Redlands, CA: 12 Health Violations — 69/100 (2026)
3 ZIP codes · 7 water systems · Updated 2026-06-03
Based on current EPA data, Redlands, CA reflects fair but uneven tap water safety.
How Redlands Compares
Data: EPA SDWIS Last verified: 2026-06-03
Redlands Water: The Quick Version
- Your city's water systems recorded 15 violations in the past 5 years.
- Average lead level: 0.0029 mg/L.
- Homes built before 1986: 70% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 11.13.
Water Systems Serving Redlands
Redlands, CA is covered by 3 major water utilities out of 7 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 3 ZIP codes in Redlands, California (population ~79,103), covering 7 community water systems serving approximately 896,643 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. 12 health-based violations documented.
Home Safety Score
Average Home Safety Score for Redlands: C (69/100)
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
Redlands water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0029 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): 1 ZIP code
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Contaminant 1032 | Other | 12 | 3 |
| Stage 2 DBP Rule | Treatment Technique | 8 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92373 | C | 5 | 4 | Redlands City Municipal Utility District-water Div |
| 92374 | C | 5 | 4 | Redlands City Municipal Utility District-water Div |
| 92375 | B | 5 | 4 | Redlands City Municipal Utility District-water Div |
All ZIP Codes in Redlands
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 Redlands
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
Key Contaminants Detected in Redlands
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Redlands's Housing Stock?
With 70% 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. Redlands's median build year of 1974 places it squarely in that category.
Over half of homes in Redlands 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.
Redlands: Remediation Cost in Perspective
Because property values in Redlands comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Redlands are relatively low compared to home values. The $1,633–$5,133 estimated range is a small fraction of median property value. Home values are 3% below the California average.
Protecting Children from Lead in Redlands
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 Redlands represents 70% 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.
Climate-Related Water Risk for Redlands
Within the NFIP's national dataset, Redlands falls in moderate-exposure territory — 19 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Redlands has a moderate flood history with 19 FEMA claims averaging $789 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>$3,000</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.
What You Can Do in Redlands
- 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. Filters rated for Contaminant 1032 can reduce the most common contaminant found in Redlands's water.
- Check your home's plumbing. With 70% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Redlands, CA