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.
0
health-based violations
8
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
| MR | Monitoring | Resolved | 2013-07-01 → 2013-09-30 |
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 |
|---|---|---|---|---|
| Bromodichloromethane | 11.65 µg/L No EPA limit set
worst single sample: 19.7 µg/L | 67/67 | SYR4 | 2012–2019 |
| Chloroform | 24.61 µg/L No EPA limit set
worst single sample: 47.7 µg/L | 67/67 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.085 µg/L No EPA limit set
worst single sample: 7.5 µg/L | 64/67 | SYR4 | 2012–2019 |
| Copper | 202.5 µg/L 16% of the EPA limit 1300 µg/L
worst single sample: 539 µg/L | 63/65 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 26.28 µg/L No EPA limit set
worst single sample: 28.7 µg/L | 62/62 | SYR4 | 2012–2019 |
| TTHM | 36.835 µg/L 46% of the EPA limit 80 µg/L
worst single sample: 74.5 µg/L | 62/62 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 36.205 µg/L 60% of the EPA limit 60 µg/L
worst single sample: 45.1 µg/L | 62/62 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.27 µg/L No EPA limit set
worst single sample: 14.9 µg/L | 62/62 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.2 µg/L No EPA limit set
worst single sample: 3.8 µg/L | 49/62 | SYR4 | 2012–2019 |
| Nitrate | 749 µg/L 7.5% of the EPA limit 10000 µg/L
worst single sample: 760 µg/L | 32/32 | SYR4 | 2012–2019 |
| Lead | 8.56 µg/L 57% of the EPA limit 15 µg/L
worst single sample: 19.2 µg/L | 20/65 | SYR4 | 2013–2019 |
| Bromoform | 2.52 µg/L No EPA limit set
worst single sample: 2.7 µg/L | 19/67 | SYR4 | 2012–2019 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2025 |
| Monochloroacetic Acid | 9.81 µg/L No EPA limit set
worst single sample: 11.1 µg/L | 7/62 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 745 µg/L 7.5% of the EPA limit 10000 µg/L
worst single sample: 760 µg/L | 7/7 | SYR4 | 2012–2015 |
| Atrazine | 0.2650 µg/L 8.8% of the EPA limit 3 µg/L
worst single sample: 0.2700 µg/L | 6/8 | SYR4 | 2012–2019 |
| Simazine | 0.1820 µg/L 4.6% of the EPA limit 4 µg/L
worst single sample: 0.2000 µg/L | 5/8 | SYR4 | 2012–2019 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L | 3/7 | SYR4 | 2012–2015 |
| Barium | 80.59 µg/L 4% of the EPA limit 2000 µg/L
worst single sample: 82.4 µg/L | 2/2 | SYR4 | 2014–2017 |
| Cyanide | 168 µg/L 84% of the EPA limit 200 µg/L
worst single sample: 170 µg/L | 2/2 | SYR4 | 2014–2017 |
| Fluoride | 413 µg/L 10% of the EPA limit 4000 µg/L
worst single sample: 420 µg/L | 2/2 | SYR4 | 2014–2017 |
| Lithium | 14.2 µg/L No EPA limit set | 2/4 | UCMR-5 | 2023 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2014 |
| Ethylbenzene | 2 µg/L 0.3% of the EPA limit 700 µg/L | 1/5 | SYR4 | 2015–2019 |
| Gross Beta Particle Activity | 4 pCi/L No EPA limit set | 1/1 | SYR4 | 2014 |
| Toluene | 2.1 µg/L 0.2% of the EPA limit 1000 µg/L | 1/5 | SYR4 | 2015–2019 |
| Xylenes, Total | 12 µg/L 0.1% of the EPA limit 10000 µg/L | 1/5 | SYR4 | 2015–2019 |
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, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Harris County Mud 183
Is Harris County Mud 183 tap water safe to drink?
EPA monitoring detected 31 contaminants in Harris County Mud 183'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 Harris County Mud 183's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Copper, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 183 serve?
Harris County Mud 183 reports serving 3,981 people in Texas, per its EPA record.
Has Harris County Mud 183 had any water quality violations?
The EPA has 8 violations on file for Harris County Mud 183, of which 0 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.