Compliance record
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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Chloroform | 36 µg/L No EPA limit set | 72/75 | SYR4 | 2012–2019 |
| Bromodichloromethane | 10.1 µg/L No EPA limit set | 70/75 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 40.1 µg/L No EPA limit set | 62/62 | SYR4 | 2012–2019 |
| TTHM | 40.3 µg/L 50% of the EPA limit 80 µg/L | 62/62 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 54.5 µg/L 91% of the EPA limit 60 µg/L | 62/62 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 11.3 µg/L No EPA limit set | 60/62 | SYR4 | 2012–2019 |
| Copper | 720 µg/L 55% of the EPA limit 1300 µg/L | 56/64 | SYR4 | 2013–2019 |
| Dibromochloromethane | 4.2 µg/L No EPA limit set | 55/75 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.9 µg/L No EPA limit set | 51/62 | SYR4 | 2012–2019 |
| Nitrate | 1120 µg/L 11% of the EPA limit 10000 µg/L | 28/32 | SYR4 | 2012–2019 |
| Atrazine | 0.3700 µg/L 12% of the EPA limit 3 µg/L | 18/23 | SYR4 | 2012–2019 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Lead | 8.1 µg/L 54% of the EPA limit 15 µg/L | 13/64 | SYR4 | 2013–2019 |
| Simazine | 0.3300 µg/L 8.3% of the EPA limit 4 µg/L | 13/23 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 7 µg/L No EPA limit set | 6/62 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1160 µg/L 12% of the EPA limit 10000 µg/L | 6/6 | SYR4 | 2012–2015 |
| Barium | 59.7 µg/L 3% of the EPA limit 2000 µg/L | 4/4 | SYR4 | 2014–2017 |
| Fluoride | 440 µg/L 11% of the EPA limit 4000 µg/L | 4/4 | SYR4 | 2014–2017 |
| Nitrite | 40 µg/L 4% of the EPA limit 1000 µg/L | 4/6 | SYR4 | 2012–2015 |
| Xylenes, Total | 2.1 µg/L 0% of the EPA limit 10000 µg/L | 4/13 | SYR4 | 2015–2019 |
| Bromoform | 1.1 µg/L No EPA limit set | 2/75 | SYR4 | 2012–2019 |
| Cyanide | 60 µg/L 30% of the EPA limit 200 µg/L | 2/4 | SYR4 | 2014–2017 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 2/2 | SYR4 | 2014–2015 |
| Hexachlorocyclopentadiene | 0.1200 µg/L 0.2% of the EPA limit 50 µg/L | 2/23 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 1.1 µg/L 18% of the EPA limit 6 µg/L | 1/23 | SYR4 | 2012–2019 |
| Lithium | 16.2 µg/L No EPA limit set | 1/8 | UCMR-5 | 2024 |
79 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) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Horsepen Bayou Mud
Is Horsepen Bayou Mud tap water safe to drink?
EPA monitoring detected 30 contaminants in Horsepen Bayou 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 Horsepen Bayou Mud's water?
EPA monitoring detected Chloroform, Bromodichloromethane, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Horsepen Bayou Mud serve?
Horsepen Bayou Mud reports serving 6,597 people in Texas, per its EPA record.
Has Horsepen Bayou Mud had any water quality violations?
The EPA has no formal drinking-water violations on file for Horsepen Bayou Mud.
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.