Laserfiche WebLink
<br /> <br />[Value given is the maximum allowed, unless otherwise specified] <br /> <br />National (U.S. Environmental Pro- <br />tection Agency, 1976a; 1976b; 1977) <br />and proposed Colorado (Colorado <br />Department of Health, 1977a) <br />drinking-water regulations <br /> <br />Water-qual i ty <br />variable <br /> <br />Temperature (OC)__________ <br />pH (standard units)------- <br />Dissolved oxygen (mg!l)--- <br /> <br />'" <br />'" <br /> <br />Magnesium----------------- <br />Chloride------------------ <br />Fiuoride------------------ . <br />Nitrate (as N)------------ <br />Sulfate------------------- <br />Tot?1 dissolved solids---- <br /> <br />Aluminum------------------ <br />Arsenic------------------- <br />Barium-------------------- <br />8eryllium-----------"----- <br />Boron--------------------- <br />Cadmium------------------- <br />Chromium------------------ <br />Copper--"---------------"- <br />Iron----------------~----- <br />lead---------------------- <br />Manganese----------------- <br />Mercury------------"------ <br />Molybdenum-------------"-- <br />Nickel-------------------- <br />Selenium------------------ <br />Silver-------------------- <br />ThaI I ium------------------ <br />Uranium----------------~-- <br />Zinc---------------------- <br /> <br />Table 5.--Watel'-quaUty standards for water use in Colcl'Gdo <br /> <br />Proposed Colorado water-quality standards <br />(Colorado Department of Health, 1977b) <br /> <br />6) <br />\:;;) <br />N <br />= <br />I"'" <br />o <br /> <br />Water supplyl <br /> <br />Aquat I c li fez <br /> <br />Agriculture3 <br /> <br />Physicochemical variables <br /> <br />56.5~H~8.5 <br /> <br />~20 <br />6.5<pH<9.0 <br />'6":""0 <br /> <br />G5.03>H~. 0 <br /> <br />Major inorganic constituents (mg!l) <br /> <br />5250 <br />8'91.4-2.4 <br />810 <br />.S250 <br />5500 <br /> <br />125 <br />250 <br />91.4-2.4 <br />10 <br />250 <br /> <br />10100 <br /> <br />Trace elements (~g!l) <br /> <br />850 <br />81,000 <br /> <br />11100 <br />50 <br /> <br />100 <br /> <br />50 <br />1,000 <br /> <br />10 <br /> <br />100 <br />750 <br />10 <br />100 <br />200 <br /> <br />810 <br />850 <br />SI,OOO <br />S300 <br />850 <br />550 <br />82 <br /> <br />.4 <br />100 <br />10 <br />IZ1,OOO <br />4 <br />1,000 <br />.05 <br /> <br />10 <br />50 <br />1,000 <br />11300 <br />50 <br />1150 <br />2 <br /> <br />100 <br />200 <br /> <br />810 <br />850 <br /> <br />50 <br />50 <br />.1 <br />15 <br />30 <br />50 <br /> <br />15.0 <br />200 <br />20 <br /> <br />10 <br />50 <br /> <br />55,000 <br /> <br />5,000 <br />5,000 <br /> <br />5,000 <br />2;000 <br />