Water Quality in Concord, CA (94523)
EPA violation data for public water systems serving ZIP code 94523.
No Health-Based Violations
None of the 11 water systems serving this ZIP have any violations in the past 5 years.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
34,592
Population
11
Water Systems
0
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (11)
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) ✓
Firebaugh Travel Plaza (Sw)
Surface water 250 people served
0 violations
West Wind Winery
Groundwater 103 people served
0 violations
Lake Berryessa Boy Scout Camp
Surface water 55 people served
0 violations
Pine Grove Mobilehome Park
Groundwater 53 people served
0 violations
Lead tested: 1.11 ppb (limit: 15 ppb) ✓
Syed Zaidi
Groundwater 50 people served
0 violations
Valley View Ranches Mutual
Groundwater 40 people served
0 violations
Camp Hawley Lake, Bsa
Groundwater 25 people served
0 violations
Lead & Copper Levels
Lead (Pb)
Within limit3.1 ppb measured
Action level: 15 ppb
Sampled: Jan 2023
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.