87.14.1. Prohibition concerning tertiary treatment systems with disinfection using ultraviolet radiation: If disinfection is achieved by ultraviolet radiation, the installation of a tertiary treatment system with disinfection or a tertiary treatment system with phosphorous removal and disinfection is prohibited.
That prohibition is lifted, however, if the municipality in whose territory the system is installed carries out the maintenance of the systems referred to in the first paragraph pursuant to section 25.1 of the Municipal Powers Act (chapter C-47.1).
The first paragraph does not apply to persons to whom a permit was issued under section 4 by a municipality before 4 October 2006.