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Federal Limits
The federal government has established
discharge limits for specific industries, called categorical
dischargers. These must obtain a full King County permit regardless
of their wastewater discharge volume. Categorical industries
include the following:
| Aluminum forming |
Metal foundries |
| Battery manufacturing |
Nonferrous metal
manufacturing |
| Coil coating |
Pesticide manufacturing |
| Copper forming |
Petroleum refining |
| Electrical/electronic
components |
Pharmaceutical
manufacturing |
| Electroplating |
Circuit-board
manufacturing |
| Porcelain enameling |
Iron/steel manufacturing |
| Pulp/paper mills |
Leather tanning
finishing |
| Wood preserving |
Metal finishing |
| Inorganic chemical
manufacturing |
Centralized waste
treatment |
Two Industrial Waste investigators discuss
a sample of wastewater taken while inspecting an industry that
discharges wastewater to the King County sewerage system.
(Page revised 9/25/07. For further information, e-mail Doug
Hilderbrand.)
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