EPA Issues Interim Strategy for Addressing PFAS in Wastewater Permits

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As we previously reported, EPA published a PFAS Action Plan in 2019 designed to enhance and improve data gathering, regulatory development, enforcement, and communication related to per- and polyfluoroalkyl substances (PFAS). EPA continues to make progress implementing the PFAS Action Plan and is working on a more formal framework for addressing PFAS under the Clean Water Act. In the meantime, EPA’s Office of Water recently issued an interim strategy for addressing PFAS in National Pollutant Discharge Elimination System (NPDES) permits.

The interim strategy makes a number of recommendations for the consideration of PFAS in the NPDES permit program. Some of these recommendations involve gathering and sharing information, but others may directly impact permit requirements.

According to the interim strategy, permit writers should consider incorporating requirements for monitoring PFAS at facilities where PFAS are expected to be present in wastewater discharges. Specifically, PFAS may be incorporated into an NPDES permit in the absence of monitoring data if, “because of the raw materials stored or used at the facility, products or byproducts of the facility operation, or available data and information from similar facilities, the permit writer has a strong basis for expecting that the pollutant could be present in the discharge.” Under the interim strategy, NPDES permits may also incorporate best management practices to control or abate a PFAS discharge.

The interim strategy also suggests consideration of PFAS in stormwater permits. In situations where PFAS are expected to be present in stormwater, permit writers may consider monitoring requirements as well as stormwater pollution controls specific to PFAS.

The interim strategy recommends the ongoing information sharing on the development of PFAS requirements in NPDES permits. It also calls for the development of a compendium to compile practices, trends, and developments to address PFAS in NPDES permits around the country.

As of now, EPA has not provided much detail as to what may give it a “strong basis” to expect PFAS to be present in a discharge such that PFAS can be incorporated into an NPDES permit. Based on the language quoted above, however, it appears EPA may use not only information about the actual facility subject to the NPDES permit, but also information from similar facilities to make that determination. We will continue to follow these developments as the interim strategy is rolled out.

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DISCLAIMER: Because of the generality of this update, the information provided herein may not be applicable in all situations and should not be acted upon without specific legal advice based on particular situations.

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