Santa Rosa, California Water Quality Report

Comprehensive water safety analysis • Updated February 2026

Santa Rosa maintains excellent water quality with all 9 tested contaminants well below EPA safety limits.

Water Safety Overview

Generally Safe. Santa Rosa's tap water meets EPA standards. Score: 94/100.

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9
Total Tested
0
Above EPA Limit
0
Elevated
9
Safe Levels

All Detected Contaminants

9 contaminants tested • EPA SDWIS data

ContaminantLevel DetectedEPA Limit% of LimitStatus
Haloacetic Acids
12.63 ug/L
60.00 ug/L
21.1%
Safe
Fluoride
0.524 mg/L
4.00 mg/L
13.1%
Safe
Chromium
0.012 mg/L
0.100 mg/L
11.8%
Safe
Lead
0.0015 mg/L
0.015 mg/L
10.1%
Safe
Arsenic
0.0010 mg/L
0.010 mg/L
9.8%
Safe
Nitrate
0.906 mg/L
10.00 mg/L
9.1%
Safe
Total Trihalomethanes
6.23 ug/L
80.00 ug/L
7.8%
Safe
Nitrite
0.041 mg/L
1.00 mg/L
4.1%
Safe
Mercury
0.0001 mg/L
0.0020 mg/L
3.9%
Safe

Recommended Water Filters for Santa Rosa

Based on detected contaminants

Reverse Osmosis System

Best for Santa Rosa. Removes 95-99% of contaminants including heavy metals, PFAS, and nitrates.

  • ✓ Removes lead
  • ✓ Removes arsenic
  • ✓ Removes nitrates
  • ✓ Removes total dissolved solids

Activated Carbon Filter

Good for Santa Rosa. Removes chlorine, improves taste, and filters many organic compounds.

  • ✓ Removes chlorine and chloramine
  • ✓ Improves taste and odor
  • ✓ Filters pesticides and VOCs

NSF 53 Lead Certification Required

Lead detected in Santa Rosa. Ensure any filter is NSF/ANSI 53 certified for lead removal.

Water System Information

SANTA ROSA WATER SYSTEM

PWS ID:
CA666762
Population Served:
180,783
Water Source:
groundwater
A94/100

Santa Rosa Water Quality Score

Based on EPA contaminant data and compliance records

95
Contaminants
97
Compliance
91
Infrastructure

Positive Findings

  • Excellent overall water quality
  • All tested contaminants well below EPA limits
  • No violations in the past 3 years

Protect Your Family's Water

Even with good water quality, many families choose to filter their water for extra peace of mind.

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