Is Harris County Mud 50 Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Harris

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2009-09-01 → 2009-09-30
MCL	Health-based	Resolved	2009-09-01 → 2009-09-30
MCL	Health-based	Resolved	2009-09-01 → 2009-09-30
MCL	Health-based	Archived	1992-08-01 → 1992-08-31
RPT	Monitoring	Resolved	2025-07-02
RPT	Monitoring	Resolved	2025-07-02
MR	Monitoring	Resolved	2014-10-01
MR	Monitoring	Resolved	2014-10-01
MR	Monitoring	Resolved	2014-10-01
MR	Monitoring	Resolved	2014-10-01

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	195.6 µg/L 15% of the EPA limit 1300 µg/L worst single sample: 228 µg/L	50/65	SYR4	2013–2018
Lead	12.86 µg/L 86% of the EPA limit 15 µg/L worst single sample: 32 µg/L	27/65	SYR4	2013–2018
Bromodichloromethane	5.795 µg/L No EPA limit set worst single sample: 17 µg/L	24/24	SYR4	2012–2019
Bromoform	7.71 µg/L No EPA limit set worst single sample: 9.9 µg/L	24/24	SYR4	2012–2019
Dibromochloromethane	12.745 µg/L No EPA limit set worst single sample: 16 µg/L	24/24	SYR4	2012–2019
Chloroform	5.84 µg/L No EPA limit set worst single sample: 11 µg/L	13/24	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	11/11	LCR	2024
Nitrate	20 µg/L 0.2% of the EPA limit 10000 µg/L	8/48	SYR4	2012–2019
Dibromoacetic Acid	3.59 µg/L No EPA limit set worst single sample: 3.8 µg/L	7/7	SYR4	2012–2019
Fluoride	768 µg/L 19% of the EPA limit 4000 µg/L worst single sample: 780 µg/L	7/7	SYR4	2012–2018
TTHM	29.82 µg/L 37% of the EPA limit 80 µg/L worst single sample: 31.2 µg/L	7/7	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	3.59 µg/L 6% of the EPA limit 60 µg/L worst single sample: 3.8 µg/L	7/7	SYR4	2012–2019
Barium	78.375 µg/L 3.9% of the EPA limit 2000 µg/L worst single sample: 80.3 µg/L	6/6	SYR4	2014–2018
Lithium	11.6 µg/L No EPA limit set	6/6	UCMR-5	2023
Arsenic	3.9 µg/L 39% of the EPA limit 10 µg/L	2/6	SYR4	2014–2018
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L	2/2	SYR4	2015
Xylenes, Total	5.67 µg/L 0.1% of the EPA limit 10000 µg/L worst single sample: 5.9 µg/L	2/17	SYR4	2014–2019
Ethylbenzene	1.1 µg/L 0.2% of the EPA limit 700 µg/L	1/17	SYR4	2014–2019
Nitrate-Nitrite	10 µg/L 0.1% of the EPA limit 10000 µg/L	1/8	SYR4	2012–2015

90 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) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SONNIER, ANDREW
Phone: 281-772-0754

Frequently asked questions about Harris County Mud 50

Is Harris County Mud 50 tap water safe to drink?

EPA monitoring detected 19 contaminants in Harris County Mud 50'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 50's water?

EPA monitoring detected Copper, Lead, Bromodichloromethane, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 50 serve?

Harris County Mud 50 reports serving 4,743 people in Texas, per its EPA record.

Has Harris County Mud 50 had any water quality violations?

The EPA has 25 violations on file for Harris County Mud 50, of which 4 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.