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 | 542.05 µg/L 42% of the EPA limit 1300 µg/L
worst single sample: 1000 µg/L | 52/62 | SYR4 | 2013–2017 |
| Lead | 0.0012 mg/L 7.7% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2023 |
| Arsenic | 9.61 µg/L 96% of the EPA limit 10 µg/L
worst single sample: 9.7 µg/L | 10/10 | SYR4 | 2012–2019 |
| Lead | 5.78 µg/L 39% of the EPA limit 15 µg/L
worst single sample: 6.3 µg/L | 3/62 | SYR4 | 2013–2017 |
| Barium | 212.75 µg/L 11% of the EPA limit 2000 µg/L
worst single sample: 213 µg/L | 2/2 | SYR4 | 2014–2017 |
| Dibromochloromethane | 1.675 µg/L No EPA limit set
worst single sample: 1.7 µg/L | 2/12 | SYR4 | 2013–2019 |
| Fluoride | 414 µg/L 10% of the EPA limit 4000 µg/L
worst single sample: 420 µg/L | 2/2 | SYR4 | 2014–2017 |
| Nitrate | 10 µg/L 0.1% of the EPA limit 10000 µg/L | 2/16 | SYR4 | 2012–2019 |
| TTHM | 3.765 µg/L 4.7% of the EPA limit 80 µg/L
worst single sample: 3.9 µg/L | 2/7 | SYR4 | 2013–2019 |
| Lithium | 31.3 µg/L No EPA limit set | 2/2 | UCMR-5 | 2023 |
| Bromodichloromethane | 1 µg/L No EPA limit set | 1/12 | SYR4 | 2013–2019 |
| Chloroform | 1.2 µg/L No EPA limit set | 1/12 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 1.8 pCi/L 36% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2015 |
| Gross Alpha, Excl. Radon And U | 4.6 pCi/L 31% of the EPA limit 15 pCi/L | 1/1 | SYR4 | 2015 |
| Gross Beta Particle Activity | 4.6 pCi/L No EPA limit set | 1/1 | SYR4 | 2015 |
| Nitrate-Nitrite | 10 µg/L 0.1% of the EPA limit 10000 µg/L | 1/3 | SYR4 | 2012–2015 |
| Selenium | 5.5 µg/L 11% of the EPA limit 50 µg/L | 1/2 | SYR4 | 2014–2017 |
92 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Harris County Mud 345
Is Harris County Mud 345 tap water safe to drink?
EPA monitoring detected 17 contaminants in Harris County Mud 345'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 345's water?
EPA monitoring detected Copper, Lead, Arsenic, Lead, Barium, and others. The full list with the level and data source for each is above.
How many people does Harris County Mud 345 serve?
Harris County Mud 345 reports serving 3,855 people in Texas, per its EPA record.
Has Harris County Mud 345 had any water quality violations?
The EPA has no formal drinking-water violations on file for Harris County Mud 345.
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.