Current through Register Vol. 46, No. 39, September 25, 2024
(a)
(1) Owners of water supply systems serving
the public (purveyors) in the Delaware River Basin that distribute water
supplies in excess of an average of 100,000 gallons per day (gpd) during any
30-day period shall develop and undertake a systematic program to monitor and
control leakage within their water supply system. Such a program shall at a
minimum include: periodic surveys to monitor leakage, enumerate non-revenue
water (or in instances where AWWA methodology as set forth in section
890.8 of this Part has not yet
been adopted, enumerate unaccounted-for water), and determine the current
status of system infrastructure; recommendations to monitor and control
leakage; and a schedule for the implementation of such recommendations. Each
purveyor's program shall be subject to review and approval by the designated
agency in the state where the system is located.
(2)
Non-revenue water is
defined by AWWA as the sum of unbilled authorized consumption, apparent losses
and real losses. Non-revenue water percent is defined as
non-revenue water divided by the amount of water entering the distribution
system times 100 percent.
(3)
Unaccounted-for water is defined as the amount of water
entering the distribution system minus the amount of water delivered through
service meters. Unaccounted-for water percent is defined as
unaccounted-for water divided by the amount of water entering the distribution
system times 100 percent.
(4) The
designated State agencies are: Delaware Department of Natural Resources and
Environmental Control; New Jersey Department of Environmental Protection; New
York Department of Health; and Pennsylvania Department of Environmental
Protection.
(b) Each
purveyor shall strive to minimize system leakage to levels as guided by
IWA/AWWA Water Audit Methodology (AWWA Water Loss Control Committee [WLCC]
Water Audit Software) and corresponding AWWA guidance.
After a purveyor has submitted to the appropriate
designated agency its initial program to monitor and control leakage, the
purveyor shall prepare and submit a revised and updated program every three
years thereafter or at such greater frequency as may be required by the
designated State agency. The designated State agency may require more frequent
program submission from purveyors with unaccounted-for or non-revenue water
that is in excess of 15 percent.
(c) Any project approvals hereafter granted
pursuant to section
3.8 of the DRBC compact or any
renewal of a project approval shall be subject to the provisions of this
regulation.
