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Tap water quality report

Harris County Mud 163

EPA monitoring tested this supplier for 109 contaminants and detected 27. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
27
detected
5,487
people served
4
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.

4
health-based violations
5
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MR Monitoring Resolved 1992-07-01 → 1993-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0031 µg/L 1/3 2025
Pfpea 0.0034 µg/L 1/3 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
24.3 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
Chloroform
53 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
Dichloroacetic Acid
40 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
TTHM
74.8 µg/L 94%
of the EPA limit 80 µg/L
 62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
59 µg/L 98%
of the EPA limit 60 µg/L
 62/62 SYR4 2012–2019
Trichloroacetic Acid
12.9 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
Copper
572 µg/L 44%
of the EPA limit 1300 µg/L
 60/63 SYR4 2013–2017
Dibromochloromethane
13 µg/L
No EPA limit set
 60/67 SYR4 2012–2019
Dibromoacetic Acid
7.8 µg/L
No EPA limit set
 52/62 SYR4 2012–2019
Lead
56 µg/L 373%
of the EPA limit, in the worst sample — 15 µg/L
 34/63 SYR4 2013–2017
Lead
0.0084 mg/L 56%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Nitrate
710 µg/L 7.1%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Atrazine
0.4500 µg/L 15%
of the EPA limit 3 µg/L
 13/14 SYR4 2012–2019
Monochloroacetic Acid
13.3 µg/L
No EPA limit set
 10/62 SYR4 2012–2019
Bromoform
4 µg/L
No EPA limit set
 8/67 SYR4 2012–2019
Simazine
0.1500 µg/L 3.8%
of the EPA limit 4 µg/L
 7/14 SYR4 2012–2019
Barium
99.4 µg/L 5%
of the EPA limit 2000 µg/L
 3/3 SYR4 2013–2019
Nitrate-Nitrite
560 µg/L 5.6%
of the EPA limit 10000 µg/L
 3/3 SYR4 2012–2015
Di(2-ethylhexyl) Phthalate
0.7300 µg/L 12%
of the EPA limit 6 µg/L
 2/14 SYR4 2012–2019
Fluoride
350 µg/L 8.8%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Cyanide
150 µg/L 75%
of the EPA limit 200 µg/L
 1/2 SYR4 2014–2017
Combined Radium (-226 And -228)
2.6 pCi/L 52%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Gross Alpha, Excl. Radon And U
2.6 pCi/L 17%
of the EPA limit 15 pCi/L
 1/1 SYR4 2014
Gross Beta Particle Activity
5.4 pCi/L
No EPA limit set
 1/1 SYR4 2014
Hexachlorocyclopentadiene
0.1300 µg/L 0.3%
of the EPA limit 50 µg/L
 1/14 SYR4 2012–2019
82 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) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BIRDWELL, SHANNON
Phone
281-578-4200

Frequently asked questions about Harris County Mud 163

Is Harris County Mud 163 tap water safe to drink?

EPA monitoring detected 27 contaminants in Harris County Mud 163'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 163's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, 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 163 serve?

Harris County Mud 163 reports serving 5,487 people in Texas, per its EPA record.

Has Harris County Mud 163 had any water quality violations?

The EPA has 5 violations on file for Harris County Mud 163, of which 4 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.