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WaterSafeCheck

Paso Robles, CA Tap Water Quality

Water safety reports for all 2 ZIP codes in Paso Robles, California

Average Score

50/100

Health Violations

16

ZIP Codes

2

High Lead Risk

0

of 2 ZIP codes

D

About Tap Water in Paso Robles, CA

Tap water quality in Paso Robles, CA is a significant concern, currently receiving a below-average safety score of 50/100 across 2 ZIP codes. With 16 health-based violations recorded in the past 5 years, systems like City of Paso Robles Water Division have struggled to maintain compliance with EPA regulations enforced by California State Water Resources Control Board. Residents are strongly encouraged to utilize certified water filtration systems.

The accumulation of 16 health-based violations over the past 5 years highlights systemic challenges within Paso Robles's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by California State Water Resources Control Board. The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Fortunately, the modeled risk for widespread lead exposure in Paso Robles's municipal water is relatively low compared to national averages. However, because lead typically enters drinking water through the corrosion of older, individual home plumbing rather than the main supply lines, residents in homes built before 1986 should still exercise caution by running the tap before use.

Health-Based Contaminant Violations in Paso Robles

EPA records indicate that the following contaminants have exceeded Safe Drinking Water Act Maximum Contaminant Levels (MCLs) in Paso Robles water systems over the past 5 years.

Total Trihalomethanes (TTHM)Haloacetic Acids (HAA5)

Note: The presence of a past violation does not necessarily mean current water is unsafe. Utilities are required to take corrective action. Review your Consumer Confidence Report for the latest status.

Water Quality by ZIP Code — Paso Robles, CA

Click any ZIP code for the full water quality report

D
93446

Paso Robles, CA

Score: 51/1008 violations
D
93447

Paso Robles, CA

Score: 48/1008 violations

Frequently Asked Questions — Paso Robles Water Quality

Is tap water safe to drink in Paso Robles, CA?+
Tap water in Paso Robles has a grade of D, indicating compliance concerns in recent years. Families with young children or pregnant women should consider using a certified NSF/ANSI 53 water filter for drinking and cooking.
What is the water quality score for Paso Robles?+
The average water quality score across 2 ZIP codes in Paso Robles, CA is 50/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Paso Robles have lead in its tap water?+
Lead risk ratings in Paso Robles are relatively low based on EPA monitoring data. However, lead in home plumbing is a separate concern — if your home was built before 1986, individual tap testing is recommended.
How do I get the water quality report for Paso Robles?+
Each ZIP code in Paso Robles has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Paso Robles's tap water come from?+
Tap water in Paso Robles, CA primarily comes from surface water. Surface water systems treat water from rivers, lakes, or reservoirs using filtration, sedimentation, and disinfection before it reaches your tap.

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