Watch Water Systems in New Hampshire

21 community drinking-water systems in New Hampshire currently rated Watch (MISI 21–40).

Systems in the Watch band (MISI 21–40) exhibit emerging stress indicators that warrant monitoring. One or more risk families may show moderate pressure — often early signs of capital deferral, revenue concentration, or demographic shifts affecting the customer base.

SystemPop. ServedMISIBand
MANCHESTER WATER WORKS124K29.025Watch
AQUARION WATER/NH34K28.289Watch
DOVER WATER DEPT29K35.710Watch
SALEM WATER DEPT21K28.287Watch
DERRY WATER DEPT17K23.521Watch
HUDSON WATER DEPT17K23.364Watch
SEABROOK WATER DEPT14K26.289Watch
EXETER WATER DEPT12K37.655Watch
LEBANON WATER DEPT10K24.231Watch
BERLIN WATER WORKS10K20.750Watch
PEU/LONDONDERRY5K22.358Watch
RYE WATER DIST4K27.903Watch
JAFFREY WATER WORKS4K21.234Watch
BRISTOL WATER WORKS4K27.031Watch