567—39.10 (455B) Designation of standby wells.
	 39.10(1)  Standby wells. A standby well must be disinfected prior to being taken out of use for a long period of time and must be disinfected and, as a minimum, checked for bacteria and nitrates when placed back in service. Disinfection of standby wells shall be done in accordance with AWWA (American Water Works Association) Standard A100. The well must not be subject to contamination by surface drainage or from other causes, and the well casing must be provided with an airtight cover when the well is not in use. A well must be repaired so that there is no degradation of groundwater and it is suitable for use prior to being classified as a standby well.
	 39.10(2)  Caveat. Nothing in these rules shall be construed as exempting public water supply wells from requirements set forth in the environmental protection commission rules, 567—Iowa Administrative Code.