Table 4.3
Top ten substances released to water according to the National Pollutant Release Inventory, 2009

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Top ten substances released to water according to the National Pollutant Release Inventory, 2009


Table summary
This table displays the results of top ten substances released to water according to the national pollutant release inventory releases to water  and share of total, calculated using tonnes and percent units of measure (appearing as column headers).

  Releases to water  Note 1 Share of total
  tonnes percent
Nitrate (ion in solution at pH
>= 6.0)
55,724 47.1
Ammonia (total)  Note 2 51,210 43.3
Phosphorus (total) 6,053 5.1
Methanol 1,544 1.3
Manganese (and its compounds) 1,256 1.1
Ethylene glycol 762 0.6
Chlorine 303 0.3
Zinc (and its compounds) 219 0.2
Total Reduced Sulphur (TRS) 195 0.2
Benzene 136 0.1
1.
Includes direct discharges, spills and leaks.
2.
Refers to the total of both ammonia (NH 3) and ammonium ion (NH4+) in solution.
Source(s):
Environment Canada, Pollutant Inventories and Reporting Division, 2011, National Pollutant Release Inventory (NPRI) Downloadable Datasets, www.ec.gc.ca/inrp-npri/default.asp?lang=en&n=0EC58C98- (accessed February 14, 2012).
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