Water Quality in Phoenix, AZ (85321)
EPA violation data for public water systems serving ZIP code 85321.
No Health-Based Violations
None of the 19 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are242 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 99% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
3,555
Population
19
Water Systems
242
Violations (5yr)
0
Health-Based
Location
Loading map...
Water Systems Serving This Area (19)
Phoenix City Of
All resolvedTucson City Of
All resolvedMesa City Of
All resolvedGilbert, Town Of
All resolvedChandler City Of
All resolvedScottsdale City Of
All resolvedGlendale City Of
All resolvedPeoria City Of
All resolvedTempe City Of
Ajo Improvement Company
All resolvedOrgan Pipe Nm Headquarters
All resolvedDesert Dairy
Ajo Dwid
All resolvedWhy Dwid
All resolvedAjo Improvement Co-Pd Pl
Organ Pipe Nm - Kalil Sy
Palomino Restaurant Water Sys
Ajo Public Schools
New Cornelia Hospital
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
A naturally occurring element that can cause cancer and other health effects at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Used to disinfect water — generally safe at regulated levels.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Phoenix (85321) has more violations than 99% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 242, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.