The residual chlorine in tap water from the reservoir was less than 0.05 mg/L, the total count of bacteria was 940 cfu/ml, the total coliform bacteria was more than 1 600 MPN/100 ml and fecal coliforms was 130 MPN/100 ml.

• 并检出尿素、氨氮和氯化物；其浓度高于市政供水；游离余氯<0.；05mg/L；细菌总数最高达940cfu/ml；总大肠菌群最高>1600MPN/100ml；并检出粪大肠菌群(130MPM/100ml)。