360 CMR, § 12.03
Authority shall mean the Massachusetts Water Resources Authority.
Authority delivery system shall mean the waterworks under the control of the Authority.
Enabling act shall mean the enabling act of the Authority, St. 1984, c. 372, as amended.
District measurement shall mean the use of flow measurements in the pipes supplying a portion of the municipal distribution system that has been isolated by selective closing of valves.
Ground microphone shall mean a monophonic or stereophonic listening instrument designed to be placed on a paved surface or compacted soil over an underground pipe for purposes of detecting sonic vibrations associated with leakage.
Leakage potential shall mean the residual portion of unaccounted-for water that remains after all metered usage and estimates of meter slippage and public use are subtracted.
Local body or community shall mean any city, town, district of the Commonwealth or other entity, including a state or federal agency, which receives some or all of its water supply from the Authority pursuant to St. 1984, c. 372, § 8(d), (the enabling act).
Municipal distribution system shall mean all potable water piping and any other facilities that contain water and from which leakage may occur that are owned by the community.
Sonic leak survey shall mean the systematic use of sound intensifying equipment to detect the noise of leakage from underground water pipes.
Unaccounted-for water shall mean the water that has been delivered to the distribution system but has not been accounted for as metered consumption or estimated public use upon which billing was based.
360 CMR, § 12.03