Table 1 The water quality standard for chemical contaminants in dialysis water (ISO13959) and the water quality standard for drinking water (the Water Supply Act in Japan)
Group | Category | Maximum allowable levels (mg/L) | ||
|---|---|---|---|---|
Group 1 | Contaminants with documented toxicity in hemodialysis | Chemical contaminants | ISO standard for dialysis water | Water quality standard for drinking water in Japan |
Aluminum | 0.01 | 0.2 | ||
Total chloride | 0.1 | No std. set | ||
Copper | 0.1 | 1 | ||
Fluorine compound | 0.2 | 0.8 | ||
Lead | 0.005 | 0.01 | ||
Nitrate (as N) | 2 | 10 | ||
Sulfate | 100 | No std. set | ||
Zinc | 0.1 | 1 | ||
Group 2 | Electrolytes normally included in dialysis fluid | Calcium | 2 | 300a |
Magnesium | 4 | |||
Potassium | 8 | No std. set | ||
Sodium | 70 | 200 | ||
Group 3 | Trace elements in dialysis water | Antimony | 0.006 | 0.02b |
Arsenic | 0.005 | 0.01 | ||
Barium | 0.1 | 0.7c | ||
Beryllium | 0.0004 | No std. set | ||
Cadmium | 0.001 | 0.003 | ||
Chromium | 0.014 | 0.05 | ||
Mercury | 0.0002 | 0.0005 | ||
Selenium | 0.09 | 0.01 | ||
Silver | 0.005 | No std. set | ||
Thallium | 0.002 | No std. set | ||