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Latest News

Photo of Storm drain and water running through it

Stormwater Awareness Week 2023

Stormwater Awareness Week, held the fourth week of January, is an annual regional effort to teach simple everyday actions to reduce stormwater pollution. Stormwater in Phoenix is NOT treated like the wastewater system and collects pollutants as it flows through gutters, parking lots, driveways, and other paved surfaces. The polluted stormwater flows into storm drains, rivers, washes, and retention basins. 
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About Us​

The Environmental Services Division (ESD) is dedicated to protecting public health and the environment by maintaining compliance with environmental regulations for drinking water, stormwater, and wastewater quality.

Through the effective management of the Water Monitoring, Industrial Pretreatment, Commercial Inspection, Stormwater Management, and Wastewater Monitoring programs, we provide a safe and reliable domestic water supply to all residents and maintain a clean, healthy environment.

ESD also ensures compliance with environmental regulations and permits with a water, wastewater and stormwater compliance section.

ESD operates a NELAC Certified Environmental Laboratory.

​Environmental Services Division Newsletter - Fall/Winter 2022

​Environmental Services Division Newsletter - Spring/Summer 2022

​Environmental Services Division Newsletter - Fall/Winter 2021

​Subscribe to the Environmental Services Newsletter​​​​​

Sampling Water Quality​

Liquid chromatography–tandem mass spectrometry (LCMS/MS)
and gas chromatography–mass spectrometry (GCMS) identify
and measure compounds to sample water quality.​​​

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