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M I N N E S 0 T A MINNESOTA DEPARTMENT OF HEALTH <br /> MDH Section of Drinking Water Protection <br /> Sanitary Survey Report <br /> DEPARTMENT OF HEALTH <br /> Og water Pao <br /> System Name:Elk River Survey Date:05/21/2015 <br /> PWSID:1710004 Surveyor:Kim Anding Larsen, P.E. <br /> System Contact:Eric J.Volk PWS Type:Community <br /> Requirements and Recommendations <br /> Monitoring/Reportinq Data Verification <br /> The following applicable records are required to be maintained by the water supply system: <br /> a. Coliform bacteria results - 5 years <br /> b. Chlorine residual results - 5 years <br /> c. Chemical results - 10 years <br /> d. Sanitary survey reports - 10 years <br /> e. All lead and copper materials - 12 years <br /> f. Consumer confidence reports - 3 years <br /> g. Public Notices - 3 years <br /> h. Fluoride quarterly results and monthly reports - 1 year <br /> i. Turbidity results - 3 years <br /> [Minn. Rules 4720.0350] <br /> Water System Management/Operation <br /> As a reminder, engineering plans for new, modifications to, or additions to the water supply <br /> system, including watermains, are required to be properly submitted to the Minnesota Department <br /> of Health for review. All plans must be approved prior to the start of construction. [Minn. Rules <br /> 4720.0010] <br /> To ensure security, it is recommended that a daily check of critical system components be <br /> conducted, including confirmation that all doors and access hatches are locked. <br /> It is recommended that a comprehensive program of cross-connection surveillance be instituted <br /> to protect the water supply. This includes: <br /> a. The detection and correction of cross-connections to unsafe water supplies. <br /> b. The education of the public on the dangers of cross-connections. <br /> c. The installation of vacuum breakers on all threaded hose bibbs in new and old buildings. <br /> d. The replacement of defective plumbing in older buildings. <br /> e. Periodic cross-connection inspections of potentially hazardous industries and commercial <br /> establishments. <br /> f. The education of the employees on the dangers of cross-connections. <br /> Page 2 of 4 <br /> 279 <br />