County · Arizona
Cochise County, Arizona: drinking water records
This overview covers 21 ZIP codes and 50 community water systems in Cochise County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Us Army Fort Huachuca AZ0402078 | 15,603 | 300 | 6 | 1 | 0 ppb |
| Pueblo del Sol Water Company AZ0402044 | 12,804 | 240 | 0 | 8 | 0 ppb |
| Arizona Water Co - Sierra Vista AZ0402004 | 9,175 | 420 | 2 | 1 | 0 ppb |
| Arizona Water Co - Bisbee AZ0402001 | 8,707 | 60 | 5 | 2 | 0 ppb |
| Bella Vista City Water System AZ0402010 | 20,045 | 900 | 1 | 0 | 1 ppb |
| Douglas City of AZ0402014 | 16,656 | 360 | 0 | 0 | 0 ppb |
| Benson, City of Water System AZ0402005 | 5,355 | 240 | 0 | 0 | 0 ppb |
| City of Willcox AZ0402035 | 3,236 | 60 | 0 | 0 | 0 ppb |
| Bisbee Douglas Intl Airport AZ0402061 | 2,600 | 0 | 0 | 1 | 0 ppb |
| Town of Huachuca City AZ0402019 | 1,750 | 0 | 0 | 1 | 0 ppb |
| Pomerene Dwid AZ0402012 | 1,618 | 0 | 0 | 8 | 0 ppb |
| Southland Utilities - Golden Acres AZ0402029 | 1,614 | 0 | 0 | 3 | 0 ppb |
| Tombstone City of AZ0402033 | 1,545 | 0 | 0 | 5 | 0 ppb |
| Mescal Lakes Water System AZ0402052 | 1,390 | 0 | 0 | 1 | 0 ppb |
| Clear Springs Utility Main AZ0402008 | 1,385 | 0 | 0 | 1 | 0 ppb |
| St David Dwid AZ0402039 | 1,255 | 0 | 0 | 2 | 0 ppb |
| Elfrida Wid AZ0402017 | 800 | 0 | 0 | 7 | 7 ppb |
| Naco Water Co Main AZ0402024 | 658 | 0 | 0 | 1 | 0 ppb |
| East Slope Water - West AZ0402094 | 655 | 0 | 0 | 1 | 6.9 ppb |
| Bowie Wid AZ0402006 | 489 | 0 | 0 | 2 | 3 ppb |
| Sierra Vista Mh Village AZ0402101 | 328 | 0 | 0 | 1 | 0.3 ppb |
| San Simon Dwid AZ0402027 | 312 | 0 | 0 | 37 | 0 ppb |
| Willow Lakes Property Owners Assoc AZ0402042 | 190 | 0 | 0 | 7 | 1 ppb |
| Whetstone Ranch Water System AZ0402125 | 183 | 0 | 0 | 1 | 3 ppb |
| Monte Vista Water Company AZ0402043 | 150 | 0 | 0 | 11 | 4.6 ppb |
ZIP reports in Cochise County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 85606.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.