We offer analysis of PFAS in well water, surface water, and wastewater for 40 PFAS compounds using EPA method 1633 which includes all PFAS in EPA drinking water methods 533 and 537.1. The list of analytes for EPA 1633 and our Method Reporting Limits (MRL) can be found here.
Clients and Communities Served
This method is useful for companies and other entities that must measure PFAS-related compliance or monitoring obligations in National Pollutant Discharge Elimination System (NPDES) permits. This method is also useful for organizations investigating or remediating PFOA, PFOS, or PFBS in groundwater, soil, surface water, biosolids, sediment, landfill leachate, or fish tissue.
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Projects
Wastewater: We completed an EPA funded project studying PFAS in the wastewater infrastructure in Delaware by analyzing, influent, effluent, and sludge from wastewater treatment plants. Grant Number: EM84053101
Analysis of PFAS compounds in three wastewater treatment plants conducted using EPA method 1633 showed that landfill leachate is the most significant contributor to the PFAS load. If legislation for the control of PFAS WWTPs is considered, they must restrict landfill leachate from entering WWTPs. A new inhouse method for diPAPS, which are known to be used in toilet paper, was developed and integrated into method 1633 and showed diPAPS were present in two of the wastewater plants. Our data, together with published research, indicate that diPAPs should be included in the list of analytes that is covered by EPA Method 1633. An improved method for TOP assays was developed.
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Surface water: In collaboration with University of Delaware students, we sampled and analyzed PFAS in two Delaware Creeks (Red Clay and White Clay) and two Rivers (Brandywine and Christina). Our data visualized below provided comparison of the amounts and patterns of PFAS compounds in the surface waters for policy and pollution prevention. This study revealed a distinctive pattern of PFAS in high amounts indicative of releases from a source along Red Clay Creek.
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Well water: We have been monitoring the well water impacted by PFAS containing fire-fighting foam for the past 5 years to support a municipal water system which has a Granular Activated Carbon treatment system. By monitoring and visualizing the data from raw untreated water analysis, we are helping our clients observe seasonal variations as part of the water treatment protocols and for other actionable insights.
