The leader of the House environment committee wants Minnesota farmers to pay to clean up drinking water contaminated with a pollutant that mainly comes from agricultural fertilizers spread on row crops.
Rep. Rick Hansen, DFL-South St. Paul, said the state should increase its fertilizer fee to raise money to test private wells for nitrate contamination in southeastern Minnesota and provide bottled water for those who need a new drinking source.
"There has to be a 'polluter pays' model," Hansen said. "Once the general public picks up these costs there will be no incentive for change. Why would anything change if someone else will be cleaning up the mess?"
The EPA ordered the state on Nov. 3 to take several steps to address nitrate contamination in southeast Minnesota, including to provide safe water immediately to people who may be drinking from contaminated private wells.
Nitrate is a chemical that is dangerous in high quantities, and the porous geography of southeastern Minnesota makes wells particularly vulnerable to it. About 90% of the nitrate in southeastern Minnesota's water comes from nitrogen fertilizers spread on croplands, a state study found in 2013.
Despite spending hundreds of millions of dollars over decades on studies, stakeholder meetings, incentives and educational and voluntary programs, the state has made almost no progress in reducing nitrate pollution.
The most well-known effect of drinking water with high nitrate is the rare but potentially fatal condition called blue baby syndrome, in which infants are starved of oxygen. Federal regulators imposed a limit at 10 milligrams of nitrate per liter of water several decades ago to guard against that. Newer research links drinking water with even lower levels of nitrate to colorectal cancer, thyroid disease and neural tube defects.
In a response Friday to the EPA, the commissioners of the three state agencies responsible for preventing nitrate pollution defended the state's past work. A joint letter from Agriculture Commissioner Thom Petersen, Pollution Control Agency Commissioner Katrina Kessler and Health Commissioner Brooke Cunningham said they will provide vouchers for bottled water to "vulnerable residents," and will "again notify affected residents" of the hazard, the commissioners wrote. The state will come up with a plan by Jan. 15 to test wells, according to the letter.