Water Quality in Concord, CA (94507)

EPA violation data for public water systems serving ZIP code 94507.

No Health-Based Violations

None of the 6 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There is1 monitoring/reporting violation (missed testing deadlines), all resolved.

Better than 29% of US ZIP codes.

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

14,586

Population

6

Water Systems

1

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (6)

Contra Costa Water District

Surface water 198,000 people served
0 violations
Lead tested: 3.1 ppb (limit: 15 ppb) ✓

City Of Antioch

Surface water 115,074 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓

Brentwood

Purchased surface water 64,513 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓

City Of Pittsburg

Purchased surface water 62,500 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓

Huntington Lake Resort

All resolved
Groundwater 30 people served
1 violation (5yr) · All resolved

Sues Swim School

Groundwater 30 people served
0 violations

Contaminants Found

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
3.1 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

Concord (94507) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1, most of which are monitoring/reporting issues.

Fewer violations 29th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.

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