Water Quality - environmental impacts of cannabis

Most cannabis is grown indoors and grow facilities rely on the municipal water distribution system for influent irrigation and wastewater collection system for effluent discharge. Influent filtration and treatment can be necessary for crop optimization which results in energy consumption and waste generation.
If wastewater is sent through a sanitary sewer system, the sewer provider needs to know the type of discharge coming from the grow facility to ensure that they can handle treating that contaminant.
If water is not sent through a wastewater treatment plant via a sanitary sewer system, other options of wastewater treatment must be evaluated. Please coordinate with the local public health agency when considering options.
Inefficient use of water is not only wasteful, but can cause facility damage by encouraging fungal growth, create worker air quality safety hazards and add extra load to the HVAC system, wasting energy. 
How do I properly dispose of other liquid wastes that are not hazardous wastes?

Non-hazardous liquid waste may be transported to a wastewater treatment plant by a licensed wastewater hauler, or via sanitary sewer pipes, so long as the treatment plant knows about the waste and deems it acceptable.
Alternatively, liquid waste may be solidified by mixing with soil or other absorbent material in order to be sent to a landfill. Contact the receiving landfill to confirm the resulting mixture can meet its waste acceptance criteria prior to disposal at the landfill.
Depending on the type and quantity of wastewater generated, other options may be available. Call the technical assistance line at 303-692-3320 for further options.