Livermore, CA Water Safety: 89/100 (2026)
2 ZIP codes · 9 water systems · Updated 2026-06-03
Residents of Livermore generally live with tap water that beats the CA safety average on key EPA compliance metrics.
How Livermore Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Livermore Water
- Average lead level: 0.0012 mg/L.
- Homes built before 1986: 61% — older plumbing may contain lead solder.
- Estimated remediation: $2,500 per household.
- CDC health risk index: 10.61.
Who Supplies Your Water in Livermore
3 independent water providers serve Livermore, CA — 9 systems appear in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Livermore, California (population ~88,349), covering 9 community water systems serving approximately 1,855,395 people region-wide.
No EPA violations recorded across any ZIP codes in Livermore — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Livermore: A (89/100)
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
Livermore water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0012 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 1 ZIP code
- Zone 3 (Low): 1 ZIP code
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 94550 | A | City of Livermore | 38,892 |
| 94551 | B | City of Livermore | 38,892 |
All ZIP Codes in Livermore
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 Livermore
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 Livermore
With 61% 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 Livermore's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1981 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Livermore 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.
Cost Context: What Remediation Means for Livermore Homeowners
Equity impact data for Livermore lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Livermore are relatively low compared to home values. The $1,400–$3,750 estimated range is a small fraction of median property value. Home values are 55% above the California average.
Lead Exposure Risk for Children in Livermore
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.
Routinely in Livermore, where 61% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Livermore
Over the multi-decade window covered by the National Flood Insurance Program, Livermore has accumulated 2 claims — a total that suggests more than isolated flood exposure. With 100% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Livermore has a moderate flood history with 2 FEMA claims averaging $7,000 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>$2,500</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 Livermore, CA