Water Quality Month

Water quality doesn't begin at the tap. It starts at the source and is protected every step of the way through treatment, testing, maintenance, and community partnership.

Image of water quality staff sampling water

Treating and Testing Your Water

Providing safe, high quality drinking water is a continuous process that extends far beyond the treatment plant. East Valley Water District uses advanced treatment processes and conducts thousands of water quality tests each year to ensure your water meets or exceeds all state and federal drinking water standards. 

Water Treatment

Treatment

Water is carefully treated to remove naturally occurring minerals and other impurities as needed, ensuring it is clean and safe before entering the distribution system.

Protecting Water Quality

Water is treated to eliminate harmful microorganisms and help protect water quality as it travels through the distribution system to your tap.

GAC Treatment

Treatment Technology

At the District's Surface Water Treatment Plant, advanced submerged membrane filtration and granular activated carbon (GAC) technology remove particles and enhance the removal of contaminants, producing high-quality drinking water before it enters the distribution system.

Water Quality By the Numbers

  • Thousands of water quality samples collected each year (approximately 3,500–3,600 annually).
  • Testing occurs throughout the treatment and distribution system, not just at the treatment plant.
  • Third party, certified laboratories analyze water for bacteria, disinfectant levels, minerals, metals, and other regulated contaminants.
Various bottles used during water sampling.

What You Can Do at Home

Water quality is a shared responsibility. While East Valley Water District works around the clock to deliver safe, high quality drinking water, there are simple steps you can take at home to help protect your water and plumbing system.

SIMPLE STEPS

  • Replace faucet aerators to remove any mineral buildup can affect water flow. 
  • Maintain your home's plumbing by repairing leaks and replacing aging plumbing fixtures.
  • Use certified water filters and replace filters according to manufacturer recommendations. 
  • Dispose of chemicals properly. Never pour paint, solvents, oil, medications, or pesticides down drains.

Learn More

Annual Water Quality Report

View the annual report with important information about your drinking water, including testing results. 

View the Report
Projects That Protect Water Quality

Investing in modern infrastructure today helps ensure safe, reliable, and high quality drinking water.

Learn About Projects
Water Sources

Learn about the District's two sources of water: groundwater and surface water.

Learn About Sources
Water Quality FAQs

View frequently asked questions about water quality.

View FAQs