Tisbury tackles nitrogen pollution


The Tisbury water resources committee will hold a community workshop to introduce the town’s Comprehensive Wastewater Management Plan (CWMP) on Wednesday, June 30, at 6 pm at the Tisbury Emergency Services Building. 

According to a release, the CWMP is a key step toward implementing the total maximum daily loads (TMDLs) for nitrogen in Tisbury’s estuaries. TMDLs for nitrogen are determined by the Massachusetts Department of Environmental Protection. Nitrogen pollutes coastal ponds, and wastewater is “the largest source of nitrogen in the local watersheds.” Lake Tashmoo and Lagoon Pond have high levels of nitrogen, which is increased daily by septic systems. Tisbury is working with Environmental Partners, “an architectural, engineering, planning, and environmental consulting firm,” to create the CWMP. The plan will analyze current wastewater conditions, future wastewater needs, and compare methods for reducing nitrogen loads in Lake Tashmoo and Lagoon Pond. This will result in a 15- to 20-year plan draft that will be presented to the Tisbury select board and the town’s citizens for approval. 

For those who want to be on the mailing list for notices about future workshops, more information, or have questions about the CWMP, send an email to cwmp@tisburyma.gov. Those interested in the project can also go to the CWMP page on the Tisbury website: tisburyma.gov/water-resources-committee