Casa Grande Drinking Water Quality
What's Really in Your Tap Water?
Casa Grande tap water has notable issues that residents should consider. With 172 ppm hardness (10.1 gpg), expect some mineral deposits over time. Lead levels test well below the EPA action level. There have been 62 violations recorded over the past 3 years.
Action Needed
Quality issues detected
10.1 GPG hardness
Lead
Below EPA action level
EPA action level: 15 ppb
Hardness
Hard water
US Average: 100 ppm
Is Casa Grande Tap Water Safe to Drink?
Casa Grande tap water has significant quality concerns that may require action.
- •30 health-based violations in the past 3 years across 8 water systems.
- •We strongly recommend testing your water at home and using a certified water filter.
The data below shows test results from 8 water utilities serving 141K people in the Casa Grande area. Water quality testing is conducted regularly and reported to the EPA.
How Hard is Casa Grande Water?
172 ppm
10.1 grains per gallon
Hard water can cause scale buildup in pipes and appliances. A water softener may be beneficial.
Impact on Your Home
Shower
May dry out skin & hair
Kitchen
Spots on dishes
Laundry
Clothes may feel stiff
Appliances
Scale buildup
Regional Comparison
Values in ppm (mg/L as CaCO₃)
Based on 9 water samples from Pinal County.
Your pipes tell a different story
The data above shows what leaves the treatment plant—not what comes out of your faucet. Old pipes, lead solder, and building plumbing can add contaminants the city never tests for. Know exactly what's in your Casa Grande tap water.
Home test kits detect lead, bacteria, pesticides, and 100+ other contaminants. Results in 5-10 business days from certified labs.
Lead & Contaminants
Understanding lead levels and water quality violations in Casa Grande
Lead Test Results
90th Percentile Lead Level
0 ppb
Casa Grande lead levels are well within safe limits.
Regular testing is still recommended, as lead can enter water through household plumbing.
Last sampled: 2024-12-31
About Lead in Drinking Water
What is Lead in Water?
Lead is a toxic metal that can dissolve into drinking water from older pipes, solder, and fixtures. It's invisible, tasteless, and odorless, making testing the only way to detect it. The EPA has set an action level of 15 ppb, though they emphasize there is no safe level of lead exposure.
Potential Health Effects
Developmental delays, learning difficulties, lower IQ, behavioral issues
High blood pressure, kidney damage, reproductive issues
How to Reduce Exposure
- •Run water for 30 seconds to 2 minutes before drinking, especially in the morning
- •Use cold water for cooking and drinking (hot water dissolves more lead)
- •Install a NSF-certified filter designed to remove lead
- •Test your water, especially if your home was built before 1986
EPA Compliance History
Action Recommended
Active health-based violations detectedConsider using a certified water filter until violations are resolved. Contact your utility for updates on corrective actions.
3-Year Violation Summary
62
Total Violations
30
Health-Related
32
Administrative
Health-Related Violations
Contaminant exceeded EPA safety limits. May require filter or alternative water source.
Administrative Violations
Missed testing deadlines or reporting. Does not indicate water quality issues.
Who Provides Casa Grande's Water?
Utility Name
ARIZONA WATER CO - PINAL VALLEY
EPA System ID (PWSID)
AZ0411009
Primary Water Source
Groundwater
Population Served
141K
Frequently Asked Questions
Common questions about Casa Grande tap water quality
Nearby Cities in Arizona
Phoenix
Very Hard water
Tucson
Moderate water
Mesa
Very Hard water
Chandler
Very Hard water
Gilbert
Very Hard water
Scottsdale
Very Hard water
This data is for informational purposes only. Water quality can vary by neighborhood and building. For official reports, contact your local water utility or the EPA. Learn about our methodology