Tapcensus

Water quality for ZIP code 85618

ZIP 85618 covers Mammoth in Pinal County, Arizona, one of 29 ZIP codes in the county. 95 active public water systems serve the county; 80 had an EPA violation in the past three years.

Most likely your provider

Mammoth Town of AZ0411018 · Community water system · Ground water · Mammoth
Serves 1,181 people Rules violated, past 3 years 6 Unresolved 1 Last sanitary survey Dec 3, 2025 Distance 6.2 mi

Other community water systems in Pinal County

63 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Arizona Water CO San Manuel
San Manuel
4,737 1 9.7 mi
Aravaipa Water Company
Hayden
60 6 12.8 mi
Indian Hills Estates
Winkelman
30 5 20.1 mi
Arizona Water CO Oracle
Oracle
10,585 0 20.5 mi
Lago del Oro Water Company
Catalina
18,132 2 25.7 mi
Goodman Water Company
Catalina
2,668 2 26.2 mi
Kearny Town of
Kearny
1,950 2 31.6 mi
Bidegain Water Company
Kearny
49 6 33.4 mi
Breezeway Trailer Park
Kearny
38 3 33.5 mi
Saguaro Mobile Home Park
Kearny
36 4 33.6 mi
Davis Ranch Land Owners
Red Rock
40 3 40.2 mi
Park Water Company INC
Florence
427 4 45.4 mi
GW Santa Cruz Water CO Red Rock
Red Rock
4,248 1 47.1 mi
Tonto Basin Water Cactus Forest
Florence
730 0 47.9 mi
Desert Gardens RV Resort Co-Op, INC
Florence
532 2 49.4 mi
Picacho Peak RV Resort
Red Rock
400 6 49.9 mi
Adoc Eyman Unit
Florence
3,969 8 50.8 mi
Adoc Florence Asp
Florence
1,001 8 52.8 mi
Arizona Water CO Superior
Superior
4,232 0 53.8 mi
Florence Water Company
Florence
14,593 5 54.0 mi
Picacho Peak Water Company
Picacho
55 7 55.6 mi
Picacho Dwid
Picacho
285 4 55.8 mi
Pinal County Justice Complex
Florence
820 6 56.3 mi
Villa Grande Dwid
Eloy
283 7 57.1 mi
Cca Eloy Complex
Eloy
8,852 3 57.7 mi
All 64 community water systems in Pinal County
Non-community systems in Pinal County (31: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
AZ State Pks Oracle State Park
Oracle
100 0 0
Biosphere II
Oracle
221 1 0
Triangle Y Ranch Camp
Oracle
125 2 1
Usfs Cnf Pepper Sauce
Oracle
120 0 0
Arizona Ziplines
Oracle
100 0 0
EL Rancho Robles
Oracle
34 1 0
Central AZ College Aravaipa
Winkelman
100 3 1
Silver Bell Army Heliport
Marana
500 2 0
Marana Aerospace Solutions
Marana
400 4 0
Ussocom Parachute Training
Marana
48 1 0
Youth Haven Ranches
Tucson
40 2 0
Rancho Sonora Inn RV Park
Rancho Sonora Inn
125 0 0
AZ State Parks Picacho Peak
Picacho
121 1 0
Resolution Copper Company
Superior
300 2 0
Picacho Elementary School District
Picacho
200 5 0
Town of Florence Rodeo Well
Florence
500 0 0
Arizona National Guard Florence
Florence
110 1 0
GW Santa Cruz Water CO Picacho Cove
Coolidge
35 2 0
Coolidge Florence Elks Lodge 2350
Florence
100 2 0
Awc Coolidge City of Municipal Airport
Coolidge
40 1 0
JO Combs Elementary School
Queen Creek
325 4 2
McPrd San Tan Mtn Park
Queen Creek
150 0 0
Goldfield Ghost Town
Apache Junction
450 0 0
Hitching Post
Apache Junction
100 2 0
Vorelco Test Facility
Vorello
200 1 0
Nissan Technical Center
Stanfield
200 2 0
Nissan Technical Center Drivers Area
Stanfield
100 0 0
Scotts Miracle Gro
Maricopa
25 2 0
Maricopa Agriculture Center
Maricopa
100 6 0
John Wayne RV Ranch
Stanfield
125 2 0
Kelvin Simmons Coop
Riverside
28 6 1
About this data

Water systems are matched to Pinal County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Arizona records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.