Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Permissible limits of the parameters used in calculating WQI [43].
| Parameters | Permissible limits |
|---|---|
| Dissolved oxygen, mg/l | 10 |
| pH | 8.5 |
| Conductivity, μS/cm | 1000 |
| Biological oxygen demand, mg/l | 5 |
| Nitrate, mg/l | 45 |
| Fecal coliform, Cfu/100 ml | 100 |
| Total coliform, Cfu/100 ml | 1000 |
