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Utilities

Water Supply Requirement Update#

Horsetooth Reservoir

Water Supply Requirements (WSRs) are met by developers to account for the additional demand created from new development. These water supplies ensure a reliable source of water in all years and are translated into an equivalent annual water allotment for commercial and irrigation taps. When the allotment is exceeded, an Excess Water Use surcharge is applied to all water used over the allotment for the remainder of the year.

What is being proposed: Over the past year and a half, Staff has drafted a proposal to update the water supply requirement calculations to better reflect a development’s characteristics (e.g. size, business type, landscaping) in an effort to better align a development’s water supply requirement and water use. Specifics are summarized below:

 

Current System Calculation

Proposed Future System Calculation

Commercial

Tap Size

Business Type and Predictor Variable (e.g. gal/sq ft)

Residential

1.92 x (Number of Bedrooms + Lot Size)

Number of Bedrooms + Pervious Area

Multifamily

1.92 x (Number of Bedrooms + Lot Size)

Number of Bedrooms

Separate irrigation tap required for all outdoor irrigation.

Irrigation

Tap Size

Water budget table found on Landscape Plans

Separate irrigation tap required for all outdoor irrigation in commercial and multifamily developments.