Water Quality in Flagstaff, AZ (86001)
EPA violation data for public water systems serving ZIP code 86001.
Active Health Violations
26 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 99% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
37,312
Population
54
Water Systems
223
Violations (5yr)
26
Health-Based
Location
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Water Systems Serving This Area (54)
Flagstaff City Of
All resolvedHappy Jack Rv Park
Usfs Conf Pine Flat Campground
3 health-basedWl Gore-Flagstaff Ranch
Woody Mountain Rv Park
Usfs Conf Cave Springs
Usfs Conf Crescent Moon Ranch
1 health-basedKachina Village Mhp
Usfs Conf Rock Crossing
All resolvedWagner Spring
Peakview Country Store
All resolvedUsfs Conf Oak Creek Visitor Center
All resolvedUsfs Conf Pinegrove Camp
Grand Canyon Railway
El Paso Ng-Leupp Station
Usfs Knf Tusayan Admin
2 health-basedCoconino County Cataract
Majestic View Water Improvement District
5 health-basedUsfs Conf Knoll Lake Camp
All resolvedSki Lift Lodge
All resolvedUsfs Conf Manzanita Campground
1 health-basedA1 Ranch Dwid
Usfs Conf Clear Creek Campground
3 health-basedUsfs Conf Beaver Creek
1 health-basedBlack Mesa Pipeline-Kayenta
Usfs Conf Double Springs
3 health-basedUsfs Conf Blue Ridge Ranger Station
All resolvedFort Valley Lodge
Lockett Estates
2 health-basedUsfs-Conf-Flagstaff Hotsh
Woody Mountain Mhp
Usfs Conf Banjo Bill Cg
Usfs Knf Big Springs
2 health-basedHanks Trading Post
Usfs Conf Happy Jack Work Center
Black Mesa Pipeline
El Paso Natl Gas-Hackberry
Black Mesa Pipeline-Gray Mtn
Az Game & Fish-Sterling Spgs
Transwestern Pipeline Company
Transwestern Pipeline-Flagstaf
El Paso Natl Gas-Dilkon Comp
Black Mesa Pipeline-Seligman
Black Mesa Pipeline-Williams
El Paso Natl Gas-Topock
Wupatki-Sunset Crater-Heiser
Lowell Observatory
Coconino Nf-Watershed Camp
Little Profit Farms
Antelope Hills Motel
Cosnino Equestrian Estates
Coconino County Health Dept
Huc Regional Water System
Nacog Headstart Chino Valley
3 health-basedContaminants Found
Missed testing deadlines — not a detection of bacteria.
A naturally occurring element that can cause cancer and other health effects at high levels.
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.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Flagstaff (86001) has more violations than 99% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 223.
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
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.