South Berwick hears stormwater update as nitrogen rules, sweeping requirements approach

Summary

An environmental engineer told the Town Council the town’s municipal stormwater permit will grow stricter in 2027, likely bringing new low-impact development standards and nitrogen-reduction measures; councilors later debated buying a combined street‑sweeper/storm‑basin cleaner and voted down a funding transfer.

Christy Rubaska, an environmental engineer consulting to the Southern Maine Stormwater Working Group, told the South Berwick Town Council on June 24 that the town’s municipal stormwater program will face stricter state rules when the next general permit is issued in 2027.

Rubaska said the town has been regulated under the general permit for municipal separate storm sewer systems “since 02/2003, and we are now finishing up permit year 3 of our fourth general permit,” and that state low‑impact development standards and new nitrogen requirements are likely to be enforced after the permit renewal process.

The presentation explained why nitrogen is becoming a focus: wastewater treatment plants are being required to reduce nitrogen loads, and one cost‑effective option for treatment plants is to partner with municipalities on land‑based measures such as street sweeping and catch‑basin cleaning. Rubaska said,…

South Berwick hears stormwater update as nitrogen rules, sweeping requirements approach

Summary

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