PFAS regulations most likely to squeeze small, poor utilities
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The U.S. Environmental and Protection Agency’s new PFAS water treatment rules are most likely to hit water utilities serving small service areas with poor populace and old infrastructure the hardest, analysts say.
In April the EPA
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3M Company and DuPont de Nemours recently settled lawsuits for creating and releasing the PFAS into the environment. The utilities will be able to use this money, Moody’s said.
“Utilities that opted out from participation in the class action suits still have the ability to file suits individually,” Dickinson said.
“While some limited federal funding assistance has been made available through the Bipartisan Infrastructure Law, the vast majority of the compliance costs will fall directly on water utility customers through their water rates,” Dobbins said.
With the EPA having just released its rules and the deadline to meet them less than five years away, the bulk of the bonds for the capital upgrades are likely to be sold 2025 to 2027, Dickinson said.
The EPA rule sets the limit for perfluorooctanoic acid and perfluorooctane sulfonic acid in drinking water at four parts per 1 trillion, which Moody’s said was a “very low level.” Three additional PFAS levels are set at 10 parts per 1 trillion. Finally, the rule limits mixtures using two or more PFAS according to an index that measures their combined concentrations.
The technologies alternately used to remove PFAS from water are granular activated carbon, ion exchange, reverse osmosis and nanofiltration, according to the National League of Cities. Water utilities that need to remove PFAS will choose among these.
The use of granulated carbon is proving to be popular. However, it can only be used for six to 12 months before the carbon must be either replaced or cleaned to be reused, adding to its operating costs.
After the EPA announced its rules, it declared the most widely used of the PFAS, PFOA and PFOS, to be hazardous substances under the Comprehensive Environmental Response, Compensation, and Liabilities Act, generally known as the Superfund. The designation could raise the PFAS rules’ “compliance costs,” Moody’s said. For example, the granulated carbon filters become saturated with PFAS over time requiring replacement or cleaning or the PFAS will leach into the water, said Ryan Patton, Moody’s assistant vice president.
The filters may need to be replaced several times a year, leading to significant operating expenses, Patton said. “With the hazardous materials designation, it’s less likely that these filters could be treated and re-used. They will likely require more specialized disposal methods, which will also be more expensive.”
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AWWA estimates the cost of removing the lead pipes could top $90 billion. “Most of these costs will fall to consumers through higher water bills,” said AWWA CEO David LaFrance.
Dickinson said the costs of removing lead pipes will largely be borne by utilities serving older cities. Chicago had been planning to remove its lead pipes over 30 to 40 years. The requirement to do it in 10 years will make it much tougher to achieve.
Many utilities are responsible for both drinking water and wastewater treatment and even further expenses for them may be coming in the next few years if the EPA rules they must remove PFAS from wastewater. Dickinson said this is being discussed by those in the industry and may happen soon.
Already, industry participants are curbing the sale of biosolids from wastewater treatment sites to agriculture in anticipation of PFAS regulations against it.
The Cape Fear River in North Carolina is one area known to have problems with PFAS. AMWA pointed to two utilities that treat the river’s water, Fayetteville Public Works Commission and Cape Fear Public Utility Authority, as working to remove PFAS.
The utilities are about 90 miles apart. The Cape Fear PUA completed its PFAS treatment facility in October 2022 while the Fayetteville PWC plans to commence construction this coming spring and complete it in February 2028. Both have opted for the granular activated carbon filter technology.
While both draw on Cape Fear River for water, the Cape Fear PUA gets 20% of its water from well water and the Fayetteville PWC gets some water from the Little Cross Creek Watershed.
The Cape Fear PUA
The Cape Fear PUA has spent $77.3 million in PFAS expenses including $9 million of legal fees, said Vaughn Hagerty, Cape Fear communications director. It anticipates spending $5 million annually on PFAS removal operating costs. Total revenues in fiscal 2023 were $109.1 million.
The Fayetteville PUC is projecting the PFAS removal plant will cost $111 million. It anticipates sending off its carbon media to be reused after six to 12 months use, MacRoberts said.
MacRoberts said the utility is working with some of the parties that discharge into its sewer system to develop plans to minimize their PFAS releases.
