DPW Press Releases


Market Street Closed to Traffic May 8 to May 12, Open to Pedestrians

May 12, 2023

UPDATE: Market Street between Bow and Market Square is now REOPENED to vehicles, day and night. Businesses are OPEN and pedestrian traffic continues. Parking limits still in effect.

Starting Monday May 8, 2023, the DPW sewer line work on Market Street in conjunction with the ongoing utility code compliance project between Bow and Daniel Streets requires closing the street completely overnight for several days that week.


City of Portsmouth Mosquito Control Program Monitoring Starts April 10, 2023

April 5, 2023

The City of Portsmouth's Mosquito Control Program begins monitoring on April 10, 2023. Crews from Dragon Mosquito Control, Inc., the City’s contracted service, will be checking swamps, salt marshes, woodland pools, ditches, catch basins and other shallow, stagnant water for mosquito larvae.

When mosquito larvae are found, treatment may occur using one or more of the following:


Portsmouth DPW Hosts Household Hazardous Waste Collection Day on April 29, 2023

March 27, 2023

The Portsmouth Department of Public Works will hold its biannual meeting on Household Hazardous Waste Collection Day on Saturday, April 29, 2023, at the Public Works facility at 680 Peverly Hill Road. Residents of Portsmouth, Greenland and Newington are encouraged to bring household chemicals for safe disposal between 8 am and 12 noon. Proof of residency is required.

Household hazardous waste collections help residents safely dispose of items that can harm their health, the environment and drinking water supplies.


DPW Announces Winter Trash Pickup Policy & Smart 911 Automated Snow Parking Ban Alert Notification System

March 14, 2023

The City of Portsmouth Department of Public Works has adjusted its trash collection cancellation notification plans so that when there is a forecast indicating a plowable (2+ inches) snow event a notice of the cancellation of next day’s trash collection will be issued the evening before trash pickup and will coincide with an Advance Parking Ban Announcement. This notice will also request that no trash or recycling receptacles be left on the curb that might interfere with snow operations.