Wastewater Disposal Options

Wastewater is not allowed in the storm drain or street. However, the wastewater may be discharged to landscaping or the sewer, or it may be picked up and disposed of by a waste hauler. Please note that if you are unsure of the types of pollutants in the wastewater, laboratory analysis may be required to establish the proper disposal method.

Choose one of the 3 wastewater disposal options listed below based upon the following conditions.
  1. Option 1
  2. Option 2
  3. Option 3
Option 1: Discharge Wastewater to a Landscaped Area
The wastewater must meet the following requirements for discharging to landscaping:
  • The pH must be between 6.5 and 8.5. This can be checked through the use of pH paper test strips.
  • The wastewater can not contain large volumes or concentrations of:
    • Toxic materials
    • Degreasers
    • Pollutants that may create a fire or explosion hazard (e.g., gasoline, diesel)
    • Solid or viscous pollutants in amounts sufficient to cause obstruction or blockage of flow
    • Petroleum oil or other products of mineral oil origin
    • Paint
Prior to Surface Washing
Prior to surface washing, you must exercise all reasonable means to eliminate large volumes or concentrations of the above listed pollutants. Common methods to eliminate standing pools of pollutants include the placement of absorbent to absorb the pollutant, dry-sweeping the absorbent, and disposing of the absorbent properly:
  • Wastewater from cleaning food-related vehicles or areas, vehicle exteriors or engines, and buildings with lead- or mercury-based paint should not be discharged to landscaping.
  • Filter the wastewater if it contains debris, fibers, or other suspended solids.
  • Ensure that the wastewater is fully contained within the landscaped area so as to infiltrate into the ground prior to leaving the job site.