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Tap water quality report

Harris County Mud 412

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
3,480
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
13
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2018-07-01
Other Monitoring Resolved 2014-02-24
Other Monitoring Resolved 2014-02-24
MR Monitoring Resolved 2012-04-01 → 2012-06-30
MR Monitoring Resolved 2012-04-01 → 2012-06-30
MR Monitoring Resolved 2012-04-01 → 2012-06-30
MR Monitoring Resolved 2012-04-01 → 2012-06-30
MR Monitoring Resolved 2012-04-01 → 2012-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0071 µg/L 3/4 2024
Pfhxa 0.0067 µg/L 3/4 2024
Pfpea 0.0077 µg/L 3/4 2024
PFBS 0.0030 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
Copper
233 µg/L 18%
of the EPA limit 1300 µg/L
 60/62 SYR4 2013–2017
Chloroform
17.6 µg/L
No EPA limit set
 56/57 SYR4 2012–2019
TTHM
21.4 µg/L 27%
of the EPA limit 80 µg/L
 50/50 SYR4 2012–2019
Dichloroacetic Acid
18.5 µg/L
No EPA limit set
 49/50 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
29.5 µg/L 49%
of the EPA limit 60 µg/L
 49/50 SYR4 2012–2019
Trichloroacetic Acid
6 µg/L
No EPA limit set
 47/50 SYR4 2012–2019
Bromodichloromethane
3.8 µg/L
No EPA limit set
 44/57 SYR4 2012–2019
Nitrate
1050 µg/L 11%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
15.9 µg/L 106%
of the EPA limit, in the worst sample — 15 µg/L
 11/62 SYR4 2013–2017
Lead
0.00080 mg/L 5.3%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Dibromochloromethane
2.5 µg/L
No EPA limit set
 6/57 SYR4 2012–2019
Monochloroacetic Acid
13.7 µg/L
No EPA limit set
 5/50 SYR4 2012–2019
Bromoform
1.3 µg/L
No EPA limit set
 4/57 SYR4 2012–2019
Barium
184 µg/L 9.2%
of the EPA limit 2000 µg/L
 3/3 SYR4 2013–2019
Dibromoacetic Acid
1.7 µg/L
No EPA limit set
 3/50 SYR4 2012–2019
Nitrate-Nitrite
980 µg/L 9.8%
of the EPA limit 10000 µg/L
 3/3 SYR4 2012–2015
Nitrite
30 µg/L 3%
of the EPA limit 1000 µg/L
 3/3 SYR4 2012–2015
Lithium
20 µg/L
No EPA limit set
 2/4 UCMR-5 2024
Atrazine
0.4700 µg/L 16%
of the EPA limit 3 µg/L
 1/2 SYR4 2016–2019
Cyanide
70 µg/L 35%
of the EPA limit 200 µg/L
 1/2 SYR4 2014–2017
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/1 SYR4 2013
Fluoride
830 µg/L 21%
of the EPA limit 4000 µg/L
 1/3 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, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
OEHL, MARK
Phone
713-860-6400

Frequently asked questions about Harris County Mud 412

Is Harris County Mud 412 tap water safe to drink?

EPA monitoring detected 26 contaminants in Harris County Mud 412'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 412's water?

EPA monitoring detected Copper, 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 412 serve?

Harris County Mud 412 reports serving 3,480 people in Texas, per its EPA record.

Has Harris County Mud 412 had any water quality violations?

The EPA has 13 violations on file for Harris County Mud 412, 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.