The following map provides links to spreadsheets with summary data tables for each region (and one table for New Zealand that combines regional data) for six water quality indicators: nitrate, E.coli, ammoniacal nitrogen, iron, manganese and electrical conductivity. Each regional spreadsheet contains data for:
- the number of sites exceeding water quality guidelines for each year in period 1995-2008
- percentiles for each year, and
- trend categories for the whole period.
A national summary is also available. [xls, 67.5KB]
Regional spreadsheets
September 2009
© Ministry for the Environment