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State Drinking Water Standards & Analytical Techniques <br />.rte ~ • <br />h «p:!/www.l i braries. way ne. ed u/elaw/water/sd wa/sdwrul e6. h tm I <br />PART 6. STATE DRINKING WATER STANDARDS AND ANALYTICAL <br />TECHNIQUES <br />R 325.10601 Purpose. <br />Rule 601. Maximum contaminant levels for organic and inorganic chemicals, microbiological <br />contaminants, and turbidity contained in the federal act are incorporated by reference in Section 6 of act. <br />The purpose of this Part is to establish certain MCL's for specific contaminants which aze not adopted by <br />reference by Section 6 of the Act or which are different than the MCL's contained in the federal act; and <br />which shall be met by a supplier of water to assure protection of the public health; and to specify methods <br />to be used in the analyses of water samples from public water supplies to determine compliance with the <br />state drinking water standards. <br />R 325.10602 MCL's for coliform bacteria. <br />Rule 602. Compliance with the MCL for coliform bacteria shall be determined in accordance with Part 7 <br />of these Rules. The following are the MCL's for coliform bacteria applicable to all public water supplies: <br />(a) When the membrane filter technique is used, the number of coliform bacteria shall be less than l per <br />100 milliliters in any sample collected and analyzed. <br />(b) When the fermentation tube method and either ]0 milliliter or 100 milliliter standard portions are used, <br />coliform bacteria shall no[ be present in any portion of any sample collected and analyzed. <br />R 325.10603 MCL's for radium 226, radium 228, and gross alpha particle radioactivity in type I <br />public water supplies. <br />Rule 603. The MCL's for radium 226, radium 228, and gross alpha particle radioactivity for type I public <br />water supplies are as follows: <br />(a) Combined radium 226 and radium 2285 pCi per liter. <br />(b) Gross alpha particle activity, including radium 226 but excluding radon and uranium 15 pCi per liter. <br />R 325.10604 MCL's for beta particle and photon radioactivity from manmade radionuclides in type <br />I public water supplies. <br />Rule 604. <br />(1) The average annual concentration of beta particle and photon radioactivity from manmade <br />radionuclides in drinking water of <br />type I public water supplies shall not produce an annual dose equivalent <br />to [he total body or any internal organ greater than 4 millirems per year. <br />(2) Except for the radionuclides listed in table I, the concentration of manmade radionuclides in type I <br />public water supplies causing 4 millirems total body or organ dose equivalents shall be calculated on the <br />basis of a 2 liter per day drinking water intake using 168hour data listed in "Maximum Permissible Body <br />I of 5 7/21!99 3:3 (PM <br />