Water Quality Data
- National freshwater quality indicator for 2007 to 2009, Canada
- National freshwater quality indicator change between 2003-05 and 2007-09
- Freshwater quality in drainage regions for the 2007 to 2009 period, Canada
- Freshwater quality by land use category for the 2007 to 2009 period, Canada
| Water quality category | Number of core stations |
|---|---|
| Poor | 5 |
| Marginal | 30 |
| Fair | 67 |
| Good | 62 |
| Excellent | 9 |
| Total | 173 |
Note: Data from 2006-2008 were used for 24 Quebec stations because 2009 data were not available.
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| Change | Number of stations |
|---|---|
| Improving | 7 |
| Declining | 4 |
| No change detected | 69 |
| Total | 80 |
Note: Change in the indicator between the 2003-05 and 2007-09 periods was assessed at 80 stations in 13 drainage regions across Canada where historical data were available. For each station, change in the indicator was assessed using a consistent set of guidelines and parameters through time.
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Note: Data from 2006-2008 were used for 24 Quebec stations because 2009 data were not available. Care must be taken when comparing regions, as different parameters and guidelines are used to assess water quality across provinces and territories.
Download data file (Excel/CSV; 1.06 KB)
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Note: Data from 2006-2008 were used for 24 Quebec stations because 2009 data were not available.
Download data file (Excel/CSV; 1.60 KB)
Go to indicator chart
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