Environmental Pollution Concerns Come To Forefront Reports that the state finds El Dorado Irrigation District's drinking water system primitive, outdated and an avenue for hazardous pollutants sent El Dorado County residents scrambling for more information Wednesday. The message that pregnant, elderly and sick residents should boil their water or buy it bottled was buried in fine print in the 28,000 notices mailed in September to EID customers. Dozens of residents called EID offices Wednesday after The Bee obtained a copy of a state report showing photographs of manure piles,