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Taking Action on Stormwater

Stormwater made the Presumpscot River discolored in May 2023. Documented by Water Reporter Stephanie Noyes.

Stormwater delivers some of the largest loads of pollution into Casco Bay. As stormwater flows over our roads, driveways, parking lots, and buildings, it collects a toxic slurry. Instead of filtering into the soil, water sheets off these impervious surfaces, picking up pesticides and fertilizers from lawns, exhaust and salt from roadways, pathogens from pet waste, and so much more. Stormwater carries this toxic mix into our rivers, streams, and ultimately into Casco Bay, causing a host of water quality problems. While stormwater pollution is very difficult to eliminate because it is so diffuse, one of the ways we are working to reduce this pollution is through improving how the state protects our waters from this threat.

Here is some good news as we work to reduce stormwater pollution: the Maine Department of Environmental Protection asked Casco Baykeeper Ivy Frignoca, our lead advocate, to serve on the Steering Committee revising Maine’s stormwater rules. These rules apply to large developments in all municipalities in Maine.

The Steering Committee contains twenty members tasked with identifying how the stormwater rules should be strengthened. Ivy’s work will be informed by her years of experience working to reduce stormwater pollution. The Steering Committee met for the first time in December 2023.

The stormwater rules as currently written are out-of-date. They apply only to large developments and miss a lot of the actual development and redevelopment in our watershed. The rules also do not require the use of low-impact development (LID) strategies, such as leaving buffers near streams. While they have some incentives for the use of LID techniques, those incentives rarely tempt developers. Also, as our climate changes, the rules must be revised to account for future increasing storm intensities and precipitation.

The next meeting of the Steering Committee will be in January 2024. To keep you up-to-date about this important process, Friends of Casco Bay will host an event in early 2024 about stormwater pollution, the revision process, how YOU can get involved, and, of course, why it matters for Casco Bay! More information will be sent via email. Sign up for our email list here.