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?

8,239 locations

+3 new sample locations added in the past 30 days

Rideau River: 60

Ottawa, Ontario, Canada

Waterbody Type:
River
Last observed: September 17, 2025
Monitored since: September 17, 2025
1 Observations
0 Issues

Lac McGregor: Fosse MG3

Val-des-Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: September 16, 2025
Monitored since: June 12, 2021
38 Observations
0 Issues

Lac McGregor: Fosse MG1

Val-des-Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: September 16, 2025
Monitored since: June 12, 2021
37 Observations
0 Issues

Lac McGregor: Fosse MG2

Val-des-Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: September 16, 2025
Monitored since: June 12, 2021
40 Observations
0 Issues

Lac McGregor: Fosse MG4

Val-des-Monts, Quebec, Canada

Waterbody Type:
Lake
Last observed: September 16, 2025
Monitored since: June 12, 2021
31 Observations
0 Issues

Mississippi lake: My home

Carleton Place, Ontario, Canada

Waterbody Type:
Lake
Last observed: September 15, 2025
Monitored since: June 27, 2025
12 Observations
1 Issues

St. Marys River - Wilson Channel: Matotee Camp

Ontario, Canada

Waterbody Type:
River
Last observed: September 14, 2025
Monitored since: July 17, 2022
32 Observations
0 Issues

Bowker Creek: Cedar Hill Rec

Victoria, British Columbia, Canada

Waterbody Type:
Creek
Last observed: September 14, 2025
Monitored since: September 14, 2025
1 Observations
0 Issues

Bowker: Mouth

Victoria, British Columbia, Canada

Waterbody Type:
Estuary
Last observed: September 14, 2025
Monitored since: October 2, 2024
26 Observations
0 Issues

Dollis Brook: Riverside Park (Downstream)

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: September 14, 2025
Monitored since: May 20, 2023
24 Observations
0 Issues

Dollis Brook: Windsor Open Space - Village Road Outfall

London, England, United Kingdom

Waterbody Type:
River
Last observed: September 14, 2025
Monitored since: July 15, 2025
3 Observations
0 Issues

River Lea: The White House Bridge (Old River Lea)

London, Hackney, United Kingdom

Waterbody Type:
River
Last observed: September 14, 2025
Monitored since: October 14, 2023
22 Observations
0 Issues

Mississippi Lake: Montgomery Shore/First Lake

Ontario, Canada

Waterbody Type:
Lake
Last observed: September 13, 2025
Monitored since: July 18, 2019
61 Observations
0 Issues

Moore's Brook: Outlet

London, England, United Kingdom

Waterbody Type:
Stream
Last observed: September 13, 2025
Monitored since: March 8, 2025
9 Observations
0 Issues

Moore's Brooķ: North Inlet

London, England, United Kingdom

Waterbody Type:
Pond
Last observed: September 13, 2025
Monitored since: March 8, 2025
7 Observations
0 Issues

Moore's Brook: South Inlet

London, England, United Kingdom

Waterbody Type:
Stream
Last observed: September 13, 2025
Monitored since: March 8, 2025
6 Observations
0 Issues

The Ching: Wadham Ave

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: September 12, 2025
Monitored since: December 8, 2023
48 Observations
0 Issues

The Ching: Sainsbury's

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: September 12, 2025
Monitored since: December 15, 2023
45 Observations
0 Issues

River Wey: Broadford Road Bridge

Guildford, England, United Kingdom

Waterbody Type:
River
Last observed: September 11, 2025
Monitored since: July 7, 2025
8 Observations
0 Issues

Ottawa River: Ottawa River

Chute à Blondeau, Ontario, Canada

Waterbody Type:
River
Last observed: September 11, 2025
Monitored since: April 13, 2019
63 Observations
0 Issues

Dollis Brook: Riverside Park (Upstream)

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: September 9, 2025
Monitored since: May 20, 2023
23 Observations
0 Issues