PROJ01921 ‎(2)‎

• Contract/PO #: C153311
• Contractor Name: Nunn, Town of
• Contract Type: Loan
• Water District: 1
• County: Weld
• Bill Number: SB 78-69
• Loan Projects - Doc Type: Project Summary

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The Town of Nunn had a critical water quality problem with

their existing shallow wells. The town was informed by the State

Department of Health that the town must correct the problem of

excessively high nitrates in the raw water supply or face

classification of the water system as non-potable or possibly
have the supply shut down. The concentration of nitrates in the
raw water supply varied from about 80 mg/l to 130 mg/l of nitrate
(N03-) as compared with the mandatory state standard of 45 mg/l
( ppm) .

The existing deep well,was constructed in 1973-1974 for the

purpose of obtaining a sufficient supply of the low nitrate water

to solve the water quality problem that exists. However, the

well has not been able to supply enough water (12-13 gpm
currently) to meet the town's needs. It appears that the yield
of the well is in the common range for deep wells constructed

into the Laramie/Fox Hills formation in the general Nunn area

(i.e., Spring Creek and Lone Tree Creek d~ainages).

Feasibility Study

A feasibility study was completed which consisted of an
investigation of the water quality problem of the existing wells
and the determination of various alternatives for providing a
solution to the nitrate problem. An analysis of the existing
distribution system including storage requirements was also
made. Recommendations were made for improvements to the distri-
bution system and for additional storage. The recommended
alternative for correcting the nitrate problem was presented. A

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