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?

8,209 locations

+97 new sample locations added in the past 30 days

Ottawa River: Ottawa River

Chute à Blondeau, Ontario, Canada

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: April 13, 2019
62 Observations
0 Issues

Mill Stream: Goldie Park (Site 3)

Langford, British Columbia, Canada

Waterbody Type:
Stream
Last observed: August 1, 2025
Monitored since: July 31, 2024
13 Observations
0 Issues

Blakeburn Lagoons: East Lagoon - South Deck

Port Coquitlam, British Columbia, Canada

Waterbody Type:
Lagoon
Last observed: August 1, 2025
Monitored since: August 1, 2021
55 Observations
0 Issues

Mill Stream: Atkins Avenue (Site 5)

Langford, British Columbia, Canada

Waterbody Type:
Stream
Last observed: August 1, 2025
Monitored since: July 31, 2024
13 Observations
0 Issues

Mill Stream: Hartwig-Saunders Park (Site 6)

Victoria, British Columbia, Canada

Waterbody Type:
Stream
Last observed: August 1, 2025
Monitored since: July 31, 2024
12 Observations
0 Issues

Mississippi Lake: Mississippi Lake - by Willis Island

Ontario, Canada

Waterbody Type:
Lake
Last observed: August 1, 2025
Monitored since: June 23, 2020
56 Observations
0 Issues

Desbarats Lake: Desbarats Lake off boat ramp

Ontario, Canada

Waterbody Type:
Unknown
Last observed: August 1, 2025
Monitored since: June 19, 2022
17 Observations
0 Issues

St. Lawrence River: St. Lawrence River Dock River Intitute

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: June 19, 2025
7 Observations
0 Issues

St. Lawrence River: Near Montreal Rd. Culvert outflow, outside of pit

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: June 19, 2025
7 Observations
0 Issues

St. Lawrence River: Montreal Rd. Culvert outflow

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: June 19, 2025
7 Observations
0 Issues

St Lawrence River: Cornwall

Ontario, Canada

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: September 13, 2019
104 Observations
0 Issues

The Ching: 9 Gordon Ave E4

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: August 1, 2025
Monitored since: November 16, 2023
62 Observations
0 Issues

Lea (Old River Lea): Friends Bridge

London, Hackney, United Kingdom

Waterbody Type:
River
Last observed: August 1, 2025
Monitored since: July 31, 2021
114 Observations
0 Issues

The Ching: Highams Park Lake

London, Waltham Forest, United Kingdom

Waterbody Type:
Lake
Last observed: August 1, 2025
Monitored since: January 17, 2024
62 Observations
0 Issues

Old Lea: Flood Relief Channel outflow

London, Waltham Forest, United Kingdom

Waterbody Type:
Unknown
Last observed: August 1, 2025
Monitored since: August 10, 2024
12 Observations
0 Issues

St. Lawrence River: Outside of flag Creek

Morrisburg, Ontario, Canada

Waterbody Type:
Bay
Last observed: August 1, 2025
Monitored since: August 1, 2025
1 Observations
0 Issues

Desbarats River: Municipal Dock

Ontario, Canada

Waterbody Type:
River
Last observed: July 31, 2025
Monitored since: May 30, 2022
21 Observations
0 Issues

Lake Ontario: Jack Darling Park

Port Credit, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 31, 2025
Monitored since: April 13, 2025
2 Observations
0 Issues

Anderson Creek: Old Bridge

Ontario, Canada

Waterbody Type:
Creek
Last observed: July 31, 2025
Monitored since: May 30, 2022
20 Observations
0 Issues

Turtle Creek: Rattray Marsh Conservation Area

Mississauga, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 31, 2025
Monitored since: July 31, 2025
1 Observations
0 Issues

Ross Barnett Reservoir: Lakeshore Park

Brandon, Mississippi, United States

Waterbody Type:
Lake
Last observed: July 31, 2025
Monitored since: April 27, 2018
117 Observations
0 Issues