ELCO WCPlan2007

• Project Type: Water Conservation Plan
• Contract/PO #: OE PDA 07-60
• Applicant: East Larimer County Water District
• Project Name: East Larimer County Water District Water Conservation Plan
• Title: East Larimer County Water District Water Conservation Plan
• Date: 6/1/2007
• County: Larimer
• Water Conservation - Doc Type: Complete Plan

CHAPTER 4 - WATER USE AND DEMAND FORECAST

Current Water Use

Like most water suppliers in the west, ELCO's water demands are influenced
primarily by customers' need to irrigate their landscape. Peak water use varies
significantly depending on rainfall and always occurs during June, July or August.
Water use during the winter is relatively low and varies little from November
through March.

In 2006, indoor use as measured by winter water use averaged approximately 45
million gallons per month. The highest monthly use ever recorded by ELCO
occurred in July 2006; the metered water use of ELCO's customers that month
totaled 198 million gallons.

Figure 4.1 shows the amount of water delivered each month to ELCO by the
SCFP and the total metered water use of ELCO customers during each month.
Metered water use shown in Figure 4.1 lags plant production due to differences
in meter reading schedules. Plant meters are read daily. ELCO reads meters
and calculates customer consumption over the first two weeks of each month

Figure 4.1 - Comparison of Monthly Plant Production and Metered Water Use of ELCO
Customers in 2006

250,000
en
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.s 150,000
Jo-
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- - - - - - - - - - - - - - - - - - - - - - - - -1- - - - - - - - - - - - - - -\ - - - - - - - - - - - - - - --
/ \
u u u u u u u u _ u u/u u u u u u u u u u u _ _ ~ u u u u u __
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200,000

....
o 100,000

"E
~
o
E
<( 50,000
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~ 0

- - ..;.;. - -.......i. - __ - ___- -J - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ - - -

Jan Feb Mar Apr May Jun Jul Aug Sep Oet Nov Dee

-Treatment Plant Deliveries to ELCO

- · Metered Usage of Customers

Total plant production in 2006 for ELCO was 1.377 billion gallons while the total
metered water use of all active ELCO accounts in 2006 was 1.215 billion gallons,
a difference of 162 million gallons (11.7010). That number represents the amount
of water that was delivered to the District from the SCFP but not measured in
some manner. ELCO personnel thoroughly flush the transmission and

Clear Water Solutions, Inc.
East Larimer County Water District

2007 Water Conservation Plan

30