This table lists the amounts of selected impurities in the tap water provided in Anyang, as published in the December issue of 우리안양. There are three water treatment plants servicing Anyang -- 비산정수장, 포일정수장, and 청계통합정수장. A # sign indicates that levels were either negligible or undetectable. These tests are conducted monthly and the new information is published in 우리안양.
| Impurity | Quality standard (no more than) | 비산정수장 | 포일정수장 | 청계통합정수장
|
| Phenol | 0.005mg/L | # | # | #
|
| Ammonia성질소 | 0.5mg/L | # | # | #
|
| Chlorine | 4mg/L | 1.0 | 0.9 | 0.9
|
| Aluminum | 0.2mg/L | 0.02 | 0.02 | 0.03
|
| Fluorine | 1.5mg/L | # | # | #
|
| Cyanogen | 0.01mg/L | # | # | #
|
| 경도 | 300mg/L | 61 | 60
|
| 탁도 | 0.3NTU | 0.07 | 0.05 | 0.06
|
| Color level (색도) | 5 degrees | 1 | 1 | 1
|
| Ionic chlorine | 250mg/L | 14 | 17 | 15
|
| Ionic sulphuric acid | 200mg/L | 14 | 15 | 14
|
| Detergent | 0.5mg/L | # | # | #
|
| Smell and taste | none | Suitable | Suitable | Suitable
|
| Organic matter (유기물질) | ㅣLess than 15 kinds of parathion | # | # | #
|
| Chloroform | 0.08mg/L | 0.0358 | 0.0388 | 0.0373
|
| Zinc | 0.1mg/L | # | # | #
|
| Chlorohydrate | 0.03mg/L | 0.0055 | 0.0077 | 0.0055
|
| Ascetic acid | 0.1mg/L | 0.0089 | # | 0.0075
|
| 디클로로아세토니트릴 | 0.09mg/L | 0.0014 | 0.0021 | 0.0021
|
| 트리클로로아세토니트릴 | 0.004mg/L | # | # | #
|
| 디브로모ascetic acid | 0.1mg/L | # | # | #
|
| Methane | 0.1mg/L | 0.042 | 0.046 | 0.046
|
| 증발잔류잔 | 500mg/L | 82 | 84 | 82
|
| Heavy metals and 무기물질 | No more than 10 kinds of mercury | # | # | #
|
| Nitric acid | 10mg/L | 11.4 | 1.4 | 1.4
|
| Ionic hydrogen | 5.8 ~ 8.5 | 7.2 | 7.1 | 7.4
|
| Permangenic acid | 10mg/L | 1.5 | 1.5 | 1.5
|
| General bacteria | 100CFU/mL | 0 | 0 | 0
|
| Colon bacillus | 0 | # | # | #
|
| Colon bacillus | 0 | # | # | #
|
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