Rowland Heights, CA Home Safety: Home Safety 75/100
1 ZIP code · 4 water systems · Updated
ZipCheckup grade for Rowland Heights: B.
This ZIP looks solid, with a few items worth a quick check.
Rowland Heights, CA: reliable drinking water, above-average safety record, few violations.
How Rowland Heights Compares
Data: EPA SDWIS
Key Facts for Rowland Heights Residents
- Homes built before 1986: 74% - older plumbing may contain lead solder.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 10.71.
Rowland Heights's Water Providers
With 3 utilities splitting service in Rowland Heights, CA, water accountability is distributed across 4 systems on the federal record.
- B
- B
- B
Overview
We track home safety data for 1 ZIP code in Rowland Heights, California (population ~43,137), covering 4 community water systems serving approximately 168,524 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Home Safety Score
Average Home Safety Score for Rowland Heights: B (75/100)
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
Rowland Heights water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 91748 | B | Rowland Water District | 56,100 |
All ZIP Codes in Rowland Heights
- 91748 [B]
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.
Rowland Heights 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
Rowland Heights Infrastructure Age
With 74% 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
The median home in Rowland Heights was built in 1974 - a figure that places most of the city's residential stock in the era when lead solder was still standard in copper plumbing. Homes built before 1986 may have lead-soldered joints; those built before 1970 face the additional possibility of lead pipes in the service line itself.
Over half of homes in Rowland Heights 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 Rowland Heights
While no remediation project is entirely without cost, the relationship between estimated remediation and property values in Rowland Heights is notably favorable - the equity share is small enough that the household financial perspective is one of proportionality rather than pressure, and most homeowners can treat it as routine planning rather than a significant financial event.
Remediation costs in Rowland Heights are relatively low compared to home values. The $1,100–$3,400 estimated range is a small fraction of median property value. Home values are 6% above the California average.
Rowland Heights: 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.
In recent monitoring under the Lead and Copper Rule, citywide samples for Rowland Heights have approached or crossed the regulatory action level on multiple occasions. Combined with 74% of stock dating from the pre-rule era, the picture supports baseline single-tap reads as a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Rowland Heights: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Rowland Heights contains 5 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $5,525. 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>$2,100</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.
Deep Dive Reports
Detailed analysis for Rowland Heights, CA