Tap WaterIndex

← Texas

Tap water quality report

Harris County Mud 165

EPA monitoring tested this supplier for 109 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
26
detected
40,503
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
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.

0
health-based violations
4
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2019-04-01
MR Monitoring Resolved 2019-04-01
MR Monitoring Resolved 2014-12-30
MR Monitoring Resolved 2014-12-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0041 µg/L 1/10 2025
Pfpea 0.0047 µg/L 1/10 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
420 µg/L 32%
of the EPA limit 1300 µg/L
 193/205 SYR4 2013–2019
Nitrate
230 µg/L 2.3%
of the EPA limit 10000 µg/L
 46/52 SYR4 2012–2019
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
 23/205 SYR4 2013–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Dibromochloromethane
3.2 µg/L
No EPA limit set
 13/40 SYR4 2013–2019
Arsenic
9.6 µg/L 96%
of the EPA limit 10 µg/L
 9/9 SYR4 2013–2019
Barium
239 µg/L 12%
of the EPA limit 2000 µg/L
 9/9 SYR4 2013–2019
Bromodichloromethane
1.6 µg/L
No EPA limit set
 9/40 SYR4 2013–2019
Fluoride
1120 µg/L 28%
of the EPA limit 4000 µg/L
 9/9 SYR4 2013–2019
Bromoform
2.9 µg/L
No EPA limit set
 8/40 SYR4 2013–2019
Nitrate-Nitrite
220 µg/L 2.2%
of the EPA limit 10000 µg/L
 7/7 SYR4 2012–2018
Lithium
28.4 µg/L
No EPA limit set
 6/10 UCMR-5 2025
TTHM
7.5 µg/L 9.4%
of the EPA limit 80 µg/L
 5/13 SYR4 2013–2019
Xylenes, Total
16 µg/L 0.2%
of the EPA limit 10000 µg/L
 5/27 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
5 pCi/L 33%
of the EPA limit 15 pCi/L
 4/6 SYR4 2014–2019
Selenium
4.8 µg/L 9.6%
of the EPA limit 50 µg/L
 4/9 SYR4 2013–2019
Combined Uranium
9.4 µg/L 31%
of the EPA limit 30 µg/L
 3/6 SYR4 2014–2019
Ethylbenzene
1.8 µg/L 0.3%
of the EPA limit 700 µg/L
 3/27 SYR4 2013–2019
Gross Beta Particle Activity
5.1 pCi/L
No EPA limit set
 3/8 SYR4 2013–2019
Toluene
4.2 µg/L 0.4%
of the EPA limit 1000 µg/L
 2/27 SYR4 2013–2019
Combined Radium (-226 And -228)
1.1 pCi/L 22%
of the EPA limit 5 pCi/L
 1/4 SYR4 2013–2019
Di(2-ethylhexyl) Phthalate
0.6300 µg/L 11%
of the EPA limit 6 µg/L
 1/13 SYR4 2012–2019
Dibromoacetic Acid
1.2 µg/L
No EPA limit set
 1/13 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1.2 µg/L 2%
of the EPA limit 60 µg/L
 1/13 SYR4 2013–2019
83 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 TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDichloroacetic AcidDinosebEthylene DibromideEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BENTSON, ALAN
Phone
713-860-6400

Frequently asked questions about Harris County Mud 165

Is Harris County Mud 165 tap water safe to drink?

EPA monitoring detected 26 contaminants in Harris County Mud 165'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 165's water?

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

How many people does Harris County Mud 165 serve?

Harris County Mud 165 reports serving 40,503 people in Texas, per its EPA record.

Has Harris County Mud 165 had any water quality violations?

The EPA has 4 violations on file for Harris County Mud 165, 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.