The main source of pollution is untreated domestic and industrial wastewater.
In addition, the Village operates a municipal physical/chemical treatment plant that receives industrial wastewater from its factories.
Most municipal plants are not designed to treat toxic pollutants found in industrial wastewater.
This new regulation was developed because of the damage that industrial wastewater is causing to the sewer system.
That it not to say that there are no incentives for companies to treat industrial wastewater, however.
Untreated municipal and industrial wastewater poses a threat to water quality as well.
There is no pre-treatment of industrial wastewater discharged into the sewer network.
With the proper treatment, a significant proportion of industrial on-site wastewater might be reusable.
Today, only 14 percent of Mexico's municipal and industrial wastewater is treated at all.
The potential of this technology to treat industrial wastewater is under study, some of the results: