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?

8,238 locations

+8 new sample locations added in the past 30 days

Broomfield Park Upper Lake: Overflow inlet north of NW Surface Water pipe

London, England, United Kingdom

Waterbody Type:
Unknown
Last observed: July 19, 2025
Monitored since: July 19, 2025

Lake Ontario: Credit River

Mississauga, Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 19, 2025
Monitored since: June 8, 2025

Lake Ontario: Humber River (Mouth)

Toronto, Ontario, Canada

Waterbody Type:
River
Last observed: July 19, 2025
Monitored since: July 19, 2025

Hamilton Harbour: Bayfront Park Beach

Hamilton, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 19, 2025
Monitored since: July 21, 2020

Lake Ontario: Burlington Beachway Park at Dunky's Beach Shack

Burlington, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 19, 2025
Monitored since: May 25, 2025

River Wey: U/S Station Road

Isington, Hampshire, United Kingdom

Waterbody Type:
River
Last observed: July 18, 2025
Monitored since: May 24, 2024

North River: North River Boathouse

Baddeck, Nova Scotia, Canada

Waterbody Type:
Estuary
Last observed: July 18, 2025
Monitored since: May 25, 2025

Welland Canal : Welland International Flatwater Centre

Welland, Ontario, Canada

Waterbody Type:
Canal
Last observed: July 16, 2025
Monitored since: January 10, 2025

St. Lawrence River: Gazebo near water treatment plant.

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: July 16, 2025
Monitored since: July 16, 2025

Lac Robinson: ROB1

Val Des Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 16, 2025
Monitored since: June 17, 2024

Petit lac Huot: PHL1

Quebec, Canada

Waterbody Type:
Lake
Last observed: July 16, 2025
Monitored since: June 14, 2024

Hogsmill: Saipem S5 - Tolworth Brook

London, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: July 16, 2025
Monitored since: April 2, 2025

Cougar Creek: Site - 8

Surrey, British Columbia, Canada

Waterbody Type:
Creek
Last observed: July 16, 2025
Monitored since: July 16, 2025

Silver Creek: Silver Creek

Port Moody, British Columbia, Canada

Waterbody Type:
Stream
Last observed: July 15, 2025
Monitored since: May 17, 2023

Lac Saint-Pierre: Fosse SP2

Val-des-Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 15, 2025
Monitored since: June 8, 2021

Lac Coupal: Lac Coupal boat launch

Montcerf Lytton, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 15, 2025
Monitored since: July 15, 2025

Hogsmill: Middle Mill

London, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: July 15, 2025
Monitored since: June 21, 2024

St. Lawrence River: Mariatown Bay - Erosion Project site

Ontario, Canada

Waterbody Type:
Bay
Last observed: July 14, 2025
Monitored since: July 24, 2023

Black Creek: Black Creek South of Shoreham

North York, Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 14, 2025
Monitored since: July 14, 2025

Tiffany Creek: Tiffany Creek d/s of Filman Road

Ancaster, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 14, 2025
Monitored since: July 14, 2025

Tiffany Creek: Tiffany Creek d/s of Tiffany Falls

Ancaster, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 14, 2025
Monitored since: July 14, 2025