Water Quality in Oxnard, CA (93003)

EPA violation data for public water systems serving ZIP code 93003.

No Health-Based Violations

None of the 19 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are10 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 67% of US ZIP codes.

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

52,906

Population

19

Water Systems

10

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (19)

Oxnard Water Dept

Purchased surface water 200,232 people served
0 violations
Lead tested: 2.2 ppb (limit: 15 ppb)

Ventura Water Department

Surface water 113,500 people served
0 violations

Ventura Wwd No. 8 - Simi Valley

All resolved
Purchased surface water 94,738 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Cal American Water Co

All resolved
Purchased surface water 66,809 people served
1 violation (5yr) · All resolved
Lead tested: 3 ppb (limit: 15 ppb)

City Of Thousand Oaks Water Department

Purchased surface water 53,157 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Camarillo Water Dept

Purchased surface water 46,824 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Golden State Water Company - Simi Valley

Purchased surface water 45,128 people served
0 violations

Ventura Cwwd No. 1 - Moorpark

Purchased surface water 35,514 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Rancho Sespe Workers Imp Assoc

All resolved
Groundwater 600 people served
2 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

M/V Masco Endeavor

All resolved
Purchased groundwater 378 people served
2 violations (5yr) · All resolved

Vineyard Mutual Water Company/Industrial

Groundwater 259 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Buenaventura Lemon

Groundwater 65 people served
0 violations

Sierra Meadows Hospital

Groundwater 60 people served
0 violations

New Camp Bartlett

Groundwater 40 people served
0 violations

Blu-In Cafe

All resolved
Groundwater 33 people served
4 violations (5yr) · All resolved

Rose Valley Camp

Groundwater 25 people served
0 violations

Channel Islands National Park

Purchased surface water 10 people served
0 violations

Bailard Landfill - Vrsd

Groundwater 0
0 violations

Sherwin Acres Mutual Water Co

Groundwater 0
0 violations

Contaminants Found

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

7 violations
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

2 violations
All resolved
NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jul 2023

How Does This Compare?

Oxnard (93003) has more violations than 67% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 10, most of which are monitoring/reporting issues.

Fewer violations 67th 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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