Is Harris County Mud 172 Tap Water Safe? Quality Report

Water source: SWP
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	2024-01-01 → 2024-06-30
MR	Monitoring	Resolved	2024-01-01 → 2024-06-30
MR	Monitoring	Resolved	2024-01-01 → 2024-06-30
MR	Monitoring	Resolved	2024-01-01 → 2024-06-30
MR	Monitoring	Resolved	2024-01-01 → 2024-06-30
MR	Monitoring	Resolved	2024-01-01 → 2024-06-30
Other	Monitoring	Resolved	2006-04-01
MR	Monitoring	Resolved	2005-12-01 → 2005-12-31
MR	Monitoring	Resolved	2005-12-01 → 2005-12-31
MR	Monitoring	Resolved	2005-12-01 → 2005-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfba	0.0055 µg/L	2/6	2025
Pfpea	0.0034 µg/L	2/6	2025

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
Nitrate	1000 µg/L 10% of the EPA limit 10000 µg/L	52/52	SYR4	2012–2019
Bromodichloromethane	12.4 µg/L No EPA limit set	45/50	SYR4	2012–2019
Chloroform	28.6 µg/L No EPA limit set	45/50	SYR4	2012–2019
Dibromochloromethane	4.5 µg/L No EPA limit set	38/50	SYR4	2012–2019
Dichloroacetic Acid	35.1 µg/L No EPA limit set	37/40	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	45.3 µg/L 76% of the EPA limit 60 µg/L	37/40	SYR4	2012–2019
TTHM	35 µg/L 44% of the EPA limit 80 µg/L	36/40	SYR4	2012–2019
Trichloroacetic Acid	11.7 µg/L No EPA limit set	36/40	SYR4	2012–2019
Copper	133 µg/L 10% of the EPA limit 1300 µg/L	28/43	SYR4	2012–2017
Dibromoacetic Acid	2.4 µg/L No EPA limit set	27/40	SYR4	2012–2019
Lead	0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L	12/12	LCR	2024
Atrazine	0.2400 µg/L 8% of the EPA limit 3 µg/L	8/9	SYR4	2012–2018
Nitrate-Nitrite	780 µg/L 7.8% of the EPA limit 10000 µg/L	7/7	SYR4	2012–2014
Simazine	0.1400 µg/L 3.5% of the EPA limit 4 µg/L	6/9	SYR4	2012–2018
Barium	132 µg/L 6.6% of the EPA limit 2000 µg/L	5/5	SYR4	2012–2019
Cyanide	170 µg/L 85% of the EPA limit 200 µg/L	5/5	SYR4	2014–2019
Fluoride	500 µg/L 13% of the EPA limit 4000 µg/L	5/5	SYR4	2012–2019
Monochloroacetic Acid	9 µg/L No EPA limit set	4/40	SYR4	2012–2019
Lithium	15.2 µg/L No EPA limit set	3/5	UCMR-5	2025
Gross Beta Particle Activity	4.6 pCi/L No EPA limit set	2/2	SYR4	2015–2017
Lead	2 µg/L 13% of the EPA limit 15 µg/L	2/43	SYR4	2012–2017
Arsenic	2.7 µg/L 27% of the EPA limit 10 µg/L	1/5	SYR4	2012–2019
Bromoform	0.6000 µg/L No EPA limit set	1/50	SYR4	2012–2019
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L	1/1	SYR4	2015
Combined Uranium	1.1 µg/L 3.7% of the EPA limit 30 µg/L	1/2	SYR4	2015–2017
Di(2-ethylhexyl) Phthalate	0.9900 µg/L 17% of the EPA limit 6 µg/L	1/9	SYR4	2012–2018

81 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, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FOLMAR, JERRY, M
Phone: 713-652-6500

Frequently asked questions about Harris County Mud 172

Is Harris County Mud 172 tap water safe to drink?

EPA monitoring detected 28 contaminants in Harris County Mud 172'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 172's water?

EPA monitoring detected Nitrate, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 172 serve?

Harris County Mud 172 reports serving 4,404 people in Texas, per its EPA record.

Has Harris County Mud 172 had any water quality violations?

The EPA has 11 violations on file for Harris County Mud 172, 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.