Industrial Wastewater

Wastewater Discharge Graphic

The Port of Longview has three berths with capacity for industrial wastewater collection, Berths 2, 5 and 7. Berths with industrial wastewater collection provided added benefits to our customers. Cargo operations can occur more efficiently when process water can be treated after use for dock washing.  

After the Port completes pre-treatment, the industrial wastewater is conveyed through the City of Longview or Cowlitz County's sanitary sewer to Three Rivers Regional Wastewater Plant.

Since 2015, when the Port improved the industrial wastewater pond, we have increased pre-treatment volumes by triple the 2014 numbers. The graph to the right illustrates the total annual volume of wastewater pre-treatment at our Berth 7 pre-treatment facility.


IWTP Sites Graphic