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Tap water quality report

Crosby Mud

EPA monitoring tested this supplier for 79 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
21
detected
5,130
people served
38
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Surface water
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.

38
health-based violations
59
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2025-10-01 → 2025-10-31
TT Health-based Resolved 2025-10-01 → 2025-10-31
TT Health-based Resolved 2025-10-01 → 2025-10-31
TT Health-based Resolved 2025-10-01 → 2025-10-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chloroform
23.175 µg/L
No EPA limit set
worst single sample: 29.9 µg/L
54/60 SYR4 2012–2019
Bromodichloromethane
6.49 µg/L
No EPA limit set
worst single sample: 10.1 µg/L
52/60 SYR4 2012–2019
TTHM
27.725 µg/L 35%
of the EPA limit 80 µg/L
worst single sample: 42.3 µg/L
46/52 SYR4 2012–2019
Dichloroacetic Acid
27.46 µg/L
No EPA limit set
worst single sample: 28.9 µg/L
44/52 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
37.115 µg/L 62%
of the EPA limit 60 µg/L
worst single sample: 52.5 µg/L
44/52 SYR4 2012–2019
Trichloroacetic Acid
8.37 µg/L
No EPA limit set
worst single sample: 17.3 µg/L
44/52 SYR4 2012–2019
Copper
391.4 µg/L 30%
of the EPA limit 1300 µg/L
worst single sample: 451 µg/L
37/45 SYR4 2013–2019
Nitrate
1660 µg/L 17%
of the EPA limit 10000 µg/L
 16/18 SYR4 2012–2019
Lead
0.00084 mg/L 5.6%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2026
Lead
4.3445 µg/L 29%
of the EPA limit 15 µg/L
worst single sample: 6.34 µg/L
14/45 SYR4 2013–2019
Monochloroacetic Acid
7.7 µg/L
No EPA limit set
worst single sample: 8 µg/L
13/52 SYR4 2012–2019
Dibromochloromethane
2.055 µg/L
No EPA limit set
worst single sample: 2.3 µg/L
8/60 SYR4 2012–2019
Fluoride
496.5 µg/L 12%
of the EPA limit 4000 µg/L
worst single sample: 500 µg/L
8/8 SYR4 2012–2019
Barium
105.4 µg/L 5.3%
of the EPA limit 2000 µg/L
worst single sample: 106 µg/L
7/7 SYR4 2013–2019
Dibromoacetic Acid
1.34 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
7/52 SYR4 2012–2019
Cyanide
112.5 µg/L 56%
of the EPA limit 200 µg/L
worst single sample: 120 µg/L
4/6 SYR4 2014–2019
Atrazine
0.3120 µg/L 10%
of the EPA limit 3 µg/L
worst single sample: 0.3200 µg/L
3/8 SYR4 2012–2019
Simazine
0.2065 µg/L 5.2%
of the EPA limit 4 µg/L
worst single sample: 0.2100 µg/L
2/8 SYR4 2012–2019
Arsenic
2.6 µg/L 26%
of the EPA limit 10 µg/L
 1/7 SYR4 2013–2019
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Nitrate-Nitrite
590 µg/L 5.9%
of the EPA limit 10000 µg/L
 1/1 SYR4 2013
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ZARSKY, WESLY
Phone
281-328-4242

Frequently asked questions about Crosby Mud

Is Crosby Mud tap water safe to drink?

EPA monitoring detected 21 contaminants in Crosby Mud'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 Crosby Mud's water?

EPA monitoring detected Chloroform, Bromodichloromethane, 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 Crosby Mud serve?

Crosby Mud reports serving 5,130 people in Texas, per its EPA record.

Has Crosby Mud had any water quality violations?

The EPA has 59 violations on file for Crosby Mud, of which 38 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.