From Sunday, May 10 through Tuesday, May 12. For public safety, certain hiking trails are restricted from 8 a.m. to 5 p.m.
Implementation Guidelines for Design Standards Manual
Design Standards Manual for Water and Wastewater Systems
In May 2026, a new Design Standards Manual for Water and Wastewater Systems was finalized.
The new manual is available from the Design Standards section of the Phoenix Water Services website.
Below is the link to the new Implementation Guidelines.
Implementation Memo (PDF)