Agenda - 02-21-2023; 4-b - OWASA Annual Update Presentation

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OWASA Quarterly Report 3 January 26, 2023 Page 2 Reservoir), feeder creeks flowing into Cane Creek Reservoir, and the biosolids produced at the Mason Farm Wastewater Treatment Plant. We have engaged a consultant to assist our work in this area. We are also evaluating our treatment process and modifications that can be made in the short and long term to reduce PFAS levels in our finished drinking water. We continue to post regular PFAS monitoring results to our website and are evaluating how to incorporate these new test sites as well as the coming regulations into that results dashboard. The OWASA Board of Directors received an update on PFAS at a meeting on November 10, 2022. You can see the agenda for that meeting here and the meeting video here. Lead and Couper Rule: OWASA's Team and consultant are continuing work toward meeting regulations of the revised Lead and Copper Rule. The compliance date for the new rule is October 2024. OWASA has always been in full compliance with the EPA's Lead and Copper Rule. Results from our most- recent lead and copper regulatory sampling are available in our Annual Water Quality Report Card covering the 2021 calendar year. The report card is available in English and Spanish on our website. OWASA has completed an initial lead service line inventory, but we are working to add onto the information that we currently have available from historical records and internal data. We will be publicizing information about this inventory with our community as these efforts progress. We continue offering free lead and copper testing to customers and are trying to leverage these requests to receive verifiable information from customers on the material that makes up their service line (which connects their home plumbing to the OWASA meter). OWASA will continue working with regional utility partners to collaborate on efficient and effective methods so that we all can work in the best interest of our customers. OWASA will be in contact with customers as further updates are available. Members of the OWASA Team also continue working with officials at UNC—Chapel Hill as the university is investigating the cause of some lead detections at different fountains and fixtures on campus. OWASA is assisting with technical information and guidance to UNC, as well as publishing information on our website for the community in general as we have no indication there is a threat of lead being present in drinking water across the community. Annual Water Treatment Change: In support of our commitment to provide high-quality drinking water, OWASA will temporarily alter its drinking water treatment process beginning at 12 a.m. Wednesday, March 1, 2023, and continuing through the month of March. Water will remain safe to drink during this time, but customers might notice a change in taste or odor of drinking water.