Revised Canadian Water Quality Guidelines for the Protection of Aquatic Life--Nitrate Ion--were posted online on July 12, 2012 at http://ceqg-rcqe.ccme.ca/. These guidelines provide numeric values to protect freshwater and marine biota from both short-term and long-term exposures.  The guidelines were revised by Ontario Ministry of the Environment, with assistance from the National Guidelines and Standards Office, Environment Canada, for the Water Quality Task Group of the Canadian Council of Ministers of the Environment (CCME).

A summary table of the Canadian Environmental Quality Guidelines can be found online at http://st-ts.ccme.ca/, and the scientific supporting documents are available at http://www.ccme.ca/publications/ceqg_rcqe.html?category_id=125#401. To receive updates of other CCME publications, visit www.ccme.ca/contactus/subscribe.html  to add yourself to the CCME listserv.    

For further scientific information:

Contact: Doug Spry, 819-953-1550, Doug.Spry@ec.gc.ca | Environment Canada, National Guidelines and Standards Office, 200 Sacré-Coeur Blvd., Gatineau, QC K1A 0H3