Monday – Friday 7:30 AM - 3:30 PM
The City of Portsmouth’s Mosquito Control Program began this year's monitoring on April 8, 2026. 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.
Residents, businesses, and neighborhood groups volunteer their time to help maintain the City's pocket parks, squares, traffic islands, and other green spaces. Maintenance responsibilities range from weeding and mowing to litter control and planting, depending on your interests and the needs of the particular spot you adopt.
The Portsmouth Water Division routinely monitors water quality parameters and performs water quality sampling and analysis as directed by the Federal Safe Drinking Water Act. Water sources are monitored for radioactive, biological, inorganic, volatile organic, and synthetic organic contaminants. A full list of the required sampling parameters can be found here.
