San Gabriel, CA Home Safety: Home Safety 67/100
3 ZIP codes · 7 water systems · Updated
ZipCheckup grade for San Gabriel: C.
A mixed picture - some signals here are worth your attention.
While San Gabriel avoids CA's lowest safety tiers, a portion of its water systems have logged documented violations.
How San Gabriel Compares
Data: EPA SDWIS
Key Facts for San Gabriel Residents
- Average lead level: 0.0005 mg/L.
- Homes built before 1986: 85% - older plumbing may contain lead solder.
- Estimated remediation: $1,667 per household.
- CDC health risk index: 10.71.
San Gabriel's Water Providers
In San Gabriel, CA, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 7 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
- B
- C
- C
Overview
We track home safety data for 3 ZIP codes in San Gabriel, California (population ~61,545), covering 7 community water systems serving approximately 392,901 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 3 ZIP codes.
The available EPA record reports 0 violations for 2 ZIP codes with a reported violation count.
Home Safety Score
Average Home Safety Score for San Gabriel: C (67/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
San Gabriel water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0005 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status 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.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 91775 | B | Sunny Slope Water Company | 25,252 |
| 91776 | C | San Gabriel County Water District | 39,345 |
All ZIP Codes in San Gabriel
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
San Gabriel 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
San Gabriel Infrastructure Age
With 85% 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
San Gabriel's housing stock is predominantly older, with a median build year of 1962 that reflects decades of construction before federal plumbing standards were tightened. The 1986 ban on lead solder and the pre-1970 era of lead service lines are both relevant benchmarks here - a significant share of the residential inventory predates one or both of those cutoffs, creating an elevated baseline for plumbing-related lead risk that aggregate water quality data may not fully reflect at the household level.
Over half of homes in San Gabriel 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 San Gabriel
Within the San Gabriel market, estimated remediation claims a small portion of typical property equity - the financial burden is proportionally low.
Remediation costs in San Gabriel are relatively low compared to home values. The $933–$2,600 estimated range is a small fraction of median property value. Home values are 41% above the California average.
San Gabriel: 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.
If 85% of the San Gabriel inventory comes from before the federal ban on lead-bearing solder - and if utility samples sit at or near 0.015 mg/L - the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
San Gabriel: NFIP Claim Records and Water-Quality Context
Historical NFIP data for San Gabriel contains 5 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $6,886. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The <strong>$1,667</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
What You Can Do in San Gabriel
- 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 85% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for San Gabriel, CA