Water Quality in Chico, TX (76431)

EPA violation data for public water systems serving ZIP code 76431.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

4,494

Population

4

Water Systems

115

Violations (5yr)

25

Health-Based

Location

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Water Systems Serving This Area (4)

City Of Chico

Groundwater 1,596 people served
1 violation (5yr)
Lead tested: 0 ppb (limit: 15 ppb) ✓

Grand Harbor Wsc

25 health-based
Purchased surface water 360 people served
114 violations (5yr) · 25 health-based
Lead tested: 0 ppb (limit: 15 ppb) ✓

City Of Chico West

Purchased surface water 0
0 violations

Crafton Mobile Home Park

Groundwater 0
0 violations

Contaminants Found

TTHMHealth-Based
33 violations
All resolved
Total Haloacetic Acids (HAA5)Health-Based
10 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
2 violations
Has active
Public NoticeMonitoring
32 violations
Has active
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

18 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

7 violations
Has active
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

4 violations
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

4 violations
Has active
E. COLIMonitoring
1 violation
Has active

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Chico (76431) has more violations than 97% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 115.

Fewer violations 97th percentile More violations

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

NSF Certified Products → EPA Safe Drinking Water Guide →

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

NSF Certified Products → EPA Safe Drinking Water Guide →

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.

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