Rising flood risks threaten many water and sewage treatment plants across the US
Across the U.S., municipal water systems and sewage treatment plants are at increasing risk of damage from floods and sea-level rise brought on in part or even wholly by climate change
LUDLOW, Vermont — The crack of a summer thunderstorm once comforted people in Ludlow, Vermont. But that was before a storm dropped eight inches of rain on the village of 2,200 in two days last month. And it was before the devastation of Tropical Storm Irene in 2011. Now a coming rainstorm can stir panic.
“We could lose everything again,” said Brendan McNamara, Ludlow’s municipal manager.
The rainfall that walloped Vermont last month hit Ludlow so hard that floodwaters carried away cars and wiped out roads. It sent mud and debris into homes and businesses and forced officials to close a main road for days.
Thankfully, the facility that keeps the village’s drinking water safe was built at elevation and survived. But its sewage plant fared less well. Flooding tore through it, uprooting chunks of road, damaging buildings and sweeping sewage from treatment tanks into the river. Even now the plant can only handle half its normal load.
It’s not just Ludlow. Water infrastructure across the country is vulnerable as climate change makes storms more unpredictable and destructive, flooding low-lying drinking water treatment plants and overwhelming coastal sewage systems.
“Wastewater systems are not designed for this changing climate,” said Sri Vedachalam, director for water equity and climate resilience at Corvius Infrastructure Solutions LLC. “They were designed for an older climate that probably doesn’t exist anymore.”
A big reason is geography. Wastewater systems — which deal with sewage or stormwater runoff — are often near water bodies because
Read more on abcnews.go.com
