City of Vancouver addresses PFAS contamination in drinking water system

The Clark County Board of Health convened on March 26, 2025, to address critical public health issues, particularly concerning groundwater safety and the presence of per- and polyfluoroalkyl substances (PFAS) in local water systems. The meeting focused on the implications of PFAS contamination, which poses significant health risks, and the measures being taken to protect the community's drinking water.

The session began with a presentation detailing the types of wells used in Clark County, including pitless adapter wells and traditional steel sleeve wells. These wells draw water from groundwater aquifers, which are vital for the region's drinking water supply. The presentation emphasized the sensitivity of these aquifers to contamination, highlighting the need for stringent protective measures.

A significant portion of the discussion centered on PFAS, commonly referred to as "forever chemicals," which have been detected in drinking water systems across the United States. The Environmental Protection Agency (EPA) mandated testing for PFAS in large water systems, leading to the identification of contamination in various locations, including the City of Vancouver, which serves approximately 270,000 residents. In 2023, the state of Washington established action levels for PFAS, and it was reported that several city wells exceeded these levels.

The health risks associated with PFAS exposure were outlined, including links to serious conditions such as kidney and testicular cancer, liver damage, and reduced immune response. The presentation noted that the standards for PFAS are measured in parts per trillion, illustrating the extreme sensitivity of these thresholds.

In response to the contamination, Clark County Public Health has initiated a community outreach campaign to educate residents about PFAS and provide resources for well testing and home water treatment options. The department is also collaborating with local water providers to collect more data on water quality and is working on a grant proposal to expand its efforts countywide.

During the meeting, board members raised questions regarding the extent of PFAS contamination in other wells and the authority for implementing treatment measures. It was clarified that the City of Vancouver has multiple water stations, with eight out of nine found to exceed PFAS thresholds. The board discussed potential home filtration solutions and the collaborative responsibilities of both Clark County and the City of Vancouver in addressing the contamination.

The meeting concluded with a commitment to continue monitoring the situation and providing updates to the community as new information becomes available. The proactive measures being taken by Clark County Public Health position the agency as a leader in groundwater protection efforts within Washington State.