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In 2020, the Utah Department of Environmental Quality (DEQ) developed a Reconnaissance Plan for Per- and Polyfluoroalkyl Substances (PFAS) in Utah. The plan can be found here. The primary goal of this plan was to assess the potential impact of PFAS on human health by evaluating drinking water sources. To efficiently utilize limited lab capacity and funding, public drinking water well sites were selected for sampling based on potential risk of contamination from known or suspected sources. Although no PFAS are known to be manufactured in Utah, there are industrial processes that may use PFAS in manufacturing and these potential sources were mapped in proximity to public drinking water wells to compile the first list of target sites. Subsequently, additional testing resources were offered to select water providers to sample their major surface water sources, since surface water sources are, in general, more vulnerable to contamination. The methods used to detect PFAS have much lower detection limits than the method used for the UCMR3 monitoring, in addition to monitoring for 25 PFAS.
In most cases, the results were below the method detection limit (MDL) or were reported as between the MDL and the method reporting limit (MRL). The MDL is the value below which a chemical cannot be detected reliably and the MRL is the level at which a chemical concentration can be determined with high confidence. If a chemical was detected between the MDL and MRL, the result is noted by a “J” next to the value. The “J” means that the lab is confident the chemical is present but is not confident in the concentration, therefore the number reported is an estimate.
DEQ is planning to update the risk assessment from 2020, to expand sampling to additional locations, and to conduct repeat monitoring at surface water sources, given the potential for seasonal variations in water quality. This map will be updated at least once a year with additional data.
To obtain a copy of the sampling results with associated geographic information, please send an email to DDWGRAMMA@utah.gov indicating that you would like to receive the locational information associated with PFAS sampling.
If you have additional questions, please contact your water provider or the Division of Drinking Water at DDWPFAS@utah.gov. To find contact information for the water system that serves you, please visit here.