Sausalito, CA Water Safety: 90/100 (2026)
2 ZIP codes · 2 water systems · Updated 2026-06-03
Sausalito tap water earns a high safety grade — above-average compliance with CA and federal standards.
How Sausalito Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Sausalito Water
- Average lead level: 0.0052 mg/L.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 10.78.
Who Supplies Your Water in Sausalito
2 independent water providers serve Sausalito, CA — 2 systems appear in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Sausalito, California (population ~12,160), covering 2 community water systems serving approximately 205,342 people region-wide.
No EPA violations recorded across any ZIP codes in Sausalito — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Sausalito: A (90/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Sausalito water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0052 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 2 ZIP codes
Areas with No Violations
All ZIP Codes in Sausalito
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Sausalito
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Cost Context: What Remediation Means for Sausalito Homeowners
Because property values in Sausalito comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Sausalito are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 102% above the California average.
Lead Exposure Risk for Children in Sausalito
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Sausalito appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Sausalito
Measured across the NFIP's multi-decade tracking period, Sausalito shows a moderate flood record — 78 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Sausalito has a moderate flood history with 78 FEMA claims averaging $9,833 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Sausalito, CA