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Tap water quality report

Harris County Mud 70

EPA monitoring tested this supplier for 108 contaminants and detected 27. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
27
detected
5,763
people served
2
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.

2
health-based violations
9
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1984-11-07 → 1985-11-06
MCL Health-based Archived 1984-11-07 → 1985-11-06
Other Monitoring Unaddressed 2025-07-01
MR Monitoring Resolved 2006-05-01 → 2006-05-31
MR Monitoring Resolved 2006-05-01 → 2006-05-31
MR Monitoring Resolved 2006-05-01 → 2006-05-31
MR Monitoring Resolved 2006-05-01 → 2006-05-31
MR Monitoring Archived 1993-05-01 → 1993-05-31
Other Monitoring Archived 1993-05-01 → 1993-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0068 µg/L 4/4 2024
Pfba 0.0092 µg/L 3/4 2024
Pfhxa 0.0063 µg/L 2/4 2024
PFHXS 0.0034 µg/L 2/4 2024
PFBS 0.0034 µg/L 1/4 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
Bromodichloromethane
15 µg/L
No EPA limit set
 68/68 SYR4 2012–2019
Chloroform
35.8 µg/L
No EPA limit set
 68/68 SYR4 2012–2019
Dibromochloromethane
8.1 µg/L
No EPA limit set
 64/68 SYR4 2012–2019
Dichloroacetic Acid
40.1 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
TTHM
50.2 µg/L 63%
of the EPA limit 80 µg/L
 62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
57.4 µg/L 96%
of the EPA limit 60 µg/L
 62/62 SYR4 2012–2019
Trichloroacetic Acid
14 µg/L
No EPA limit set
 62/62 SYR4 2012–2019
Dibromoacetic Acid
4.8 µg/L
No EPA limit set
 53/62 SYR4 2012–2019
Copper
220 µg/L 17%
of the EPA limit 1300 µg/L
 43/62 SYR4 2013–2019
Lead
8.74 µg/L 58%
of the EPA limit 15 µg/L
 21/62 SYR4 2013–2019
Nitrate
790 µg/L 7.9%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0019 mg/L 13%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Bromoform
3 µg/L
No EPA limit set
 14/68 SYR4 2012–2019
Monochloroacetic Acid
6.8 µg/L
No EPA limit set
 12/62 SYR4 2012–2019
Atrazine
0.4700 µg/L 16%
of the EPA limit 3 µg/L
 11/12 SYR4 2014–2019
Simazine
0.1800 µg/L 4.5%
of the EPA limit 4 µg/L
 4/12 SYR4 2014–2019
Nitrate-Nitrite
790 µg/L 7.9%
of the EPA limit 10000 µg/L
 3/3 SYR4 2012–2015
Barium
86.8 µg/L 4.3%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Fluoride
350 µg/L 8.8%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Cyanide
160 µg/L 80%
of the EPA limit 200 µg/L
 1/2 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
2.6 pCi/L 17%
of the EPA limit 15 pCi/L
 1/2 SYR4 2014–2017
Gross Beta Particle Activity
5.3 pCi/L
No EPA limit set
 1/2 SYR4 2014–2017
81 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 DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PETERS, STEPHANIE
Phone
713-623-4531

Frequently asked questions about Harris County Mud 70

Is Harris County Mud 70 tap water safe to drink?

EPA monitoring detected 27 contaminants in Harris County Mud 70'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 70's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 70 serve?

Harris County Mud 70 reports serving 5,763 people in Texas, per its EPA record.

Has Harris County Mud 70 had any water quality violations?

The EPA has 9 violations on file for Harris County Mud 70, of which 2 are health-based (a contaminant limit or required treatment was breached) and 1 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.