Rosemead, CA: 9 Violations - Home Safety 72/100
3 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Rosemead: B.
This ZIP has a few items worth a quick check.
In the dataset behind this page, Rosemead, CA receives one of the two highest grades; read the compliance history system by system for details.
How Rosemead Compares
Data: EPA SDWIS
Rosemead Water: The Quick Version
- Your city's water systems recorded 9 violations since 2021.
- Estimated remediation: $550 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.71.
Water Systems Serving Rosemead
When a city is linked to 5 water systems, as Rosemead, CA is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.
- B
- B
- B
Overview
We track home safety data for 3 ZIP codes in Rosemead, California (population ~58,893), covering 5 community water systems serving approximately 364,714 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 3 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Rosemead: B (72/100)
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
Rosemead water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
3 of 3 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Trichloroethylene | Organic | 8 | 1 |
| Tetrachloroethylene | Organic | 8 | 1 |
| Nitrate | Inorganic | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 91770 | B | 9 | 0 | Gswc-south San Gabriel |
All ZIP Codes in Rosemead
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.
CDC Health Data for Rosemead
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Rosemead
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Rosemead: Remediation Cost in Perspective
How large is the remediation estimate next to home prices in Rosemead? Small in relative terms: it amounts to 1% of the median value or less, although the dollar figure below is still an estimate and actual costs vary by property and contractor.
Estimated remediation costs in Rosemead can be compared with local home values. The $350–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 3% below the California average.
Historical Flood-Claim Evidence for Rosemead
Historical NFIP data for Rosemead contains 3 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $582. 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 $550 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.
Deep Dive Reports
Detailed analysis for Rosemead, CA