Is Harris County Mud 127 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
MCL	Health-based	Resolved	2004-10-01 → 2004-12-31
MCL	Health-based	Resolved	2004-10-01 → 2004-12-31
MCL	Health-based	Resolved	2004-04-01 → 2004-06-30
MCL	Health-based	Resolved	2004-04-01 → 2004-06-30
MCL	Health-based	Resolved	2004-03-01 → 2004-06-30
MCL	Health-based	Resolved	2004-03-01 → 2004-06-30
MCL	Health-based	Resolved	2004-01-01 → 2004-03-31
MCL	Health-based	Resolved	2004-01-01 → 2004-03-31
MCL	Health-based	Resolved	2003-01-01 → 2003-12-31
MCL	Health-based	Resolved	2003-01-01 → 2003-12-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfba	0.0059 µg/L	2/3	2025
Pfpea	0.0033 µg/L	2/3	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
Copper	350 µg/L 27% of the EPA limit 1300 µg/L	53/61	SYR4	2012–2018
Lead	5.18 µg/L 35% of the EPA limit 15 µg/L	16/61	SYR4	2012–2018
Nitrate	970 µg/L 9.7% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Bromodichloromethane	12.9 µg/L No EPA limit set	12/12	SYR4	2013–2019
Chloroform	21 µg/L No EPA limit set	12/12	SYR4	2013–2019
Dibromochloromethane	5.3 µg/L No EPA limit set	12/12	SYR4	2013–2019
Lead	0.00060 mg/L 4% of the EPA limit 0.0150 mg/L	10/10	LCR	2024
Atrazine	0.3900 µg/L 13% of the EPA limit 3 µg/L	8/8	SYR4	2012–2019
Dichloroacetic Acid	25.2 µg/L No EPA limit set	7/7	SYR4	2013–2019
TTHM	35.9 µg/L 45% of the EPA limit 80 µg/L	7/7	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	35.2 µg/L 59% of the EPA limit 60 µg/L	7/7	SYR4	2013–2019
Trichloroacetic Acid	6.8 µg/L No EPA limit set	7/7	SYR4	2013–2019
Dibromoacetic Acid	3.2 µg/L No EPA limit set	6/7	SYR4	2013–2019
Simazine	0.1900 µg/L 4.8% of the EPA limit 4 µg/L	5/8	SYR4	2012–2019
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L	3/3	SYR4	2012–2018
Nitrate-Nitrite	850 µg/L 8.5% of the EPA limit 10000 µg/L	3/3	SYR4	2013–2019
Barium	99.2 µg/L 5% of the EPA limit 2000 µg/L	2/2	SYR4	2016–2019
Bromoform	1.1 µg/L No EPA limit set	2/12	SYR4	2013–2019
Cyanide	120 µg/L 60% of the EPA limit 200 µg/L	2/2	SYR4	2014–2017
Nitrite	20 µg/L 2% of the EPA limit 1000 µg/L	2/3	SYR4	2013–2019
Combined Uranium	1 µg/L 3.3% of the EPA limit 30 µg/L	1/1	SYR4	2015
Gross Beta Particle Activity	4.5 pCi/L No EPA limit set	1/1	SYR4	2015
Monochloroacetic Acid	5.1 µg/L No EPA limit set	1/7	SYR4	2013–2019
Selenium	3 µg/L 6% of the EPA limit 50 µg/L	1/2	SYR4	2016–2019
Lithium	9.25 µg/L No EPA limit set	1/4	UCMR-5	2025

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, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: HERZOG, MAUREEN
Phone: 713-864-5466
Email: Mherzogmud@gmail.com

Frequently asked questions about Harris County Mud 127

Is Harris County Mud 127 tap water safe to drink?

EPA monitoring detected 27 contaminants in Harris County Mud 127'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 127's water?

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

How many people does Harris County Mud 127 serve?

Harris County Mud 127 reports serving 5,247 people in Texas, per its EPA record.

Has Harris County Mud 127 had any water quality violations?

The EPA has 11 violations on file for Harris County Mud 127, of which 11 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.