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Tap water quality report

Harris County Mud 383

EPA monitoring tested this supplier for 109 contaminants and detected 28. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
28
detected
4,881
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
29
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2022-10-01
Other Monitoring Resolved 2022-10-01
MON Monitoring Resolved 2021-09-01 → 2021-09-30
MON Monitoring Resolved 2021-09-01 → 2021-09-30
MON Monitoring Resolved 2021-09-01 → 2021-09-30
MON Monitoring Resolved 2021-09-01 → 2021-09-30
MR Monitoring Resolved 2008-10-01 → 2008-12-31
MR Monitoring Resolved 2008-10-01 → 2008-12-31
MR Monitoring Resolved 2008-10-01 → 2008-12-31
Other Monitoring Resolved 2003-05-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0055 µg/L 1/2 2025
Pfhxa 0.0036 µg/L 1/2 2025
Pfpea 0.0042 µg/L 1/2 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
Copper
431 µg/L 33%
of the EPA limit 1300 µg/L
 50/62 SYR4 2012–2017
Nitrate
890 µg/L 8.9%
of the EPA limit 10000 µg/L
 30/32 SYR4 2012–2019
Lead
22.1 µg/L 147%
of the EPA limit, in the worst sample — 15 µg/L
 22/62 SYR4 2012–2017
Nitrate-Nitrite
920 µg/L 9.2%
of the EPA limit 10000 µg/L
 6/7 SYR4 2012–2019
Xylenes, Total
2.4 µg/L 0%
of the EPA limit 10000 µg/L
 6/11 SYR4 2014–2019
Lead
0.00099 mg/L 6.6%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2023
Nitrite
200 µg/L 20%
of the EPA limit 1000 µg/L
 4/7 SYR4 2012–2019
Barium
297 µg/L 15%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2019
Fluoride
620 µg/L 16%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Bromodichloromethane
2.6 µg/L
No EPA limit set
 2/18 SYR4 2013–2019
Cyanide
160 µg/L 80%
of the EPA limit 200 µg/L
 2/2 SYR4 2014–2017
Chloroform
13.2 µg/L
No EPA limit set
 2/18 SYR4 2013–2019
Dichloroacetic Acid
26.4 µg/L
No EPA limit set
 2/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
33 µg/L 55%
of the EPA limit 60 µg/L
 2/7 SYR4 2013–2019
Lithium
47.6 µg/L
No EPA limit set
 2/4 UCMR-5 2025
Bromoform
2.6 µg/L
No EPA limit set
 1/18 SYR4 2013–2019
Combined Radium (-226 And -228)
3.5 pCi/L 70%
of the EPA limit 5 pCi/L
 1/1 SYR4 2018
Dibromochloromethane
4 µg/L
No EPA limit set
 1/18 SYR4 2013–2019
Ethylbenzene
0.8000 µg/L 0.1%
of the EPA limit 700 µg/L
 1/11 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
3.5 pCi/L 23%
of the EPA limit 15 pCi/L
 1/1 SYR4 2018
Gross Beta Particle Activity
4 pCi/L
No EPA limit set
 1/2 SYR4 2012–2018
Monochloroacetic Acid
2.9 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
Selenium
5.5 µg/L 11%
of the EPA limit 50 µg/L
 1/3 SYR4 2012–2019
TTHM
15.2 µg/L 19%
of the EPA limit 80 µg/L
 1/7 SYR4 2013–2019
Trichloroacetic Acid
3.7 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
POREA, JOHN, R
Phone
713-983-3000

Frequently asked questions about Harris County Mud 383

Is Harris County Mud 383 tap water safe to drink?

EPA monitoring detected 28 contaminants in Harris County Mud 383'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 383's water?

EPA monitoring detected Copper, Nitrate, Lead, Nitrate-Nitrite, Xylenes, Total, and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 383 serve?

Harris County Mud 383 reports serving 4,881 people in Texas, per its EPA record.

Has Harris County Mud 383 had any water quality violations?

The EPA has 29 violations on file for Harris County Mud 383, 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.