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Tap water quality report

Harris County Mud 188

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
9,453
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
2
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2013-12-30
MR Monitoring Resolved 2011-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0074 µg/L 2/4 2025
Pfhxa 0.0048 µg/L 2/4 2025
Pfpea 0.0047 µg/L 1/4 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
Bromodichloromethane
12.9 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
Chloroform
55.1 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
TTHM
63.9 µg/L 80%
of the EPA limit 80 µg/L
 62/62 SYR4 2012–2019
Dichloroacetic Acid
49.5 µg/L
No EPA limit set
 61/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
70.9 µg/L 118%
of the EPA limit, in the worst sample — 60 µg/L
 61/62 SYR4 2012–2019
Trichloroacetic Acid
23.1 µg/L
No EPA limit set
 61/62 SYR4 2012–2019
Dibromochloromethane
5.7 µg/L
No EPA limit set
 59/67 SYR4 2012–2019
Dibromoacetic Acid
3.3 µg/L
No EPA limit set
 47/62 SYR4 2012–2019
Copper
614 µg/L 47%
of the EPA limit 1300 µg/L
 43/61 SYR4 2013–2017
Cyanide
150 µg/L 75%
of the EPA limit 200 µg/L
 18/24 SYR4 2014–2019
Lead
11 µg/L 73%
of the EPA limit 15 µg/L
 17/61 SYR4 2013–2017
Nitrate
800 µg/L 8%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0037 mg/L 25%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Monochloroacetic Acid
13 µg/L
No EPA limit set
 9/62 SYR4 2012–2019
Atrazine
0.2700 µg/L 9%
of the EPA limit 3 µg/L
 7/8 SYR4 2012–2019
Simazine
0.1500 µg/L 3.8%
of the EPA limit 4 µg/L
 5/8 SYR4 2012–2019
Nitrate-Nitrite
690 µg/L 6.9%
of the EPA limit 10000 µg/L
 3/3 SYR4 2012–2015
Barium
60.7 µg/L 3%
of the EPA limit 2000 µg/L
 2/2 SYR4 2016–2019
Fluoride
470 µg/L 12%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Bromoform
1 µg/L
No EPA limit set
 1/67 SYR4 2012–2019
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Gross Beta Particle Activity
6 pCi/L
No EPA limit set
 1/1 SYR4 2014
Nitrite
10 µg/L 1%
of the EPA limit 1000 µg/L
 1/3 SYR4 2012–2015
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, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HENDERSON, GARY
Phone
713-651-3620

Frequently asked questions about Harris County Mud 188

Is Harris County Mud 188 tap water safe to drink?

EPA monitoring detected 26 contaminants in Harris County Mud 188'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 188's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 188 serve?

Harris County Mud 188 reports serving 9,453 people in Texas, per its EPA record.

Has Harris County Mud 188 had any water quality violations?

The EPA has 2 violations on file for Harris County Mud 188, 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.