Cost of PFAS Compliance
The EPA estimated that complying with the 2024 PFAS maximum contaminant levels will cost US water utilities approximately $1.5 billion annually — including capital investment in treatment infrastructure, ongoing operating costs for media replacement and system maintenance, and monitoring and reporting requirements. This cost burden falls most heavily on smaller water systems with limited rate bases and limited access to capital markets, creating financing challenges that larger urban utilities do not face to the same degree.
Rate Increases for Customers
Treatment cost increases ultimately translate to higher water rates for customers. The magnitude of rate increases depends on the utility’s size, the extent of PFAS contamination in its source water, and the treatment technology required. Small utilities in heavily contaminated areas could see rate increases of 20 to 50 percent or more; large urban utilities with moderate contamination may see single-digit percentage increases. Water affordability advocates have raised concerns about the disproportionate impact of PFAS treatment costs on low-income customers.
Federal and Settlement Funding
The Bipartisan Infrastructure Law allocated $10 billion for emerging contaminants including PFAS in drinking water over five years, with priority weighting toward small and disadvantaged systems. Combined with settlements from PFAS manufacturers totaling over $11 billion, these funds provide partial but meaningful offset for utility compliance costs. Water utilities in heavily contaminated areas that have successfully pursued liability claims against PFAS manufacturers have reduced their net compliance cost burden substantially.
Affordability Program Expansion
The combined pressure of PFAS treatment costs and existing infrastructure investment requirements has renewed focus on federal drinking water affordability programs. The Low Income Household Water Assistance Program (LIHWAP) and state-level affordability provisions have expanded coverage, but advocates argue that without direct customer assistance subsidies tied to PFAS treatment cost increases, low-income households will face disproportionate burden. Infrastructure funding that reduces utility capital costs provides only indirect relief to individual customers without affordability program expansion.