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.
Quality of clean, moderately polluted and highly polluted water: concentration of phosphate, nitrate, and total organic carbon (TOC), pH and electrical conductivity (EC)
| Parameter | Clean water | Moderately polluted water | Highly polluted water |
|---|---|---|---|
| Phosphate (mg. L−1) | < 0.01 | 2 | 6 |
| Nitrate (mg. L−1) | < 0.01 | 5 | 50 |
| TOC (mg. L−1) | < 0.01 | 5 | 10 |
| pH | 7.33 | 7.17 | 7.24 |
| EC (µS/cm) | 380.4 | 465.6 | 544.2 |
