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Tap water quality report

Northwest Harris County Mud 20

EPA monitoring tested this supplier for 108 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
22
detected
3,429
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
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.

0
health-based violations
8
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2005-06-01 → 2005-06-30
MR Monitoring Resolved 2005-06-01 → 2005-06-30
MR Monitoring Resolved 2005-06-01 → 2005-06-30
MR Monitoring Resolved 2005-06-01 → 2005-06-30
MR Monitoring Resolved 2005-05-01 → 2005-05-31
MR Monitoring Resolved 2005-05-01 → 2005-05-31
MR Monitoring Resolved 2005-05-01 → 2005-05-31
MR Monitoring Resolved 2005-05-01 → 2005-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0114 µg/L 1/2 2024

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
741 µg/L 57%
of the EPA limit 1300 µg/L
 41/42 SYR4 2014–2018
Bromodichloromethane
23.4 µg/L
No EPA limit set
 16/16 SYR4 2012–2019
Chloroform
36 µg/L
No EPA limit set
 15/16 SYR4 2012–2019
Nitrate
550 µg/L 5.5%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Lead
0.0016 mg/L 11%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
Dichloroacetic Acid
18.3 µg/L
No EPA limit set
 8/8 SYR4 2013–2019
TTHM
66.6 µg/L 83%
of the EPA limit 80 µg/L
 8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
32.3 µg/L 54%
of the EPA limit 60 µg/L
 8/8 SYR4 2013–2019
Trichloroacetic Acid
6.5 µg/L
No EPA limit set
 8/8 SYR4 2013–2019
Lead
10.2 µg/L 68%
of the EPA limit 15 µg/L
 7/42 SYR4 2014–2018
Dibromochloromethane
14 µg/L
No EPA limit set
 4/16 SYR4 2012–2019
Bromoform
3.2 µg/L
No EPA limit set
 3/16 SYR4 2012–2019
Barium
76.2 µg/L 3.8%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Fluoride
450 µg/L 11%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Nitrate-Nitrite
560 µg/L 5.6%
of the EPA limit 10000 µg/L
 2/3 SYR4 2012–2015
Nitrite
20 µg/L 2%
of the EPA limit 1000 µg/L
 2/3 SYR4 2012–2015
Atrazine
0.4300 µg/L 14%
of the EPA limit 3 µg/L
 1/2 SYR4 2015–2018
Dibromoacetic Acid
3.6 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
Ethylbenzene
0.5000 µg/L 0.1%
of the EPA limit 700 µg/L
 1/8 SYR4 2012–2019
Monochloroacetic Acid
3.9 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
Xylenes, Total
2.4 µg/L 0%
of the EPA limit 10000 µg/L
 1/8 SYR4 2012–2019
86 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WRIGHT, BRIAN, R
Phone
713-951-0800

Frequently asked questions about Northwest Harris County Mud 20

Is Northwest Harris County Mud 20 tap water safe to drink?

EPA monitoring detected 22 contaminants in Northwest Harris County Mud 20'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 Northwest Harris County Mud 20's water?

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

How many people does Northwest Harris County Mud 20 serve?

Northwest Harris County Mud 20 reports serving 3,429 people in Texas, per its EPA record.

Has Northwest Harris County Mud 20 had any water quality violations?

The EPA has 8 violations on file for Northwest Harris County Mud 20, 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.