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Tap water quality report

Harris County Mud 150

EPA monitoring tested this supplier for 108 contaminants and detected 24. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
24
detected
6,786
people served
49
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.

49
health-based violations
53
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-04-01 → 2010-06-30
MCL Health-based Resolved 2010-04-01 → 2010-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0066 µg/L 6/8 2025
Pfhxa 0.0055 µg/L 5/8 2025
Pfpea 0.0069 µg/L 5/8 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
Chloroform
34.7 µg/L
No EPA limit set
 78/78 SYR4 2012–2019
Bromodichloromethane
6.1 µg/L
No EPA limit set
 77/78 SYR4 2012–2019
Dichloroacetic Acid
31.9 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
TTHM
38.7 µg/L 48%
of the EPA limit 80 µg/L
 62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
49 µg/L 82%
of the EPA limit 60 µg/L
 62/62 SYR4 2012–2019
Trichloroacetic Acid
5.8 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
Nitrate
1580 µg/L 16%
of the EPA limit 10000 µg/L
 32/32 SYR4 2012–2019
Copper
72.7 µg/L 5.6%
of the EPA limit 1300 µg/L
 26/64 SYR4 2013–2019
Monochloroacetic Acid
11.3 µg/L
No EPA limit set
 17/62 SYR4 2012–2019
Atrazine
1.6 µg/L 53%
of the EPA limit 3 µg/L
 16/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Simazine
0.3100 µg/L 7.8%
of the EPA limit 4 µg/L
 12/18 SYR4 2012–2019
Lead
2.57 µg/L 17%
of the EPA limit 15 µg/L
 10/64 SYR4 2013–2019
Dibromochloromethane
1.3 µg/L
No EPA limit set
 8/78 SYR4 2012–2019
Nitrate-Nitrite
1230 µg/L 12%
of the EPA limit 10000 µg/L
 6/6 SYR4 2012–2015
Barium
71.5 µg/L 3.6%
of the EPA limit 2000 µg/L
 5/5 SYR4 2014–2019
Cyanide
130 µg/L 65%
of the EPA limit 200 µg/L
 3/4 SYR4 2014–2017
Fluoride
110 µg/L 2.8%
of the EPA limit 4000 µg/L
 3/4 SYR4 2014–2017
Nitrite
20 µg/L 2%
of the EPA limit 1000 µg/L
 3/6 SYR4 2012–2015
Di(2-ethylhexyl) Phthalate
1.1 µg/L 18%
of the EPA limit 6 µg/L
 1/18 SYR4 2012–2019
Gross Beta Particle Activity
5.3 pCi/L
No EPA limit set
 1/2 SYR4 2016
84 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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VILLARREAL, PAUL
Phone
281-895-8547
Email
pvillarreal@wwwmsinc.net

Frequently asked questions about Harris County Mud 150

Is Harris County Mud 150 tap water safe to drink?

EPA monitoring detected 24 contaminants in Harris County Mud 150'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 150's water?

EPA monitoring detected Chloroform, Bromodichloromethane, 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 150 serve?

Harris County Mud 150 reports serving 6,786 people in Texas, per its EPA record.

Has Harris County Mud 150 had any water quality violations?

The EPA has 53 violations on file for Harris County Mud 150, of which 49 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.