Looking at federal monitoring data for Casa Grande, AZ: the city clears benchmarks set under the Safe Drinking Water Act with room to spare - recorded exceedances are rare, and the systems serving local households have not triggered any pattern of repeat deficiencies in recent cycles.

Data: EPA SDWIS

Overview

We track home safety data for 8 ZIP codes in Casa Grande, Arizona (population ~71,194), covering 5 community water systems serving approximately 146,854 people region-wide. The EPA snapshots used for this build directly map water systems to 3 of 8 ZIP codes.

3 of 3 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 19 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Casa Grande: B (74/100)

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

Casa Grande water systems draw from: Groundwater.

Lead & Copper

• Average lead level (90th percentile): 0.0012 mg/L (EPA action level: 0.015 mg/L)
• 0 of 3 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): 8 ZIP codes
• Zone 3 (Low): 0 ZIP codes

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Top Contaminants

Areas with Most Violations

All ZIP Codes in Casa Grande

• 85122 [B] - 2 violations
• 85130
• 85193 - 25 violations ⚠
• 85194 - 72 violations ⚠
• 85222
• 85230
• 85293
• 85294

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.

How Remediation Costs Compare in Casa Grande

Property equity in Casa Grande runs well ahead of estimated remediation costs - a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.

Median Home Value

$242,500

Est. Remediation

$1,738

Remediation as % of home value 0.7%

Remediation costs in Casa Grande are relatively low compared to home values. The $838–$2,888 estimated range is a small fraction of median property value. Home values are 21% below the Arizona average.

Casa Grande: Lead Risk & Vulnerable Populations

0.0012

mg/L Avg Lead (Limit: 0.015)

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.

Lead risk in Casa Grande appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Casa Grande: NFIP Claim Records and Water-Quality Context

26

Total FEMA Flood Claims

$25,693

Avg Reported Sum With Payment Data

80%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Casa Grande contains 26 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $25,693. Among ZIP codes with claim records, 80% 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>$1,738</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.