The C shown for Santa Clarita, CA is an average of Home Safety Scores across the city's ZIP codes; that composite blends several data sources, so it can move for reasons unrelated to water, and it is not a measurement of what comes out of any tap in the city.

Data: EPA SDWIS

Overview

We track home safety data for 5 ZIP codes in Santa Clarita, California (population ~62,343), covering 2 community water systems serving approximately 298,895 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 5 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 Santa Clarita: C (58/100)

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

Santa Clarita water systems draw from: 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 2 ZIP codes with known status exceed the EPA lead action level

Radon Risk

5 of 5 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.

Areas with No Violations

All ZIP Codes in Santa Clarita

• 91350 [C]
• 91380
• 91382
• 91383
• 91390 [C]

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.

Santa Clarita: Remediation Cost in Perspective

Estimated remediation for Santa Clarita is a small fraction of median property value - one percent or less - though the ratio does not describe any single household.

Median Home Value

$843,200

Est. Remediation

$600

Remediation as % of home value 0.1%

Estimated remediation costs in Santa Clarita can be compared with local home values. The $400–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 14% above the California average.

Historical Flood-Claim Evidence for Santa Clarita

54

Total FEMA Flood Claims

$11,808

Avg Reported Sum With Payment Data

50%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Santa Clarita contains 54 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,808. Among ZIP codes with claim records, 50% 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 $600 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.