Porter Ranch, CA Home Safety: Home Safety 75/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Porter Ranch: B.
This ZIP looks solid, with a few items worth a quick check.
In current CA EPA data, Porter Ranch's tap water sits in the high-safety tier.
How Porter Ranch Compares
Data: EPA SDWIS
Key Facts for Porter Ranch Residents
- Average lead level: 0.0039 mg/L.
- Homes built before 1986: 59% - older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 10.71.
Porter Ranch's Water Providers
Most residential addresses in Porter Ranch, CA are served by a single water utility - the dominant system among the 1 provider tracked in federal data.
- B
Overview
We track home safety data for 1 ZIP code in Porter Ranch, California (population ~37,068), covering 1 community water system serving approximately 3,875,566 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 Porter Ranch: 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
Porter Ranch water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0039 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 |
|---|---|---|---|
| 91326 | B | Los Angeles-city, Department of Water & Power | 3,875,566 |
All ZIP Codes in Porter Ranch
- 91326 [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.
Porter Ranch 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
Porter Ranch Infrastructure Age
With 59% 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
What does a median build year of 1970 mean for water safety in Porter Ranch? It means the majority of the city's residential plumbing was installed before 1986, when lead solder was federally banned, and a large share may predate 1970, when lead pipes were commonly used - making plumbing age a central variable in household-level lead risk across much of the city.
Over half of homes in Porter Ranch 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 Porter Ranch
Low proportionality - that's the Porter Ranch picture when remediation costs are placed against typical home equity.
Remediation costs in Porter Ranch are relatively low compared to home values. The $800–$2,600 estimated range is a small fraction of median property value. Home values are 37% above the California average.
Porter Ranch: 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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 59% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Porter Ranch.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Porter Ranch: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Porter Ranch contains 20 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,908. 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>$1,600</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 Porter Ranch, CA