La Puente, CA Water Safety: 83/100 (2026)
4 ZIP codes · 6 water systems · Updated 2026-06-03
Although water quality varies across any metro, La Puente's systems collectively post above-average compliance scores for CA — and documented violations are few.
How La Puente Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for La Puente Residents
- Average lead level: 0.0023 mg/L.
- Estimated remediation: $1,250 per household.
- CDC health risk index: 10.71.
La Puente's Water Providers
Water service in La Puente, CA is split across 3 utilities out of 6 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 4 ZIP codes in La Puente, California (population ~106,509), covering 6 community water systems serving approximately 485,904 people region-wide.
No EPA violations recorded across any ZIP codes in La Puente — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for La Puente: B (83/100)
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
La Puente water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0023 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): 4 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 91744 | B | La Puente Valley Cwd | 8,243 |
| 91746 | B | City of Industry Waterworks Systems | 6,158 |
| 91747 | B | La Puente Valley Cwd | 8,243 |
| 91749 | B | La Puente Valley Cwd | 8,243 |
All ZIP Codes in La Puente
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.
La Puente 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
How Remediation Costs Compare in La Puente
When estimated remediation is placed alongside median property values in La Puente, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in La Puente are relatively low compared to home values. The $550–$2,100 estimated range is a small fraction of median property value. Home values are 18% below the California average.
La Puente: 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.
Lead risk in La Puente appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
La Puente: Flood History & Water Damage Risk
La Puente's flood exposure sits in the moderate range: 6 NFIP claims on record and 50% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
La Puente has a moderate flood history with 6 FEMA claims averaging $131 per payout. 50% 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>$1,250</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 La Puente, CA