/-74.7265152,45.0137464,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
St Lawrence river: Lamreoux Park
Cornwall, Ontario, Canada
Waterbody Type:Unknown
Last observed: July 24, 2025 Monitored since: July 24, 2025
Locations
Locations are places where people have tested before. Click on any location report to view water health trends at that spot over time. What's this?
8,224 locations
+33 new sample locations added in the past 30 days
Unknown
Last observed: July 24, 2025 Monitored since: July 24, 2025
/-83.4917378,46.2466794,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lake Huron: Lake Huron
Thessalon, Ontario, Canada
Waterbody Type:Lake
Last observed: July 24, 2025 Monitored since: July 18, 2025
/-0.2571702,51.5959348,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Silk Stream: Montrose Playing Fields Tramshed
London, Barnet, United Kingdom
Waterbody Type:Stream
Last observed: July 24, 2025 Monitored since: July 2, 2024
/-80.3548408,43.384257,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Grand River: Grand River Osprey Loop
Cambridge, Ontario, Canada
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: October 24, 2024
/0.0086904,51.6184562,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
The Ching: Hatch Roundabout - Downstream
London, Waltham Forest, United Kingdom
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: March 21, 2025
/0.008952,51.6189786,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
The Ching: Hatch Roundabout - Upstream
London, Waltham Forest, United Kingdom
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: March 21, 2025
/-60.1728834,46.1307804,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Centennial Wetland: Centennial Arena
Sydney, Nova Scotia, Canada
Waterbody Type:Wetland
Last observed: July 23, 2025 Monitored since: July 23, 2025
/-0.7988691,51.1536569,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Frensham Great Pond: Frensham Great Pond near outlet sluice
Blacknest, Surrey, United Kingdom
Waterbody Type:Pond
Last observed: July 23, 2025 Monitored since: May 31, 2022
/-0.7936335,51.1527148,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Frensham pond: Frensham Pond Inlet stream
Lindford, Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 23, 2025 Monitored since: May 31, 2022
/-0.807023,51.1585423,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Footbridge downstream of junction with Frensham Pond outlet
Blacknest, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: May 30, 2022
/-0.2022708,51.624755,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Folly Brook/Dollis Brook: Darlands Lake (Downstream)
London, Barnet, United Kingdom
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: May 21, 2023
/-0.2078666,51.625002,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Folly Brook/Dollis Brook: Darlands Lake (Upstream)
London, Barnet, United Kingdom
Waterbody Type:River
Last observed: July 23, 2025 Monitored since: May 21, 2023
/-122.8398772,49.1201975,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Henry Bose Creek: @ 138 Street
Surrey, British Columbia, Canada
Waterbody Type:Creek
Last observed: July 22, 2025 Monitored since: July 22, 2025
/-122.83994,49.1216,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Henry Bose Creek: Henry Bose Creek @ 138 Street
Surrey, British Columbia, Canada
Waterbody Type:Creek
Last observed: July 22, 2025 Monitored since: July 22, 2025
/-75.668731,45.596581,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lac Létourneau: Fosse LT1
Val-des-Monts, Quebec, Canada
Waterbody Type:Lake
Last observed: July 22, 2025 Monitored since: January 1, 2017
/-0.1189794,51.6175929,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Wetland: Wetland NE inlet
London, England, United Kingdom
Waterbody Type:Wetland
Last observed: July 22, 2025 Monitored since: July 22, 2025
/-87.9850488,41.7805444,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
St. Joseph's Creek: St. Joseph's Creek @ 59th & Williams Street
Downers Grove, Illinois, United States
Waterbody Type:Creek
Last observed: July 22, 2025 Monitored since: December 21, 2023
/-0.1195147,51.6173731,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Wetland: Broomfield Wetland SE outlet
London, Enfield, United Kingdom
Waterbody Type:Wetland
Last observed: July 22, 2025 Monitored since: March 1, 2025
/-0.1175056,51.6185099,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Broomfield Park Upper Lake West Main Inlet: West Main Inlet
London, England, United Kingdom
Waterbody Type:Lake
Last observed: July 22, 2025 Monitored since: June 11, 2025
/-0.1176774,51.6178838,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Broomfield Park Middle Lake: North Inlet
London, England, United Kingdom
Waterbody Type:Lake
Last observed: July 22, 2025 Monitored since: June 11, 2025
/-0.1178455,51.617608,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Broomfield Middle Lake South: Broomfield Park Middle Lake
London, Enfield, United Kingdom
Waterbody Type:Unknown
Last observed: July 22, 2025 Monitored since: March 1, 2025