On Wednesday, September 30, 2026, the Massachusetts Water Resources Authority (MWRA), in coordination with the City of Waltham, will be conducting water distribution infrastructure testing within the city in preparation of a waterline shutdown to support the WASM 3 CP2 Rehabilitation Project.
Important to note, water service to residential homes, businesses, and other properties will not be disrupted. However, discolored water and lower water pressure may occur throughout Waltham and the western part of Watertown. Should discolored water occur, please run faucets until water returns to normal clarity (it may take up to approximately 10 minutes) before drinking or using for dishes, laundry, or other household needs. Any pressure issues should be resolved following the infrastructure testing.
For more information, please contact Troy Wall, MWRA Community Relations Liaison, at Troy.Wall@mwra.com or (617) 305-5762.
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