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Water System Master Plan (Revision dated April 2006)
1. Average daily demands and associated peak factors in the system have remained constant over the past seven years. 2. Water consumption has remained constant across customer classifications. 3. Large water users account for approximately 1.3% of meters and approximately 35% of the total water consumed. 4. Population increases have varied dramatically from decade to decade. However, household growth has been an almost continuous 1.3% per year. There has been a decrease in the number of persons per household. 5. Population growth since the last Master Plan was far lower than projected. 6. Future demand based on population growth is easier to account for than changes in industrial/commercial demand. 7. System source capacity is more than adequate for future demand conditions. However, water diversion allocations are limited and will not be increased.
8. Adequacy
of supply provides safety and redundancy. Higher demands must be met with
water purchased from outside sources.
Water Quality and Treatment 1. All of the Authority’s sources of supply are in compliance with all current and projected primary water quality regulations. The secondary water quality standard for hardness is exceeded in several wells and sodium levels exceed the recommended maximum at Morris Plains Well and Littleton Well. 2. Certain groundwater sources are susceptible to VOC and MTBE contamination. Two sources are now treated for VOC removal and two additional sources contain low level VOC and MTBE contamination. 3. The capital program should anticipate providing VOC and possibly MTBE removal at Wing Well. 4. New and pending regulations do not portend significant additional capital investment for compliance. 5. The Capital Program should anticipate replacement of membranes at the Clyde Potts Treatment Plant every seven (7) to ten (10) years and replacement of Greensand filter media at Black Brook Wells and McCabe Well every ten (10) years. 6. All well water sources will require continuous chlorine residual monitoring.
7. Laboratory
certifications for compliance monitoring to be obtained for heterotrophic
plate count and orthophosphate. Certifications for control monitoring to be
obtained for alkalinity, hardness, turbidity and color.
Pumping, Transmission and Distribution
1. Excessive unaccounted-for water in the system was brought under control in the mid ‘90s. Since then the percent unaccounted-for had steadily increased and has recently begun to decrease to below 22%. 2. Additional efforts are warranted to effect a reduction in unaccounted-for water. Specifically, this includes expanded leak detection efforts using additional correlation equipment. 3. Outside contractors should be employed to assist this effort if further reductions in unaccounted for water are not realized in 2006. 4. The plan outlined in Chapter 4 for long term replacement of distribution system infrastructure should be prioritized in the near term for leakage reduction. 5. Additional testing of water meters throughout the water system should be undertaken immediately in conjunction with the AMR program to determine the accuracy of the consumption data.
1. The Automatic Meter Reading System currently in use by the Authority is almost 17 years old and operating satisfactorily. 2. The cost to maintain the AMR System and keep the high number of customers on the system is rapidly increasing. 3. System components are nearing obsolescence and future availability is uncertain. 4. The majority of water meters are also aver 17 years old and show some inaccuracy but no sign of excessive wear or increasing failure. However, additional testing of meters is warranted. 5. As long as the current AMR system is operational, a compatible radio system would be installed in phases or as existing MIUs fail. A full water meter change out at this time is not warranted.
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