Apr 15, 2026 · 7 min read
PFAS "Forever Chemicals" in US Drinking Water: 2026 Update
PFAS contamination affects an estimated 200 million Americans. Here's what the latest EPA enforcement means for your tap water.
ZIP Code 85138 Water Quality
Arizona · 112,059 people served · 30 water systems
C
FairZIP code 85138 is in Arizona and is a mid-sized community from a drinking-water-service perspective, with 112,059 people served by 30 EPA-registered public water systems. It corresponds to MARICOPA.
Within ZIP code 85138, the EPA Safe Drinking Water Information System (SDWIS) records 4 health-based violations during the past five years across 30 water systems serving this postal area. The grade of C reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
Loading map...
Cities in ZIP 85138
Water Systems Serving 85138
GW OCOTILLO WATER - RANCHO DEL SOL LINDO
PWSID: AZ0410173
3,128 served
GW SAGUARO DIST WATER CO - MIRABELL
PWSID: AZ0410178
180 served
GW OCOTILLO WATER - THUNDERHEAD
PWSID: AZ0410179
174 served
GW SANTA CRUZ WATER -TWIN HAWKS WATER
PWSID: AZ0411460
57 served
GW SANTA CRUZ WATER - MARICOPA SW
PWSID: AZ0411575
1,170 served
GW SANTA CRUZ WATER CO - RED ROCK
PWSID: AZ0411160
3,813 served
GW SANTA CRUZ WATER - CP WATER CO
PWSID: AZ0411151
37 served
GW OCOTILLO WATER - SILVERBELL WEST
PWSID: AZ0410162
263 served
GW FARMERS WATER CO - SANTA RITA SPRINGS
PWSID: AZ0410213
3,990 served
GW OCOTILLO WATER - SIERRITA FOOTHILLS
PWSID: AZ0410270
84 served
GW FARMERS WATER CO - SAHUARITA HIGHLAND
PWSID: AZ0410414
492 served
GW SAGUARO DIST WATER CO - TALA WAY
PWSID: AZ0410283
255 served
GW SAGUARO DIST WATER CO - AMBER ANN
PWSID: AZ0410317
108 served
GW -BWC, INC.- WPE #6
PWSID: AZ0407733
69 served
GW SAGUARO DIST WATER CO - LAS QUINTAS
PWSID: AZ0410064
3,720 served
GW- BWC, INC- ROSEVIEW
PWSID: AZ0407082
66 served
GW -BWC, INC.- NSWC
PWSID: AZ0407179
319 served
GW -BWC, INC- SUNSHINE
PWSID: AZ0407071
604 served
GW -BWC, INC- BUCKEYE RANCH
PWSID: AZ0407618
422 served
GW- BWC, INC- DIXIE
PWSID: AZ0407030
132 served
GW -BWC, INC- EAGLETAIL
PWSID: AZ0407032
288 served
GW- BWC, INC- GARDEN CITY
PWSID: AZ0407037
51 served
GW SANTA CRUZ WATER CO
PWSID: AZ0411131
84,000 served
GW SAGUARO DIST WATER CO - LYN LEE
PWSID: AZ0410007
114 served
GW FARMERS WATER CO - SAHUARITA
PWSID: AZ0410048
492 served
GW FARMERS WATER CO - CONTINENTAL
PWSID: AZ0410049
5,592 served
GW SAGUARO DIST WATER CO - TORTOLITA
PWSID: AZ0410154
69 served
GW OCOTILLO WATER - VALLEY VIEW ACRES
PWSID: AZ0410158
496 served
GW OCOTILLO WATER - DIAMOND BELL
PWSID: AZ0410159
706 served
GW OCOTILLO WATER - CATALINA
PWSID: AZ0410171
1,168 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
From the Blog
Photo by Bluewater Sweden on Unsplash
Mar 22, 2026 · 6 min read
How to Read Your Annual Water Quality Report (CCR)
Your water utility is legally required to send you a Consumer Confidence Report every year. Here's how to actually understand it.
Photo by Louis Hansel on Unsplash
Mar 5, 2026 · 9 min read
Lead in Tap Water: The Complete 2026 Guide
Lead enters drinking water through old pipes and fixtures. Here's how to identify your risk and what to do about it.
Photo by Eduardo Casajús Gorostiaga on Unsplash
Feb 18, 2026 · 5 min read
What Is an EPA Maximum Contaminant Level (MCL)?
MCLs are the foundation of US drinking water safety. Here's how they're set and what they mean for your tap.
Photo by Naja Bertolt Jensen on Unsplash
