UPDATE — Oct. 8, 2026, 2 p.m.: Global Water–Santa Cruz Water Company cancelled Maricopa’s precautionary boil-water advisory after repeat water samples tested negative. The utility’s all-clear says E. coli was not detected in the repeat samples.
Customers covered by the notice no longer need to boil tap water for drinking, cooking, making ice, brushing teeth or washing dishes. Global Water says Arizona Department of Environmental Quality regulations do not require the utility or its customers to take further action.
What the repeat tests found
The utility issued the precautionary advisory after two preliminary tests on Oct. 7 indicated that tap water could be contaminated with E. coli. The initial notice did not establish that contamination had been confirmed throughout the system.
Global Water collected repeat samples Oct. 7 and sent them to a third-party laboratory. According to the all-clear posted the next day, those results were negative and E. coli was not detected.
The latest notice replaces the earlier precautionary instructions. Residents who encounter an older social post, screenshot or email telling them to boil water should check its timestamp and use the current Global Water public-notice page.
What customers need to do now
Global Water’s Oct. 8 notice says customers may return to normal tap-water use. That includes:
Drinking and preparing beverages.
Cooking and preparing food.
Making ice.
Brushing teeth.
Washing dishes.
The utility says customers do not need to take special precautions with filters or other home or business water systems beyond the manufacturer’s normal instructions.
The all-clear does not direct customers to flush plumbing, replace filters or discard additional supplies. Residents should avoid adding steps that are not in the current utility notice unless Global Water gives them individual instructions.
How to verify future notices
Global Water says customers with contact information on file may be notified by email, text or phone call. The utility asks customers to add customerservice@gwresources.com to their address book or safe-sender list.
For questions, Global Water lists customer service at 866-940-1102, Monday through Friday from 8 a.m. to 5 p.m., and customerservice@gwresources.com.
The City of Maricopa’s utilities page identifies Global Water as a local water provider, but the utility’s dated public-notice page is the controlling source for this event.
Why this update matters
Water advisories are time-sensitive, while old screenshots and reposts can remain visible after official guidance changes. The current utility notice controls: the precautionary advisory was cancelled at 2 p.m. Oct. 8 after negative repeat samples.
If Global Water issues a new notice for a specific service area, follow that newer direction and the exact boundaries it identifies.
Sources
Global Water–Santa Cruz Water Company — “All Clear: Precautionary Boil Water Advisory Cancelled.” Official public-notice page. Dated Oct. 8, 2026, 2 p.m. MST; accessed Oct. 13, 2026.
City of Maricopa — “Utilities & Services in Maricopa.” City utilities page. Accessed Oct. 13, 2026.