Tupman, CA Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Across water systems in Tupman, EPA data shows a below-average compliance pattern for CA — health-based violations are on file in several areas, and checking the specific system serving your address is a practical first step for concerned residents.
How Tupman Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Tupman Residents
- Homes built before 1986: 56% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 12.57 — above typical levels.
Tupman's Water Providers
The structure of water supply in Tupman, CA is straightforward: one utility provides the bulk of residential service among 1 tracked system, concentrating rate-setting and infrastructure decisions under a single organization.
Overview
We track water quality and home safety data for 1 ZIP code in Tupman, California (population ~175), covering 1 community water system serving approximately 1,508 people region-wide.
No EPA violations recorded across any ZIP codes in Tupman — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Tupman: D (53/100)
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
Tupman water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Tupman
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 93276 | D | BUTTONWILLOW CWD | 1,508 |
All ZIP Codes in Tupman
- 93276 [D]
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.
Tupman Community Health Snapshot
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
Tupman Infrastructure Age
With 56% 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
Because the majority of Tupman's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1987 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Tupman 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.
How Remediation Costs Compare in Tupman
Across Tupman, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Tupman are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 74% below the California average.
Tupman: Lead Risk & Vulnerable Populations
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.
When older housing represents 56% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Tupman address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Tupman
- 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 56% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Tupman, CA