Frozen water is 9% lighter than regular water. That is the reason ice floats.
Boston Water and Sewer Commission (BWSC) Hydrant Meter Permits are available for construction purposes. A deposit of $750.00 is required for the permit. The rental charge for a 90 day period is $50.00. Water usage is additional. If the water returns to the sewer system, there is also a sewer charge. All applicable fess will be deducted from the $750 deposit. Additional charges may apply.
BWSC’s meter must be returned to BWSC at the end of the 90-day period for reading and billing purposes. If the customer requires extended use of the hydrant meter, a new permit can be issued for an additional 90 days with another deposit of $750.00. To obtain a Hydrant Meter Permit, or for more information, please contact BWSC’s Metering Department at 617-989-7138.