Pretreatment Limits
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No user shall discharge wastewater with pollutant concentrations in excess of
the table below unless (1) an exception has been granted to the user by
WKUD; or (2) the wastewater discharge permit of the user provides as a
special permit condition a higher interim concentration level in conjunction
with a requirement that the user construct a pretreatment facility or
institute changes in operation and maintenance procedures to reduce the
concentration of pollutants to levels not exceeding standards set forth in
the table within a fixed period of time.
Maximum Concentration in mg/l (24 hour Flow)
| Pollutant |
Proportional Composite Sample |
| Copper (Cu) |
2.33 |
| Chromium (Cr) |
3.00 |
| Nickel (Ni) |
2.00 |
| Cadmium (Cd) |
0.11 |
| Lead (Pb) |
0.80 |
| Mercury (Hg) |
0.0065 |
| Silver (Ag) |
0.23 |
| Zinc (Zn) |
0.25 |
| Cyanide (CN) |
0.22 |
| Arsenic (Ar) |
0.18 |
| Toluene |
1.71 |
| Benzene |
0.07 |
| 1,1,1 Trichlorethane |
1.09 |
| Ethyl Benzene |
0.32 |
| Carbon Tetrachloride |
0.24 |
| Chloroform |
1.79 |
| Tetrachloroethylene |
0.35 |
| Trichloroethylene |
0.80 |
| 1,2 Trans Dichloroethylene |
0.06 |
| Methylene Chloride |
0.77 |
| Total Phenols |
3.64 |
| Napthalene |
0.10 |
| Total Phthalates |
0.13 |
|
