Compliance record
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 | 540 µg/L 42% of the EPA limit 1300 µg/L
worst single sample: 830 µg/L | 59/62 | SYR4 | 2013–2019 |
| Bromodichloromethane | 2.9 µg/L No EPA limit set | 15/15 | SYR4 | 2013–2019 |
| Bromoform | 4.67 µg/L No EPA limit set
worst single sample: 6 µg/L | 15/15 | SYR4 | 2013–2019 |
| Dibromochloromethane | 5.45 µg/L No EPA limit set
worst single sample: 5.8 µg/L | 15/15 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2025 |
| Nitrate | 20 µg/L 0.2% of the EPA limit 10000 µg/L | 12/16 | SYR4 | 2012–2019 |
| TTHM | 12.195 µg/L 15% of the EPA limit 80 µg/L
worst single sample: 13 µg/L | 8/8 | SYR4 | 2013–2019 |
| Chloroform | 1.2 µg/L No EPA limit set | 5/15 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 5/8 | SYR4 | 2013–2019 |
| Lead | 5.18 µg/L 35% of the EPA limit 15 µg/L
worst single sample: 5.3 µg/L | 5/62 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 2.5 µg/L 4.2% of the EPA limit 60 µg/L
worst single sample: 2.6 µg/L | 5/8 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 3/3 | SYR4 | 2013–2019 |
| Fluoride | 1703 µg/L 43% of the EPA limit 4000 µg/L
worst single sample: 1710 µg/L | 3/3 | SYR4 | 2012–2018 |
| Arsenic | 3.585 µg/L 36% of the EPA limit 10 µg/L
worst single sample: 3.6 µg/L | 2/2 | SYR4 | 2014–2017 |
| Barium | 152.55 µg/L 7.6% of the EPA limit 2000 µg/L
worst single sample: 153 µg/L | 2/2 | SYR4 | 2014–2017 |
| Gross Beta Particle Activity | 4.575 pCi/L No EPA limit set
worst single sample: 4.6 pCi/L | 2/3 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 10 µg/L 0.1% of the EPA limit 10000 µg/L | 2/3 | SYR4 | 2013–2019 |
| Selenium | 3.39 µg/L 6.8% of the EPA limit 50 µg/L
worst single sample: 3.4 µg/L | 2/2 | SYR4 | 2014–2017 |
| Lithium | 36.6 µg/L No EPA limit set | 2/2 | UCMR-5 | 2023 |
| Dichloroacetic Acid | 1 µg/L No EPA limit set | 1/8 | SYR4 | 2013–2019 |
| Xylenes, Total | 0.8000 µg/L 0% of the EPA limit 10000 µg/L | 1/7 | SYR4 | 2015–2019 |
88 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Harris County Mud 360
Is Harris County Mud 360 tap water safe to drink?
EPA monitoring detected 21 contaminants in Harris County Mud 360'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 360's water?
EPA monitoring detected Copper, Bromodichloromethane, Bromoform, Dibromochloromethane, Lead, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 360 serve?
Harris County Mud 360 reports serving 4,707 people in Texas, per its EPA record.
Has Harris County Mud 360 had any water quality violations?
The EPA has no formal drinking-water violations on file for Harris County Mud 360.
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.