Proposed - Massachusetts Water Resources Authority

S. 142 Wastewater Metering System Equipment Replacement
Project Purpose and Benefits
Extends current asset life
Improves system operability and reliability.
To improve the accuracy of meter data used to determine wholesale wastewater charges. This will be accomplished
by replacing the existing wastewater metering system, including hardware and software utilizing the latest available
technology. This technology will reduce confined space entries, making the metering system safer and less costly to
maintain. This project will be coordinated with and support SCADA implementation for the wastewater system.
Meter replacement was completed in FY06.
Project History and Background
Installation of MWRA’s initial wastewater metering system began in 1989 and was completed in 1994. Individual
meters in 43 customer communities receive routine maintenance on a continuous basis. This initial system was
replaced in 2003-2004. Lessons learned with the initial metering system was that the life expectancy of wastewater
meters is approximately 7-10 years and that timely replacement of meters can be scheduled to avoid whole scale
replacement. Our current system is approaching its 7 th year. Plans will be developed to evaluate new wastewater
metering technology for our 3 rd generation of meters. Meter replacement will be phased in rather than entire system
replacement. Certain key meters will be supplied electric power instead of battery resulting in more civil, electrical
and construction costs.
Scope
Sub-phase
Planning
Equipment
Purchase/Installation
Permanent Site
Improvements
Design and Constr
Wastewater Metering
Asset
Protection/Equipment
Purchase
Scope
Development of a long-term plan to upgrade or replace the existing wastewater metering
system (technology, hardware, software, telemetry).
Purchase and installation of equipment.
Supply of power and enhanced wireless communications to approximately half of the
218 permanent wastewater metering sites. The data from these key sites will be used to
optimize MWRA operation and maintenance activities during normal and wet weather
conditions.
Rehabilitation, replacement and upgrades (planning, design and construction) for the
Wastewater Metering System to be required every 10 years over the 40 year planning
period.
Expenditure Forecast (in $000s) and Project Status
Total
Budget
Payments
thru FY11
Remaining
Balance
FY12 FY13 FY09-13 FY14-18 Beyond
FY18
$26,578 $5,138 $21,441 $141 $60 $250 $8,547 $12,691
Project
Status
11/11
19.3%
Status as % is approximation on project budget and expenditures. The purchase
and installation of 2 nd generation of meters is complete. Planning for the next
replacement will soon be underway.
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