| #Q001 | operational | operational | recommended | Specialist Consultation Recommendation | drinking water | Since there are several types of purifiers, it is recommended that you consult a specialist in domestic drinking water. | | high |
| #Q002 | design | treatment | mandatory | Device Compliance with NSF/ANSI Standards | drinking water | The device must also comply with NSF/ANSI standards, which cover, in particular:
* device performance;
* its physical and structural integrity. | | high |
| #Q003 | administrative | operational | mandatory | Plumbing Contractor Licence Requirement | drinking water | Only a plumbing contractor holding a licence from the Régie du bâtiment du Québec may connect a drinking water purifier serving 20 or fewer people to your plumbing system. | Applies when the drinking water purifier serves 20 or fewer people. | high |
| #Q004 | administrative | operational | mandatory | Ministry Authorization for Purifiers | drinking water | The Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs must authorize any installed drinking water purifier that serves more than 20 people. | Applies when the installed drinking water purifier serves more than 20 people. | high |
| #Q005 | monitoring | health | mandatory | Regular Water Quality Monitoring | drinking water | The person responsible must ensure regular monitoring of water quality. | | high |