Pleasanton, CA: 2 Health Violations — 73/100 (2026)
2 ZIP codes · 8 water systems · Updated 2026-06-03
Based on current monitoring, Pleasanton holds an above-average drinking water safety record for CA — violations are infrequent and typically minor when they do appear.
How Pleasanton Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Pleasanton Water
- Your city's water systems recorded 4 violations in the past 5 years.
- Average lead level: 0.0053 mg/L.
- Homes built before 1986: 55% — older plumbing may contain lead solder.
- Estimated remediation: $2,800 per household.
- CDC health risk index: 9.67.
Who Supplies Your Water in Pleasanton
Pleasanton, CA is covered by 3 major water utilities out of 8 federally tracked systems, each managing its own pipes, treatment processes, and EPA filings. What a household gets from the tap depends on which provider's system serves that address.
Overview
We track water quality and home safety data for 2 ZIP codes in Pleasanton, California (population ~79,205), covering 8 community water systems serving approximately 1,856,021 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Pleasanton: B (73/100)
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
Pleasanton water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0053 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): 2 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 6 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 94566 | B | 2 | 1 | City of Pleasanton |
| 94588 | B | 2 | 1 | Dublin San Ramon Services District |
All ZIP Codes in Pleasanton
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 Pleasanton
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
Top Contaminants in Pleasanton Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Pleasanton
With 55% 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
When more than half a city's housing predates the 1986 federal ban on lead solder, plumbing-era lead risk becomes a citywide concern rather than an exception. Pleasanton's median build year of 1986 places it squarely in that category.
Over half of homes in Pleasanton 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 Pleasanton Homeowners
Because property values in Pleasanton comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Pleasanton are relatively low compared to home values. The $1,550–$4,350 estimated range is a small fraction of median property value. Home values are 116% above the California average.
Lead Exposure Risk for Children in Pleasanton
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.
Older stock in Pleasanton represents 55% of the inventory, and citywide monitoring runs at or above the federal action level — making an in-home read a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Pleasanton
Measured across the NFIP's multi-decade tracking period, Pleasanton shows a moderate flood record — 27 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.
Pleasanton has a moderate flood history with 27 FEMA claims averaging $16,030 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>$2,800</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 Pleasanton, CA