Chandler, AZ: 16 Health Violations — 78/100 (2026)
8 ZIP codes · 8 water systems · Updated 2026-06-03
Across Chandler, EPA monitoring data shows low violation rates and healthy safety margins — a pattern that places the city well above AZ's average for drinking water compliance across recent reporting cycles.
How Chandler Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Chandler, AZ
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Chandler.
Chandler Water: The Quick Version
- Your city's water systems recorded 160 violations in the past 5 years.
- Average lead level: 0.0031 mg/L.
- Homes built before 1986: 22% — older plumbing may contain lead solder.
- Estimated remediation: $2,250 per household.
- CDC health risk index: 11.41.
Water Systems Serving Chandler
Residential addresses in Chandler, AZ are served by 3 primary water providers out of 8 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 8 ZIP codes in Chandler, Arizona (population ~297,943), covering 8 community water systems serving approximately 518,227 people region-wide.
8 of 8 ZIP codes (100%) have recorded EPA violations. 16 health-based violations documented.
Home Safety Score
Average Home Safety Score for Chandler: B (78/100)
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
Chandler water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0031 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): 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
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 45 | 8 |
| Barium | Inorganic | 18 | 8 |
| Lead | Inorganic | 18 | 8 |
| Contaminant 2035 | Other | 18 | 8 |
| Atrazine | Organic | 18 | 8 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 85224 | B | 20 | 2 | City of Chandler |
| 85225 | B | 20 | 2 | City of Chandler |
| 85226 | B | 20 | 2 | City of Chandler |
| 85244 | B | 20 | 2 | City of Chandler |
| 85246 | B | 20 | 2 | City of Chandler |
| 85248 | B | 20 | 2 | City of Chandler |
| 85249 | B | 20 | 2 | City of Chandler |
| 85286 | B | 20 | 2 | City of Chandler |
All ZIP Codes in Chandler
- 85224 [B] — 20 violations ⚠
- 85225 [B] — 20 violations ⚠
- 85226 [B] — 20 violations ⚠
- 85244 [B] — 20 violations ⚠
- 85246 [B] — 20 violations ⚠
- 85248 [B] — 20 violations ⚠
- 85249 [B] — 20 violations ⚠
- 85286 [B] — 20 violations ⚠
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.
CDC Health Data for Chandler
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
Key Contaminants Detected in Chandler
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Chandler's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
For most of Chandler's housing stock, construction occurred after 1986 — when lead solder in plumbing was federally prohibited. The median build year of 1996 broadly reflects that newer profile.
Most homes in Chandler were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Chandler: Remediation Cost in Perspective
How much of a Chandler home's value does documented remediation represent? A small fraction — the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.
Remediation costs in Chandler are relatively low compared to home values. The $1,169–$3,825 estimated range is a small fraction of median property value. Home values are 60% above the Arizona average.
Protecting Children from Lead in Chandler
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.
Even with citywide samples reading clean and just 22% of Chandler homes dating to the pre-rule era, individual-faucet conditions remain a separate question that aggregate utility data cannot resolve for one specific address. That gap is structural, not a function of severity.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Chandler
Multiple flood events have been recorded for Chandler through the NFIP — 16 claims in total, with 63% of ZIP codes in FEMA-designated zones — pointing to a flood exposure profile that merits inclusion in a water quality assessment without reaching high-severity planning territory.
Chandler has a moderate flood history with 16 FEMA claims averaging $104,841 per payout. 63% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$2,250</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Chandler, AZ