Is City of Houston Willow Chase 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
MR	Monitoring	Resolved	2011-09-01 → 2011-09-30
MR	Monitoring	Resolved	2011-09-01 → 2011-09-30
MR	Monitoring	Resolved	2011-09-01 → 2011-09-30
MR	Monitoring	Resolved	2011-09-01 → 2011-09-30
MR	Monitoring	Resolved	2011-08-01 → 2011-08-31
MR	Monitoring	Resolved	2011-08-01 → 2011-08-31
MR	Monitoring	Resolved	2011-08-01 → 2011-08-31
MR	Monitoring	Resolved	2011-08-01 → 2011-08-31

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 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
Copper	695 µg/L 53% of the EPA limit 1300 µg/L	62/69	SYR4	2014–2017
Nitrate	260 µg/L 2.6% of the EPA limit 10000 µg/L	62/62	SYR4	2012–2019
Dibromochloromethane	9.4 µg/L No EPA limit set	29/138	SYR4	2012–2019
TTHM	21.8 µg/L 27% of the EPA limit 80 µg/L	28/118	SYR4	2012–2019
Lead	7.05 µg/L 47% of the EPA limit 15 µg/L	19/69	SYR4	2014–2017
Bromoform	8.3 µg/L No EPA limit set	16/138	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Arsenic	3.6 µg/L 36% of the EPA limit 10 µg/L	10/10	SYR4	2015–2019
Barium	282 µg/L 14% of the EPA limit 2000 µg/L	10/10	SYR4	2015–2019
Bromodichloromethane	5 µg/L No EPA limit set	9/138	SYR4	2012–2019
Fluoride	140 µg/L 3.5% of the EPA limit 4000 µg/L	8/8	SYR4	2014–2018
Selenium	6.9 µg/L 14% of the EPA limit 50 µg/L	8/10	SYR4	2015–2019
Lithium	14 µg/L No EPA limit set	8/8	UCMR-5	2025
Dibromoacetic Acid	3.7 µg/L No EPA limit set	6/118	SYR4	2012–2019
Nitrate-Nitrite	240 µg/L 2.4% of the EPA limit 10000 µg/L	6/6	SYR4	2012–2015
Total Haloacetic Acids (HAA5)	26.3 µg/L 44% of the EPA limit 60 µg/L	6/118	SYR4	2012–2019
Combined Uranium	5.7 µg/L 19% of the EPA limit 30 µg/L	5/5	SYR4	2015–2018
Gross Alpha, Excl. Radon And U	4 pCi/L 27% of the EPA limit 15 pCi/L	5/5	SYR4	2015–2018
Dichloroacetic Acid	18.4 µg/L No EPA limit set	4/118	SYR4	2012–2019
Trichloroacetic Acid	5.6 µg/L No EPA limit set	3/118	SYR4	2012–2019
Chloroform	3.1 µg/L No EPA limit set	2/138	SYR4	2012–2019
Gross Beta Particle Activity	4.5 pCi/L No EPA limit set	2/5	SYR4	2015–2018
Xylenes, Total	3.4 µg/L 0% of the EPA limit 10000 µg/L	2/20	SYR4	2015–2019
Di(2-ethylhexyl) Phthalate	0.7200 µg/L 12% of the EPA limit 6 µg/L	1/10	SYR4	2012–2019
Monobromoacetic Acid	2 µg/L No EPA limit set	1/118	SYR4	2012–2019

84 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 Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MACCHI, RANDALL, V
Phone: 832-393-1000

Frequently asked questions about City of Houston Willow Chase

Is City of Houston Willow Chase tap water safe to drink?

EPA monitoring detected 25 contaminants in City of Houston Willow Chase'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 City of Houston Willow Chase's water?

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

How many people does City of Houston Willow Chase serve?

City of Houston Willow Chase reports serving 14,169 people in Texas, per its EPA record.

Has City of Houston Willow Chase had any water quality violations?

The EPA has 8 violations on file for City of Houston Willow Chase, of which 0 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.