Wildfires threaten drinking water with contamination risks

As wildfires rage, the aftermath poses a hidden threat to clean water supplies, contaminating reservoirs and water systems for months after the flames are extinguished.

Daniel Wolfe and Aaron Steckelberg report for The Washington Post.

In short:

Wildfires can introduce cancer-causing substances into water supplies, affecting millions in high-risk areas.
Burned vegetation and ash prevent water absorption, leading to flash floods and contamination.
High ambient heat can compromise PVC water lines, unfurling plastic polymers and releasing volatile organic compounds (VOCs) into the water supply.

Key quote:

"We’re destabilizing [water] systems and we don’t even know in what way and how."

— Newsha Ajami, chief strategic development officer, Lawrence Berkeley National Labs.

Why this matters:

As the flames consume everything in their path, they release a cocktail of chemicals and heavy metals from burned structures, vegetation, and soil. These toxics seep into waterways and reservoirs, turning our taps into potential health hazards. Read more: US lead pipe replacements stoke concerns about plastic and environmental injustice.

www.washingtonpost.com

Wildfires threaten drinking water with contamination risks

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