Is West Harris County Mud 9 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	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31

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	455.2 µg/L 35% of the EPA limit 1300 µg/L worst single sample: 691.1 µg/L	69/74	SYR4	2013–2017
Lead	6.622 µg/L 44% of the EPA limit 15 µg/L worst single sample: 6.88 µg/L	23/74	SYR4	2013–2017
Nitrate	170 µg/L 1.7% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Combined Radium (-226 And -228)	3.868 pCi/L 77% of the EPA limit 5 pCi/L worst single sample: 4.44 pCi/L	14/14	SYR4	2013–2019
Combined Uranium	20.79 µg/L 69% of the EPA limit 30 µg/L worst single sample: 21.7 µg/L	14/14	SYR4	2013–2019
Gross Alpha, Excl. Radon And U	20.35 pCi/L 136% of the EPA limit, at the 95th percentile of samples — 15 pCi/L worst single sample: 21 pCi/L	14/14	SYR4	2013–2019
Gross Beta Particle Activity	13.99 pCi/L No EPA limit set worst single sample: 14.1 pCi/L	12/14	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	12/12	LCR	2023
Arsenic	3.26 µg/L 33% of the EPA limit 10 µg/L worst single sample: 3.3 µg/L	3/3	SYR4	2016–2019
Barium	317.7 µg/L 16% of the EPA limit 2000 µg/L worst single sample: 320 µg/L	3/3	SYR4	2016–2019
Nitrate-Nitrite	169 µg/L 1.7% of the EPA limit 10000 µg/L worst single sample: 170 µg/L	3/3	SYR4	2012–2015
Selenium	9.83 µg/L 20% of the EPA limit 50 µg/L worst single sample: 9.9 µg/L	3/3	SYR4	2016–2019
Dichloroacetic Acid	1.285 µg/L No EPA limit set worst single sample: 1.3 µg/L	2/7	SYR4	2013–2019
Fluoride	189.5 µg/L 4.7% of the EPA limit 4000 µg/L worst single sample: 190 µg/L	2/2	SYR4	2014–2017
Total Haloacetic Acids (HAA5)	1.285 µg/L 2.1% of the EPA limit 60 µg/L worst single sample: 1.3 µg/L	2/7	SYR4	2013–2019
Lithium	14.1 µg/L No EPA limit set	2/2	UCMR-5	2023
Bromodichloromethane	1.7 µg/L No EPA limit set	1/12	SYR4	2013–2019
Bromoform	1 µg/L No EPA limit set	1/12	SYR4	2013–2019
Chloroform	1.1 µg/L No EPA limit set	1/12	SYR4	2013–2019
Dibromochloromethane	1.6 µg/L No EPA limit set	1/12	SYR4	2013–2019
TTHM	5.4 µg/L 6.8% of the EPA limit 80 µg/L	1/7	SYR4	2013–2019

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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SHEERAN, STEPHEN, G
Phone: 713-739-1060

Frequently asked questions about West Harris County Mud 9

Is West Harris County Mud 9 tap water safe to drink?

EPA monitoring detected 21 contaminants in West Harris County Mud 9'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 West Harris County Mud 9's water?

EPA monitoring detected Copper, Lead, Nitrate, Combined Radium (-226 And -228), Combined Uranium, and others. The full list with the level and data source for each is above.

How many people does West Harris County Mud 9 serve?

West Harris County Mud 9 reports serving 5,961 people in Texas, per its EPA record.

Has West Harris County Mud 9 had any water quality violations?

The EPA has 29 violations on file for West Harris County Mud 9, of which 23 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.