Sun City, AZ: 27 Violations — 76/100 (2026)
3 ZIP codes · 5 water systems · Updated 2026-06-03
Water systems serving Sun City hold a strong EPA compliance record — the city places among the better-performing areas in AZ with few health-based violations on file.
How Sun City Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Sun City Water
- Your city's water systems recorded 27 violations in the past 5 years.
- Average lead level: 0.0003 mg/L.
- Homes built before 1986: 75% — older plumbing may contain lead solder.
- Estimated remediation: $1,400 per household.
- CDC health risk index: 11.3.
Who Supplies Your Water in Sun City
Residential water service in Sun City, AZ is divided among 3 separate utilities, drawn from 5 systems on file with federal regulators.
Overview
We track water quality and home safety data for 3 ZIP codes in Sun City, Arizona (population ~48,447), covering 5 community water systems serving approximately 227,104 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Sun City: B (76/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Sun City water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0003 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 3 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 16 | 3 |
| Lead and Copper Rule | Treatment Technique | 8 | 3 |
| Total Coliform | Microbiological | 4 | 3 |
| Surface Water Treatment Rule | Treatment Technique | 4 | 3 |
| Revised Total Coliform Rule | Microbiological | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 85351 | B | 9 | 0 | Epcor - Sun City |
| 85372 | B | 9 | 0 | Epcor - Sun City |
| 85373 | B | 9 | 0 | Epcor - Sun City |
All ZIP Codes in Sun City
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
Updated daily.
Health Outcomes in Sun City
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
Top Contaminants in Sun City Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Sun City
With 75% 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
Federal plumbing rules changed in two stages — lead pipes were phased out before 1970, and lead solder was banned in 1986 — but in Sun City, where the median build year is 1974, most of the housing was already in place before those rules took effect. The materials installed under older standards remain embedded in a substantial portion of the residential inventory today.
Over half of homes in Sun City 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.
Cost Context: What Remediation Means for Sun City Homeowners
Within the Sun City market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Sun City are relatively low compared to home values. The $667–$2,233 estimated range is a small fraction of median property value. Home values are 4% above the Arizona average.
Lead Exposure Risk for Children in Sun City
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.
Wherever 75% of local housing was built before solder rules changed — as is the case in Sun City — a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Sun City
NFIP data for Sun City shows a modest claim record and limited flood zone footprint — a combination that places flood exposure well below the threshold where water quality becomes an active planning concern. The connection between flooding and water safety is real during major events anywhere, but it stays in the background here rather than rising to an active local risk factor.
Sun City has a relatively low flood history with 3 FEMA claims on record. While risk is limited, severe weather events can still impact water infrastructure.
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. Flood damage can add significantly to the estimated <strong>$1,400</strong> remediation cost per household.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Sun City, AZ