Water Quality in Flagstaff, AZ (86004)
EPA violation data for public water systems serving ZIP code 86004.
Active Health Violations
20 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 95% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
36,394
Population
17
Water Systems
86
Violations (5yr)
20
Health-Based
Location
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Water Systems Serving This Area (17)
Flagstaff City Of
All resolvedDoney Park Water
All resolvedSunset Crater Natl Monum
Wupatki National Monument
Sturgeon Cromer Elem School
All resolvedWalnut Canyon Natl Monument
Painted Desert Demo Project Star School
1 health-basedStar Charter School
1 health-basedGreen Valley Mhp
18 health-basedUsfs-Conf-Dairy Spring Cg
Camp Colton Flagstaff School
Twin Arrows Truck Stop
Usfs-Conf-Ashurst Cg
Usfs-Conf-Lakeview Cg
Usfs-Conf-Forked Pine Sth
Usfs-Conf-Forked Pine Nrt
Rainbow Girls Foundation
Contaminants Found
A naturally occurring element that can cause cancer and other health effects at high levels.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Flagstaff (86004) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 86.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.