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Elk River <br /> Municipal Utilities <br /> 13069 Orono Parkway phone: 763.441.2020 <br /> Elk River,MN 55330 Fax:763.441.8099 <br /> January 2, 2007 <br /> To: Elk River Municipal Utilities Commission <br /> Jerry Takle <br /> John Dietz <br /> Jim Tralle <br /> From: Bryan Adams <br /> Subject: Alternate Water Service Line Material <br /> The current approved materials for water service lines are type K. copper for 1"diameter to <br /> 2" diameter and 150 lb class ductile iron pipe (DIP) for greater than 2"diameter. <br /> Due to the cost, thief problem and decreasing quality of K. copper, many of the contractors <br /> working in Elk River request use of other water service line material. <br /> Elk River Municipal Utilities has been using high density polyethylene (HDPE)water mains <br /> for some time. Going to HDPE service lines also makes good sense as an alternate to K. <br /> copper. Most other communities allow alternate materials to K. copper as well and it is <br /> generally the HDPE type materials. We are suggesting a totally fuse system where some <br /> communities allow a compression fitting system. The attached drawing reflects the 3 <br /> different service line conditions. They are as follows: <br /> 1)DIP main—K. Copper Service Line <br /> 2) DIP main—HDPE Service Line <br /> 3)HDPE main—HDPE Service Line <br /> Staff recommends amending section 104 of the water rules to allow HDPE service lines. <br />