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.
2
health-based violations
10
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Archived | 1984-02-14 → 1985-02-13 |
| MCL | Health-based | Archived | 1984-02-14 → 1985-02-13 |
| MR | Monitoring | Resolved | 2013-12-30 |
| Other | Monitoring | Resolved | 2011-03-11 |
| Other | Monitoring | Resolved | 2011-03-11 |
| Other | Monitoring | Resolved | 2009-12-21 |
| MR | Monitoring | Resolved | 2009-08-01 → 2009-08-31 |
| MR | Monitoring | Resolved | 2009-08-01 → 2009-08-31 |
| MR | Monitoring | Resolved | 2009-08-01 → 2009-08-31 |
| MR | Monitoring | Resolved | 1992-07-01 → 1993-06-30 |
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 | 313 µg/L 24% of the EPA limit 1300 µg/L
worst single sample: 1010 µg/L | 88/101 | SYR4 | 2013–2019 |
| Lead | 14.15 µg/L 94% of the EPA limit 15 µg/L
worst single sample: 82.4 µg/L | 60/101 | SYR4 | 2013–2019 |
| Chloroform | 25.02 µg/L No EPA limit set
worst single sample: 28.5 µg/L | 49/67 | SYR4 | 2012–2019 |
| Bromodichloromethane | 10.26 µg/L No EPA limit set
worst single sample: 12.2 µg/L | 48/67 | SYR4 | 2012–2019 |
| TTHM | 33.63 µg/L 42% of the EPA limit 80 µg/L
worst single sample: 39.1 µg/L | 48/62 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 33.995 µg/L 57% of the EPA limit 60 µg/L
worst single sample: 34.6 µg/L | 48/62 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 22.54 µg/L No EPA limit set
worst single sample: 25.5 µg/L | 47/62 | SYR4 | 2012–2019 |
| Dibromochloromethane | 4.58 µg/L No EPA limit set
worst single sample: 5.5 µg/L | 44/67 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 7.245 µg/L No EPA limit set
worst single sample: 10.1 µg/L | 44/62 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.64 µg/L No EPA limit set
worst single sample: 3.2 µg/L | 37/62 | SYR4 | 2012–2019 |
| Nitrate | 988.5 µg/L 9.9% of the EPA limit 10000 µg/L
worst single sample: 1060 µg/L | 32/32 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 18/18 | LCR | 2025 |
| Bromoform | 2.195 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 10/67 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 8.59 µg/L No EPA limit set
worst single sample: 8.8 µg/L | 7/62 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1220 µg/L 12% of the EPA limit 10000 µg/L
worst single sample: 1340 µg/L | 7/7 | SYR4 | 2012–2015 |
| Nitrite | 244 µg/L 24% of the EPA limit 1000 µg/L
worst single sample: 280 µg/L | 5/7 | SYR4 | 2012–2015 |
| Atrazine | 0.2770 µg/L 9.2% of the EPA limit 3 µg/L
worst single sample: 0.2800 µg/L | 4/8 | SYR4 | 2012–2019 |
| Simazine | 0.1780 µg/L 4.5% of the EPA limit 4 µg/L
worst single sample: 0.1800 µg/L | 3/8 | SYR4 | 2012–2019 |
| Arsenic | 5.925 µg/L 59% of the EPA limit 10 µg/L
worst single sample: 6.1 µg/L | 2/2 | SYR4 | 2016–2019 |
| Barium | 189.4 µg/L 9.5% of the EPA limit 2000 µg/L
worst single sample: 190 µg/L | 2/2 | SYR4 | 2016–2019 |
| Combined Radium (-226 And -228) | 1.0095 pCi/L 20% of the EPA limit 5 pCi/L
worst single sample: 1.01 pCi/L | 2/2 | SYR4 | 2013–2019 |
| Fluoride | 508.5 µg/L 13% of the EPA limit 4000 µg/L
worst single sample: 520 µg/L | 2/2 | SYR4 | 2014–2017 |
| Gross Beta Particle Activity | 5.65 pCi/L No EPA limit set
worst single sample: 5.7 pCi/L | 2/3 | SYR4 | 2012–2019 |
| Selenium | 5.25 µg/L 11% of the EPA limit 50 µg/L
worst single sample: 5.3 µg/L | 2/2 | SYR4 | 2016–2019 |
| Lithium | 17.9 µg/L No EPA limit set | 2/3 | UCMR-5 | 2025 |
| Cyanide | 90 µg/L 45% of the EPA limit 200 µg/L | 1/2 | SYR4 | 2014–2017 |
| Combined Uranium | 2 µg/L 6.7% of the EPA limit 30 µg/L | 1/1 | SYR4 | 2019 |
| Gross Alpha, Excl. Radon And U | 3 pCi/L 20% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Chimney Hill Mud
Is Chimney Hill Mud tap water safe to drink?
EPA monitoring detected 31 contaminants in Chimney Hill Mud'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 Chimney Hill Mud's water?
EPA monitoring detected Copper, Lead, Chloroform, Bromodichloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does Chimney Hill Mud serve?
Chimney Hill Mud reports serving 5,409 people in Texas, per its EPA record.
Has Chimney Hill Mud had any water quality violations?
The EPA has 10 violations on file for Chimney Hill Mud, of which 2 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.