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Annual Water Conservation Summary Report for 2009 City of Kennewick Water System ID. - 38100Q Introduction: The following annual water conservation report will update the data collection element as outlined in our City of Kennewick - Water System Plan, Section 3, April, 2002 for calendar year 2009. This report consists of a progress summary of water conservation actions and measures taken by the City in 2009, compares data for the past 3 calendar years, and identifies those Water Conservation efforts planned in future years. Water Conservation Data Collection Elements: Requirements Type of Data Units of Measure Frequency of Collection Source of Supply Meter Readings Cubic Feet Collect: Read daily but report only and annual totals Peak Day/Peak Month Cubic Feet Pumped from the Supply Sources Collect: Each year’s peak day and peak month totals Emergency Interties - Amount Imported Cubic Feet Collect: total Wholesale - Amount Purchased Cubic Feet Collect: total Service Meter Readings Single-Family – Domestic and Irrigation component (Begun in 2006) Total Cubic Feet Used by this Customer Class Collect: totals Multi-Family – Domestic and irrigation component (Begun in 2006) Total Cubic Feet Used by this Customer Class Collect: totals Commercial/Industrial – irrigation component (Begun in 2006) Total Cubic Feet Used by this Customer Class Collect: totals Government/Municipal Agriculture Total Cubic Feet Used by this Customer Class Total Cubic Feet Used by this Customer Class Collect: totals Collect: totals Emergency Interties - Amount Exported Cubic Feet Collect: total Wholesale - Amount Sold Cubic Feet Collect: total Non- Revenue -Accounted for Water Cubic Feet Collect: Annual total Total Accounted for Water Cubic Feet Collect: Annual total Unaccounted for Water Cubic Feet Collect: Annual total Population Served Estimate the number of customers & connections served in the residential classes and the number of connections served in the commercial, government, industrial and agriculture classes. Collect: Annual totals Economic Data Existing Water Rates for each class Existing water rates Conservation Data Report the type of measure, the level of implementation of duration of the measure and the date at which they were begun. Collect: Once per year March 31, 2010 1 ---PAGE BREAK--- 2 2007 - 2009 Water Conservation Data Collection Elements Type of Data 2007 2008 2009 Source of Supply Meter Readings in Mcf Collector #4 58.87 Mcf 35.91 Mcf 20.28 Mcf Collector #5 257.36 Mcf 207.13 Mcf 197.26 Mcf Water Treatment Plant 188.55 Mcf 255.29 Mcf 309.40 Mcf Total Water System Pumpage 504.78 Mcf 498.33 Mcf 526.94 Mcf Readings for 2009 on following graphs) Peak Day/Peak Month in Mcf July 15, 2007 July 2007 July 28, 2008 July 2008 July 31, 2009 July 2009 Collector #4 0.181 Mcf 5.59 Mcf 0.177 Mcf 3.88 Mcf 0.183 Mcf 4.76 Mcf Collector #5 1.248 Mcf 29.16 Mcf 1.029 Mcf 30.70 Mcf 1.335 Mcf 34.70 Mcf Water Treatment Plant 1.140 Mcf 34.58 Mcf 1.240 Mcf 33.02 Mcf 1.670 Mcf 31.60 Mcf Total Water System Pumpage 2.569 Mcf 69.33 Mcf 2.446 Mcf 67.60 Mcf 3.188 Mcf 71.06 Mcf Emergency Interties - Amount Imported None None None Emergency Interties - Amount Exported –Elliott Lake 0.219 Mcf None None Wholesale - Amount Purchased None None None Service Meter Readings Total Consumption 482.494 Mcf 469.470 Mcf 491.145 Mcf Single-Family 221.189 Mcf 213.651 Mcf 231.128 Mcf * Irrigation – Began tracking in 2006 0.560 Mcf 0.575 Mcf 0.566 Mcf Multi-Family 75.928 Mcf 66.884 Mcf 82.570 Mcf * Irrigation – Not tracked in 2007 0.000 Mcf 0.000 Mcf 0.000 Mcf Commercial/ Industrial 82.743 Mcf 78.429 Mcf 77.655 Mcf * Irrigation – Excludes outside commercial 47.691 Mcf 57.541 Mcf 51.548 Mcf Municipal/Government – Non-Revenue 54.383 Mcf 52.390 Mcf 47.678 Mcf Unmetered Water Unmetered Water Reports - Accounted for Water 2.12 Mcf 2.84 Mcf 3.70 Mcf Total Accounted for Water – (Service Meter Readings + Annual Unmetered Water Report) 474.834 Mcf 472.310 Mcf 494.845 Mcf Unaccounted for Water (See Calculations*) 29.9 Mcf or 5.9% Water Loss 26.0 Mcf 5.2 % Water Loss 32.1 Mcf 6.1 % Water Loss Estimated Population Served 67,871 68,128 69,454 Kennewick Population Only* (April Update) 65,315* -Annex. 2795 -8/07 65,860 67,180 Single Family Residential Connections 17,333 17,592 17,873 Multi-Family Residential Connections 1,179 1,177 1,170 Commercial/Industrial Connections 1,877 1,943 1,968 Municipal/Government Connections 149 148 152 Agricultural (Not determined separately from above classes) Not Available Not Available Not Available Total Active Water System Connections 20,538 20,860 21,163 Economic Data Listed in Following Narrative Listed in Following Narrative Listed in Following Narrative Conservation Data Listed in Following Narrative Listed in Following Narrative Listed in Following Narrative ---PAGE BREAK--- 3 Calculations: Source of Supply Meter Readings Pumpage in MG per day ÷ 7.48 gal./cu. ft. = pumpage in Mcf per day. Unaccounted for Water Unaccounted for water (Mcf) = Total Pumpage (Mcf) - Total Accounted for Water (Mcf) % Water Loss = Unaccounted for Water (Mcf) / Total Pumpage in Mcf x 100% Service Meter Readings a) Total Consumption is the total of all metered water usage within the City of Kennewick utility service area. b) All metered accounts are read on a basis. c) Customer classifications used for this report section include, Single and Multi- Family, Commercial/Industrial, and Government/Municipal. Of these single family, Multi-Family, and Commercial/Industrial now have an irrigation component as well as domestic use component. The Non-Revenue classification reflects the total metered water usage by Government/Municipal –non-revenue accounts. Unmetered Water a) The Unmetered Water element includes water use that is estimated and reported on a City water use form. This category includes water used by City crews, Contractors, Fire Departments, and other uses allowed under the City’s Authorized Unmetered Water policy. Estimated Population Served a) City of Kennewick Population is based on the annual City of Kennewick Planning Department updates. b) Est. Population Served = {City of Kennewick OFM Population-as of 4/1/2009 + # of outside Active Residential Accts. x 3.0 People/Account}. i.e. - In 2009 this was 67,180 + (758 X 3.0) = 69,454 People. Economic Data: The following rate table was in effect during calendar year 2009. It should be noted the City of Kennewick bills every two months. In 2008, annual inflationary billing was adopted at 100% of the CPI, however there was no CPI rate adjustment in 2009. Kennewick serves more than just municipal needs and also has county residential and commercial/industrial connections as well. Each has a different rate structure or schedule as listed in Table 1. under the headings of Inside or Outside City. ---PAGE BREAK--- 4 Table 1. Summary of Water Rates 1/1/2009 to 1/1/2010 Customer Class Inside City Outside City Residential Base Fee Includes 1” meter Consumption per 100 Cu. Ft. $1.803/CCF $2.705/CCF Multi-Family/Commercial/Industrial Base Fee 3/4” meter 1” 1-1/2” 2” 3” 4” 6” Consumption per 100 Cu. Ft. $1.057/CCF $2.326/CCF Note: 1) CCF = Hundred cubic feet or 748 gallons. 2) Maximum Billing for Multi - family accounts is based on residential rate mutiplied by the number of units. Conservation Data: The following water conservation actions or program measures were taken during 2009. The Leak Detection Program (identifying and repairing leaking waterlines) has had the greatest overall net effect on water conservation over time. Other initial program efforts begun in 1994 concentrated on water auditing and repair/testing of large industrial meters. In 1999, an annual reservoir leak testing program was added. In 2007 an irrigation component was added to further break out customer classes and manage that usage component. In 2007 a water efficiency goal also was established of 170 gpcd in a public process. • Leak Detection This program has returned the largest overall benefit to the City. In 2009 City personnel surveyed the 2009 Overlay project list using SR-22 and LC-2100 leak survey equipment. Additionally, we investigated and surveyed in map quarter sections foe a total of 15.78 miles. One main line leak and one leaking fire hydrant that did not seat properly were found. Total leak loss amounted to 160,923 gallons per year or 0.0215 Mcf. Overall program benchmarks were initially 0.17 Mcf/mile and have dropped overall to ~0.106 Mcf/mile of water main surveyed. Benchmark values have declined as newer and lower prioritized areas are surveyed. Also in 2009 we were not able to survey as much as we would have liked due to budget and personnel. To date the program has surveyed roughly 365 miles of water distribution main. Repairs to identified leaks have resulted in an overall cumulative conserved water estimate of 38.92 Mcf for the program, since it was initiated in 1994. This program has accounted for about 75% of our overall water conservation savings. ---PAGE BREAK--- 5 • Routine Reservoir Leak Testing Program As part of our annual leak testing program of the City’s twelve (12) reservoirs or tanks, eleven (11) were leak tested in 2009 including the Water Treatment Plant Clearwell. Five reservoirs were found to have some measurable leakage. 18th & Kellogg 10 MG reservoir had the highest leakage rate at (0.37%) but met AWWA specs of <0.75% in 72 hours. This was followed by 19th and Olympia Reservoir the eastside at 0.06%. All rates were however well within current AWWA standards. Since July of 2000, total conserved water estimated for the program is 5.88 Mcf annually. 5 reservoirs were cleaned and inspected. In 2010 a project to replace the drain valve at the 18th & Kellogg Reservoir was completed. This program contributes 11% of the overall water conservation savings. • Large Meter Testing Program This program has maintained it’s effectiveness in reducing water loss. Part of this can be related to increased customer awareness from a financial as well as from an environmental aspect. This program began on June 6, 2009 and ended August 24, 2009. In terms of maintenance, large meters greater than 2-inch typically underregister water usage and become a source of Unaccounted for Water or water loss. All existing 81 large meters were tested in 2009. 71 of those tested met the 95% or better accuracy criteria over the three flow ranges (low, medium and high) used in the tests. All 10 low registering meters were repaired and able to meet the flow criteria. Final overall average accuracy of all 81 large meters was 98%. In addition five new 3 inch meters were installed in 2009 and 100% accuracy was assumed from the factory. Consumption by the Commercial/Industrial classification accounts for most of the large meters. Total estimated water conserved by the program remains at 6.3 Mcf on an ongoing annual basis. This is about 12% of our overall water conservation savings. At a $1.057 rate per 100 cu. ft. in 2009 this amounts to $66,590. This Customer Class also uses the largest amount of irrigation water annually of all user groups. • Unmetered Water Reporting In March 1996, the City of Kennewick began the Unmetered Water Program to identify and better track unmetered water usage. Such uses include operation and maintenance activities such as; main breaks, street sweeping, flushing hydrants, dust control, fire response by the City, County and private parties as well. This program has increased the awareness of City Departments, outside agencies and Contractors. The Unmetered Water Report for 2009 shows 27.689 MG or 3.70 Mcf can be accounted for by these uses. This quantity of water is estimated or determined by volume measure. In 2009 most Contractor hydrant meters were removed from this category and billed as Commercial/Industrial use. In 2009 City project meters will be reported under the Municipal/Government element as these are metered and non-revenue use. ---PAGE BREAK--- 6 • Residential Meter Repair / Replacement Program In 2009, 291 - ¾” through 2 inch new meters were set. 430 were repaired and put back in operation. • Source Meter Accuracy The City of Kennewick has 2 sources of water, the Ranney Collectors & in Columbia Park that have master meters on North and South header lines and those that monitor raw and finished water at the Kennewick Water Treatment Plant. Collector #4 meter was factory calibrated and approved on 1/9 and again on 6/1 of 2009. Townsend Controls calibrated both #5 meters on April 13, 2009 prior to operation. Both Raw and Finished water meters at the Kennewick Water Treatment Plant were checked for proper operation on September 10, 2009 by Total Energy Management. No errors or issues were found. • Consumer Water Audits Performed The City began a Water Audit Program for Large Water Users. This program is being implemented for water meters 6-inch and greater. The City currently has a total of 5 water meters that fall into this category. An additional audit of Sun Meadows Mobile Home Park was performed in 2009 so 3 of the 5 are now complete. • Water Use Efficiency Goal The City established water use efficiency goals through a public process in 2007. On November 20, 2007 Resolution No. 07-33 was adopted establishing a City water use efficiency goal of maintaining an annual average per capita demand below 170 gallons per day. In 2009, the actual calculated demand value for pumped water was 155 gallons per capita per day. This meets that goal and is more than 150 gpcd calculated in 2008. Future Water Conservation Measures: The City of Kennewick plans to continue our existing Water Conservation programs in 2010. The following Water Conservation related items are currently scheduled for completion in 2010: Continue water distribution main leak survey audits of overlays and other identified areas. Continue Annual Reservoir Leakage Testing program Participate in Public Outreach & Education program. Continue Voluntary Residential Retrofit program for showerheads etc. Continue Annual Large meter (>2-inch) inspection, repair & testing program. Continue with Residential Meter Repair/Replacement Program. Continue large water user audit program. ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- 9 Data Interpretation and Conclusions: The data collection elements from 2007 - 2009 show the following: • Unaccounted for Water or Water loss in Kennewick remained relatively constant throughout the period ranging from 5.2% to 6.1%. Weather does have an effect on all meter classes as in 2009 almost all Customer classes increased. These values still however fall within the bounds of our source metering accuracy Overall the water leak detection program is shown to be the most efficient water conservation measure. It accounts for 75% of our overall water conservation savings since the program began in 1994. Some other key points or data observations are: 1) Estimated service population has continued to rise during the 3-Year report interval. Overall rate was 2.3% and was 1.9% in 2009 alone. 2) Annual Pumpage has increased by 5.7% during this same period. Some of this is strongly driven by weather-related conditions as we had more pumpage in all customer classes in 2009. 3) Annual Peak Pumpage rose during the period by 2.5%. Annual Peak Daily Pumpage rose 31%. These increases are due to an irrigation district canal break that occurred in July. Many of the irrigation district customers had substantial increases in their potable water use while irrigation service was interrupted. Both higher annual peak month and peak daily pumpages were experienced in 2009 than 2008. Summary: The Water Conservation program in 1994 showed our Water Loss was about 17.3%. Some of the reasons for the ~11% overall improvement in reducing this water loss can be attributed directly to the following Water Conservation measures or programs. Table 2. Water Conservation Measures and Estimated Water Reduction Summary Program Measure 2009 Cumulative Total Water Reduction Since 1994 Leak Detection program 0.0215 Mcf 38.93 Mcf Large Meter Testing NA 6.3 Mcf Residential retrofit NA 0.88 Mcf Reservoir Leak Sealing 0.00 Mcf 5.88 Mcf ---PAGE BREAK--- 10 Total 0.0215 Mcf 52.0 Mcf or 1.07 MGD of our annual pumpage in 2009) The Table above shows Water Conservation programs have accounted for 52.0 Mcf of saved water in Kennewick, since they began in 1994. In 2009, they saved 0.0215 Mcf. Some outside factors for improving our water loss picture since 1994 can be related to ongoing and previous residential low-flow showerhead replacement programs and initiating a reservoir leak program in 2000. Reduction in water usage can also be attributed, however, to heightened water conservation awareness through local publicity of salmon Endangered Species Act listings, the Columbia River program and related environmental news. Water Conservation awareness also has been heightened by establishing water conservation goals in a public process in 2007. Breakout in our commercial class of irrigation vs. normal usage has helped as usage for that class decreased substantially since 2008 ~10%. Also Educational outreach in our local schools and also the posting of water conservation related brochures and Consumer Confidence Reports on our City Webpage have helped. A Regional Water Supply System is still fine tuning the municipal water rights legislation definitions. Mitigation still needs to be resolved with Ecology regarding the Quad-City Water Rights and currently new demand forecasts are being calculated. Kennewick realizes the practical importance of continuing our water conservation efforts, in light of periodic drought conditions and continued growth. Drought conditions are predicted to impact our area again in 2009. The Columbia River may not be as affected as other water sources but the City realizes the need to be proactive in the water conservation as it ties directly to the economic vitality and future of our area. The City of Kennewick and their partners in the Quad-City Water Rights comply with and endorse Department of Health water use efficiency rules. Water Use Efficiency rules outline conservation and M&O measures utilities must undertake and set operational criteria that must be met to receive future water allocation. Part of this initiative included conducting a public Water Conservation goal setting process. This was completed in 2007 and established a daily per capita water usage goal of 170 gallons of water per day. In 2009 there are some factors on the horizon that will affect the City’s ability to supply water to our citizens and local industries. Positive issues remain, the Department of Ecology grant for a pilot Aquifer Storage and Recharge Pilot study for the Southridge area and Department of Ecology and their agreements for the Lake Roosevelt drawdown signed in 2007. These factors promise to mitigate future municipal water supply issues for our area and others on the Columbia River. As Water Right Adjudication in the Yakima Valley was completed in 2009, water resources and related municipal planning processes provided by law continue to gain clarity. In particular water mitigation processes that will allow Columbia River allocation are getting more defined on an ongoing basis. Mitigation and the timing of the drawing down of Lake Roosevelt are the critical mitigation process issues and have moved forward and should continue to resolve in 2010. On the horizon are other environmental issues that will have an effect water resources and quality. Climate Change and Greenhouse Gas Emission may have a positive effect. Resurrecting options for breaching the Snake ---PAGE BREAK--- 11 River dams through the NMFS Biological Opinion for Salmon would not only severely challenge the region economically but also lead to potential water quantity and quality problems during summer months when the region needs it most. Regardless of the outcome these efforts take, the City realizes water conservation will continue to play a crucial role in the future of our area. Kennewick and the Quad–Cities region look forward to providing data and support to the Washington Departments’ of Ecology and Health efforts as they continue to develop and refine water resource planning and other programs for utility water conservation programs in the future.