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

+1 new sample locations added in the past 30 days

Roundhay Park : Upper Lake: Upper Lake West

Leeds, Leeds, United Kingdom

Waterbody Type:
Lake
Last observed: August 30, 2025
Monitored since: January 26, 2025
8 Observations
1 Issues

Roundhay Park : Upper Lake: Upper Lake East

Leeds, Leeds, United Kingdom

Waterbody Type:
Lake
Last observed: August 30, 2025
Monitored since: January 26, 2025
8 Observations
0 Issues

Larder Lake: Virginiatown Community Park & Boat Launch/Marina

Ontario, Canada

Waterbody Type:
Lake
Last observed: August 29, 2025
Monitored since: June 9, 2018
23 Observations
0 Issues

Salinaty Lake: Centre of Lake

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: August 29, 2025
Monitored since: May 5, 2022
20 Observations
0 Issues

Moulsham Bridge, Moor Green, Finchampstead: Blackwater

Wokingham, England, United Kingdom

Waterbody Type:
River
Last observed: August 29, 2025
Monitored since: April 26, 2025
7 Observations
0 Issues

Mississippi Lake: Mississippi Lake - by Willis Island

Ontario, Canada

Waterbody Type:
Lake
Last observed: August 29, 2025
Monitored since: June 23, 2020
60 Observations
0 Issues

Mississippi Lake: Sinclair Shore - Dock

Ontario, Canada

Waterbody Type:
Lake
Last observed: August 29, 2025
Monitored since: June 16, 2020
62 Observations
0 Issues

Round lake: End of dock

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: August 29, 2025
Monitored since: June 4, 2023
10 Observations
0 Issues

Cranleigh waters : Elmbridge Road bridge

Cranleigh, Surrey, United Kingdom

Waterbody Type:
River
Last observed: August 29, 2025
Monitored since: January 20, 2025
8 Observations
0 Issues

Landings Wood Stream: Landings Wood Stream

Farncombe, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: August 29, 2025
Monitored since: July 31, 2023
22 Observations
0 Issues

The Bourne: Holme Farm

Addlestone, Surrey, United Kingdom

Waterbody Type:
River
Last observed: August 29, 2025
Monitored since: February 23, 2025
7 Observations
0 Issues

Great Heads Beck, Roundhay Park: Great Heads Beck 2

Leeds, Leeds, United Kingdom

Waterbody Type:
Stream
Last observed: August 29, 2025
Monitored since: January 25, 2025
8 Observations
0 Issues

Great Heads Beck, Roundhay Park: Great Heads Beck 3

Leeds, Leeds, United Kingdom

Waterbody Type:
Unknown
Last observed: August 29, 2025
Monitored since: January 25, 2025
8 Observations
0 Issues

Benson Creek: Benson Creek as it enters into Larder Lake

Ontario, Canada

Waterbody Type:
Creek
Last observed: August 28, 2025
Monitored since: September 20, 2021
15 Observations
0 Issues

Larder Lake : Larder Lake Marina

Ontario, Canada

Waterbody Type:
Lake
Last observed: August 28, 2025
Monitored since: July 3, 2017
29 Observations
0 Issues

St Lawrence River: Power Dam Visitor Centre Bike Trail

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: August 28, 2025
Monitored since: July 10, 2025
2 Observations
0 Issues

Cornwall Canal: Cornwall Canal Locks

Cornwall, Ontario, Canada

Waterbody Type:
Canal
Last observed: August 28, 2025
Monitored since: July 10, 2025
2 Observations
0 Issues

Burnt Oak Brook: The Meads/Deansbrook rd

Edgware, England, United Kingdom

Waterbody Type:
Stream
Last observed: August 28, 2025
Monitored since: August 28, 2025
1 Observations
0 Issues

Swan Creek: Blenkinsop Creek: Above Swan Lake

Esquimalt, British Columbia, Canada

Waterbody Type:
Unknown
Last observed: August 28, 2025
Monitored since: November 9, 2013
133 Observations
0 Issues

Swan Creek: Swan Lake

Esquimalt, British Columbia, Canada

Waterbody Type:
Unknown
Last observed: August 27, 2025
Monitored since: November 9, 2013
132 Observations
0 Issues

Swan Creek: Allotment Gardens

Esquimalt, British Columbia, Canada

Waterbody Type:
Creek
Last observed: August 27, 2025
Monitored since: August 7, 2013
117 Observations
0 Issues