The Sea Ranch, CA Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Recent monitoring in The Sea Ranch shows middle-tier safety for CA — some systems are clean; others have logged EPA violations.
How The Sea Ranch Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About The Sea Ranch Water
- Homes built before 1986: 49% — older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- CDC health risk index: 11.32.
Who Supplies Your Water in The Sea Ranch
Consolidated water delivery characterizes The Sea Ranch, CA: among 1 system in federal records, one utility holds the dominant service position — carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.
Overview
We track water quality and home safety data for 1 ZIP code in The Sea Ranch, California (population ~1,200), covering 1 community water system serving approximately 2,593 people region-wide.
No EPA violations recorded across any ZIP codes in The Sea Ranch — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for The Sea Ranch: C (66/100)
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
The Sea Ranch water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for The Sea Ranch
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95497 | C | NORTH GUALALA WATER COMPANY | 2,593 |
All ZIP Codes in The Sea Ranch
- 95497 [C]
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 The Sea Ranch
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
Housing & Infrastructure in The Sea Ranch
With 49% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Development in The Sea Ranch unfolded across multiple decades, and the median build year of 1983 reflects a housing inventory where eras of construction are genuinely mixed — including portions that predate the federal prohibition on lead solder in plumbing.
Most homes in The Sea Ranch were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for The Sea Ranch Homeowners
Placing remediation in the context of The Sea Ranch's property market, the equity share is low — most homeowners here are weighing a financial commitment that fits comfortably within routine property planning, far from the threshold where remediation becomes a material equity decision rather than a standard upkeep consideration.
Remediation costs in The Sea Ranch are relatively low compared to home values. The $300–$800 estimated range is a small fraction of median property value. Home values are 62% above the California average.
Lead Exposure Risk for Children in The Sea Ranch
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.
Reading the local data together points toward a structural gap that matters more here than in low-exposure communities. 49% of The Sea Ranch stock comes from the pre-rule era, and citywide monitoring either approaches or sits beyond the federal benchmark under Lead and Copper Rule sampling. A baseline kit fits the routine-diligence category, with certified filtration available via retailer networks where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in The Sea Ranch
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 49% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for The Sea Ranch, CA