Witter Springs, CA Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Safe water is the norm across most of Witter Springs, CA — but documented violations push the city to the middle safety tier.
How Witter Springs Compares
Data: EPA SDWIS Last verified: 2026-06-03
Witter Springs Water: The Quick Version
- Homes built before 1986: 85% — older plumbing may contain lead solder.
- CDC health risk index: 14.48 — above typical levels.
Water Systems Serving Witter Springs
A single dominant system supplies most of Witter Springs, CA. That utility controls infrastructure decisions, rate structures, and EPA compliance reporting for most residential addresses served across those 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Witter Springs, California (population ~91), covering 1 community water system serving approximately 989 people region-wide.
No EPA violations recorded across any ZIP codes in Witter Springs — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Witter Springs: 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
Witter Springs water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Witter Springs
- 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 |
|---|---|---|---|
| 95493 | C | UPPER LAKE COUNTY WATER DISTRICT | 989 |
All ZIP Codes in Witter Springs
- 95493 [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.
CDC Health Data for Witter Springs
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
How Old Is Witter Springs's Housing Stock?
With 85% 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
Lead solder was standard in copper plumbing until federally banned in 1986; lead pipes were common in service lines pre-1970. Witter Springs's median build year of 1977 reflects a housing stock where these older materials are a pervasive feature — not a rare legacy — of the residential plumbing landscape.
Over half of homes in Witter Springs were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Witter Springs
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.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 85% of the Witter Springs inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Witter Springs
- 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 85% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Witter Springs, CA