The Lexington Planning Commission Work Session on September 18, 2025, spotlighted critical updates on the city's Municipal Separate Storm Sewer System (MS4) program, presented by Water Quality representative Bailey Young. The MS4 program is essential for managing stormwater runoff in urban areas, particularly in Lexington, which is one of only two Phase 1 communities in Kentucky authorized to discharge stormwater into local waterways.

Young emphasized the importance of the MS4 program in maintaining and improving water quality, especially given the urban environment's potential for pollution from everyday activities. The program includes ten key elements, with significant updates on four areas over the past year.

One major focus is the illicit discharge detection and elimination program. Young reported that the city has been conducting dry weather screening of outfalls since 2009, with plans to enhance this initiative by prioritizing inspections based on various criteria, such as population density and the condition of sanitary sewers. This new approach aims to identify and eliminate non-stormwater discharges more effectively, with a rollout expected in 2026 pending state approval.

Another critical update involves post-construction stormwater management. Lexington currently oversees nearly 2,800 stormwater control facilities, conducting over 5,200 inspections annually. To clarify responsibilities for property owners, a maintenance manual is being developed, set for publication in January 2026.

Additionally, the city is revamping its water quality monitoring program to encompass a broader countywide focus, allowing for better trend analysis. This new program will involve community engagement through volunteer participation in sampling efforts.

Young also highlighted ongoing stakeholder discussions regarding stormwater management protocols, addressing concerns about green infrastructure and construction practices. The commission is committed to ensuring that stormwater facilities meet design standards, which is crucial for both water quality and quantity management.

As Lexington continues to refine its stormwater management strategies, these updates reflect a proactive approach to safeguarding the city's waterways and engaging the community in environmental stewardship. The anticipated changes and enhancements to the MS4 program are set to play a vital role in addressing stormwater challenges in the years to come.