Water reuse involves reusing suitably treated wastewater from one process for a different purpose.

No other lake in the United States receives as much of its inflow as treated wastewater.

That it not to say that there are no incentives for companies to treat industrial wastewater, however.

Few sewage treatment facilities were constructed in the late 19th century to treat combined wastewater because of the associated difficulties.

At the city level, treated wastewater is being reused for landscaping, irrigation and in industries such as refining.

The potential of this technology to treat industrial wastewater is under study, some of the results:

Figueroa et al. (2008), treated wastewater from a fish canning industry.

López-Palau et al. (2009), treated wastewater from a winery industry.

Bioreactors are also designed to treat sewage and wastewater.

"Recycling treated municipal wastewater for industrial water use".