Maine House passes bill banning sewage sludge that can have 'forever chemicals' and is commonly used as fertilizer

Known PFAS contamination sites in 2021. Blue dots denote samples from drinking water, purple from military sites, and orange from other sites. (Environmental Working Group map; click image to enlarge or click here for interactive version.)

Maine's House of Representatives has sent its Senate a bill banning the spread, use or sale of sludge from sewage treatment plants and septic tanks, since the sludge (called septage) is often contaminated with "forever chemicals" linked to numerous health problems. The bill would also ban the sale of crops grown where septage was spread, and the material would go to landfills instead. "It would be one of the most aggressive actions to date in Maine, which has been ramping up its efforts to respond to the presence of per- and polyfluoroalkyl substances, or PFAS, in farmland, water and food after several farms have discovered unsafe levels of the chemicals," Caitlin Andrews reports for the Bangor Daily News.

Map shows sites where septage was spread in southern Maine. (Click to enlarge)

That includes Songbird Farm, 90 miles northeast of Portland. Adam Nordell and Johanna Davis bought the 44-acre farm in 2014 and established a thriving organic farm. But in 2021 state wildlife officials found dangerously high levels of PFAS in deer that hunters had harvested in nearby Fairfield. The state warned people not to eat the deer in that area, Keith O'Brien reports for The Washington Post: "Several farms there had been fertilized in the 1990s with municipal or industrial sludge — essentially, treated sewage — that contained an unknown amount of PFAS. The deer had ingested it over time and should now be avoided, the state announced."

Nordell and Davis suspended sales from their farm after voluntary testing revealed that their soil, water and spinach crops were all contaminated with PFAS. The farm's last owner had died of pancreatic cancer, so they got themselves tested for PFAS too, and discovered their levels were 250 times higher than the average American, O'Brien reports.

"It would be comforting to dismiss the story of Songbird Farm as a one-off calamity — a confined case of PFAS contamination. The reality is far more disturbing. According to the nonprofit Environmental Working Group, more than 2,800 sites nationwide are contaminated by PFAS — and that’s only what’s documented," O'Brien reports. "The real total is unknown, and possibly much higher. In Maine alone, the state Department of Environmental Protection is investigating 700 sites once fertilized with the same sort of sludge that likely contaminated Songbird Farm. Many cases are lurking beneath the surface, undetected and often unregulated by an official watchdog."

PFAS, invented in 1938, are nearly impossible to avoid: They're in everything from food packaging and non-stick cookware to baby bibs, and they have a habit of rubbing off on whatever they touch. Once they're in your body, they're around for the long haul. "It can take four to 15 years for levels of PFAS to reduce by half in the human body, and it can take centuries for the substances to disappear from the environment," Isabella Grullón Paz reports for The New York Times, citing a Consumer Reports investigation revealing how prevalent PFAS are (in fast-food packaging, for example).

Maine is taking some of the most aggressive regulatory actions of any state towards PFAS to date. The state government "advanced a first-in-the-nation phaseout of most consumer products containing PFAS last year. They are on track to approve a $100 million fund to aid farmers and address health effects and have also advanced a phaseout of pesticides containing the chemicals," Andrews reports.