Fire hydrant flushing and rusty water

Lakewood’s Water Resources Department occasionally flushes fire hydrants and water mains to help maintain water quality, remove sediment and support the long-term reliability of the city’s water system.

Hydrant flushing may also be needed after water main construction or repair work. In those cases, the temporary flow of water may be strong or may contain sediment or construction debris, making it impractical to capture and reuse.

Why hydrants are flushed

Flushing helps move water through the distribution system and can clear natural mineral sediment that may build up in water mains over time. It also allows crews to check hydrants and valves as part of regular water system maintenance.

Although hydrant flushing may look like water waste, it is a limited and necessary water quality and maintenance practice.

Temporary rusty or discolored water

Hydrant flushing can temporarily stir up mineral sediment in nearby water mains. This may cause rusty, brown or discolored water for a short time.

If you notice discolored water after hydrant flushing or nearby water main work, run cold water from an outside hose bib or bathtub faucet for a few minutes until the water clears. Avoid doing laundry until the water runs clear.

Report water concerns

To report a water quality concern, leak or water service issue, contact the Water Resources Department at 562-866-9771, ext. 2700.

After business hours, call 562-866-9771 and follow the automated instructions to page an on-call staff member.