Table 1.
Drinking water standards versus dialysis water standards
| Chemical | Water Safety Thresholds | |
|---|---|---|
| Maximum Allowable Chemical Contaminant Levels (mg/L) | EPA Drinking Water Standard (mg/L) | |
| Calcium | 2 (0.1 mEq/L) | — |
| Magnesium | 4 (0.3 mEq/L) | — |
| Potassium | 8 (0.2 mEq/L) | — |
| Sodium | 70 (3.0 mEq/L) | — |
| Antimony | 0.006 | 0.006 |
| Arsenic | 0.005 | 0.01 |
| Barium | 0.10 | 2 |
| Beryllium | 0.0004 | 0.004 |
| Cadmium | 0.001 | 0.005 |
| Chromium | 0.014 | 0.1 |
| Lead | 0.005 | 0.015 |
| Mercury | 0.0002 | 0.002 |
| Selenium | 0.09 | 0.05 |
| Silver | 0.005 | 0.1 |
| Aluminum | 0.01 | 0.5–0.2 |
| Chloramines | 0.10 | 4.0 (Cl2) |
| Free chlorine | 0.50 | 4.0 (Cl2) |
| Copper | 0.10 | 1.0 |
| Fluoride | 0.20 | 2.0 |
| Nitrate (as N) | 2.0 | 1.0 |
| Sulfate | 100 | 250 |
| Thallium | 0.002 | 0.002 |
| Zinc | 0.10 | 5.0 |