Water Quality in Houston, TX (77521)
EPA violation data for public water systems serving ZIP code 77521.
Active Health Violations
5 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 95% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
69,038
Population
35
Water Systems
79
Violations (5yr)
5
Health-Based
Location
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Water Systems Serving This Area (35)
City Of Houston
1 health-basedCity Of Pasadena
City Of Mont Belvieu
3 health-basedHarris County Fwsd 27
All resolvedPinehurst Subdivision
Chevron Chemical Company
Fiddlers Restaurant
Snappy Mart
Cedar Bayou Pk Water No 4 - Ne
Cedar Bayou Pk Water No 2
Lincoln Cedar Water System
Midessa Oil Patch Rv Park
Critter Runners Bugs N Beer
All resolvedCedar Bayou Park Water No 3
Baytown Nissan
J & J Cowboy Country Usa
Cedar Bend Subdivision
Julie Ann Villa Water System
Massey Tompkins W.S. East
Massey-Tompkins W S West
Baytown Carbon Black Plant
Willow Grove Mhp
Captains Osgoods Seafood
Shell Offshore Inc
Barkaloo Homeowners Association
1 health-basedCountry Day Montessori Center
6403 Mobile Home Park
Baytown Piper
Delynn Water Ii
Mcneils Bar B Q
Wegmans #69 Water Vending
Mcmahon Mobile Home Park
Lanier Mhp
Vfw Post 912
All resolvedGrace Womens Center
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Used to disinfect water — generally safe at regulated levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2024
How Does This Compare?
Houston (77521) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 79.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.