OCEAN HEALTH
Water Quality Index (WQI)
Composite measure of the chemical and physical quality of monitored water, and the first number examined in any pollution dossier.
Threshold Bands
| Band | Range | State |
|---|---|---|
| Clean | ≥ 80 | OK |
| Impaired | 50–80 | WARN |
| Polluted | < 50 | CRIT |
Formula
Sub-index of DO, turbidity, nutrient load, and contaminant panels.