Lead in Casa Grande, AZ Drinking Water
Lead data for Casa Grande, Arizona · 71,194 residents · 8 ZIP codes
ZipCheckup's reading of Lead in Casa Grande, Arizona: the highest detected level is 1 ppb; the EPA limit is 15 ppb (action level). Lead carries a high health-risk designation.
At elevated levels, Lead is a recognized health concern in drinking water; in Casa Grande, Arizona, it has been detected in recent samples logged through federal compliance reporting.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-07-13
Lead in Casa Grande Tap Water
Lead has been detected in Casa Grande, Arizona drinking water at a maximum level of 1 ppb — below the EPA action level of 15 ppb (action level).
This analysis covers 71,194 residents across 8 ZIP codes in Casa Grande.
Casa Grande's overall water quality grade is B (82/100).
Is Lead in Casa Grande Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 / NSF 58 and testing your water independently.
Lead Levels by ZIP Code
| ZIP Code | Lead Level | EPA Limit | Status |
|---|---|---|---|
| 85122 | 1 ppb | 15 ppb (action level) | OK |
| 85130 | 1 ppb | 15 ppb (action level) | OK |
| 85193 | 1 ppb | 15 ppb (action level) | OK |
| 85194 | 1 ppb | 15 ppb (action level) | OK |
| 85222 | 1 ppb | 15 ppb (action level) | OK |
| 85230 | 1 ppb | 15 ppb (action level) | OK |
| 85293 | 1 ppb | 15 ppb (action level) | OK |
| 85294 | 1 ppb | 15 ppb (action level) | OK |
Average lead level across Casa Grande: 1 ppb
EPA Violations for Lead in Casa Grande
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2024-10-01 | Lead (Resolved) | Resolved | 85194 |
| 2024-07-01 | Lead (Resolved) | Resolved | 85194 |
| 2024-04-01 | Lead (Known) | Known | 85194 |
| 2024-01-01 | Lead (Resolved) | Resolved | 85194 |
| 2023-10-01 | Lead (Resolved) | Resolved | 85194 |
| 2023-07-01 | Lead (Known) | Known | 85194 |
| 2023-04-01 | Lead (Known) | Known | 85194 |
| 2023-01-01 | Lead (Known) | Known | 85194 |
| 2022-10-01 | Lead (Known) | Known | 85194 |
| 2022-07-01 | Lead (Known) | Known | 85194 |
| 2022-04-01 | Lead (Known) | Known | 85194 |
| 2022-01-01 | Lead (Known) | Known | 85194 |
| 2021-10-01 | Lead (Known) | Known | 85194 |
| 2021-07-01 | Lead (Known) | Known | 85194 |
Health Effects of Lead
- Brain development delays and reduced IQ in children
- Behavioral problems and learning disabilities
- High blood pressure and kidney damage in adults
- Increased risk of premature birth in pregnant women
Health risk severity: High. Governed by the Lead and Copper Rule Revisions (LCRR/LCRI).
How Lead Gets Into Drinking Water
- Corrosion of lead service lines (pipes connecting water main to home)
- Lead solder in copper plumbing joints (pre-1986 homes)
- Brass fixtures and faucets manufactured before 2014
- Stagnant water that sits in lead-containing pipes overnight
What to Do About Lead in Casa Grande Water
- Install an NSF 53 or NSF 58 certified filter at kitchen sink
- Run cold water for 30 seconds before using for drinking or cooking
- Use cold water only for cooking and preparing formula
- Consider whole-home reverse osmosis if lead service line is present
Look for filters certified under NSF 53 / NSF 58 for lead removal.