µg/L 306% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 118 µg/L | 64/216 | SYR4 | 2012–2019 |
| Nitrate | 1180 µg/L 12% of the EPA limit 10000 µg/L
worst single sample: 1750 µg/L | 40/46 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 7.63 µg/L No EPA limit set
worst single sample: 10.8 µg/L | 28/102 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Atrazine | 0.7280 µg/L 24% of the EPA limit 3 µg/L
worst single sample: 0.8600 µg/L | 13/18 | SYR4 | 2012–2019 |
| Barium | 241.7 µg/L 12% of the EPA limit 2000 µg/L
worst single sample: 283 µg/L | 8/8 | SYR4 | 2012–2019 |
| Fluoride | 623 µg/L 16% of the EPA limit 4000 µg/L
worst single sample: 650 µg/L | 7/7 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 1440 µg/L 14% of the EPA limit 10000 µg/L
worst single sample: 1770 µg/L | 7/8 | SYR4 | 2012–2015 |
| Dibromoacetic Acid | 1.54 µg/L No EPA limit set
worst single sample: 1.6 µg/L | 5/102 | SYR4 | 2012–2019 |
| Dibromochloromethane | 1.34 µg/L No EPA limit set
worst single sample: 1.4 µg/L | 5/117 | SYR4 | 2012–2019 |
| Simazine | 0.2505 µg/L 6.3% of the EPA limit 4 µg/L
worst single sample: 0.2700 µg/L | 4/18 | SYR4 | 2012–2019 |
| Lithium | 34.7 µg/L No EPA limit set | 4/8 | UCMR-5 | 2025 |
| Arsenic | 7.81 µg/L 78% of the EPA limit 10 µg/L
worst single sample: 8.4 µg/L | 3/8 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 2.62 pCi/L 52% of the EPA limit 5 pCi/L
worst single sample: 2.8 pCi/L | 3/3 | SYR4 | 2012–2014 |
| Gross Beta Particle Activity | 5.95 pCi/L No EPA limit set
worst single sample: 6.1 pCi/L | 3/5 | SYR4 | 2012–2018 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L | 3/8 | SYR4 | 2012–2015 |
| Bromoform | 1.29 µg/L No EPA limit set
worst single sample: 1.3 µg/L | 2/117 | SYR4 | 2012–2019 |
| Cyanide | 105.5 µg/L 53% of the EPA limit 200 µg/L
worst single sample: 110 µg/L | 2/6 | SYR4 | 2014–2017 |
| Di(2-ethylhexyl) Phthalate | 0.7785 µg/L 13% of the EPA limit 6 µg/L
worst single sample: 0.7800 µg/L | 2/18 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 4.71 pCi/L 31% of the EPA limit 15 pCi/L
worst single sample: 4.8 pCi/L | 2/4 | SYR4 | 2014–2018 |
| Combined Uranium | 1.2 µg/L 4% of the EPA limit 30 µg/L | 1/4 | SYR4 | 2014–2018 |
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, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Cnp Utility District
Is Cnp Utility District tap water safe to drink?
EPA monitoring detected 31 contaminants in Cnp Utility District'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 Cnp Utility District's water?
EPA monitoring detected Copper, Chloroform, Bromodichloromethane, TTHM, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Cnp Utility District serve?
Cnp Utility District reports serving 14,718 people in Texas, per its EPA record.
Has Cnp Utility District had any water quality violations?
The EPA has 4 violations on file for Cnp Utility District, of which 4 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.