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

+0 new sample locations added in the past 30 days

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

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

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

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

Nottawaga Bay: Cawaja Beach in front of largest pond

Tiny, Ontario, Canada

Waterbody Type:
Bay
Last observed: July 31, 2025
Monitored since: July 4, 2025
2 Observations
0 Issues

Big Basswood Lake: Jamie Bay sampling

Ontario, Canada

Waterbody Type:
Lake
Last observed: July 31, 2025
Monitored since: June 2, 2023
15 Observations
0 Issues

Rivière Richelieu: Parc Marcel-Fortier

Chambly, Quebec, Canada

Waterbody Type:
Unknown
Last observed: July 31, 2025
Monitored since: July 20, 2022
4 Observations
1 Issues

Spring runoff Pond: North side of the Point, near Walker pathway

Tiny, Ontario, Canada

Waterbody Type:
Pond
Last observed: July 31, 2025
Monitored since: May 19, 2025
2 Observations
0 Issues

Spring run off Pond/creek: At the entrance at concession 11

Tiny, Ontario, Canada

Waterbody Type:
Pond
Last observed: July 31, 2025
Monitored since: June 15, 2025
2 Observations
0 Issues

Spring runoff Pond: Near second entrance, previous known as the Jamieson pond.

Tiny, Ontario, Canada

Waterbody Type:
Pond
Last observed: July 31, 2025
Monitored since: June 28, 2025
5 Observations
0 Issues

Bras d'Or Lake: Iona Port

Iona, Nova Scotia, Canada

Waterbody Type:
Unknown
Last observed: July 31, 2025
Monitored since: June 8, 2025
2 Observations
0 Issues

Moselle Brook: Tottenham Cemetery

London, Haringey, United Kingdom

Waterbody Type:
Stream
Last observed: July 31, 2025
Monitored since: March 5, 2024
15 Observations
0 Issues

Holgar Lake: Channel between peninsula and island

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: July 31, 2025
Monitored since: June 9, 2021
22 Observations
0 Issues

Lake Huron: Hannah’s Camp

Ontario, Canada

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

Bowker Creek : Upstream of the flow meter

Victoria, British Columbia, Canada

Waterbody Type:
Creek
Last observed: July 31, 2025
Monitored since: February 16, 2024
3 Observations
0 Issues

Ruisseau Osisko: Ruisseau Osisko sentiers lac Rouyn

Rouyn Noranda, Quebec, Canada

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

Lac: Lac clair

Val D'Or, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 30, 2025
Monitored since: May 26, 2025
2 Observations
0 Issues

Longmarsh Lane : Longmarsh Lane

London, Greenwich, United Kingdom

Waterbody Type:
Canal
Last observed: July 30, 2025
Monitored since: April 25, 2024
7 Observations
0 Issues

Great Heads Beck: Great Head Becks 1 in Addyman Woods

Leeds, Leeds, United Kingdom

Waterbody Type:
Unknown
Last observed: July 30, 2025
Monitored since: January 26, 2025
7 Observations
0 Issues

Seville River: Near the city center

Seville, Sevilla, Spain

Waterbody Type:
River
Last observed: July 30, 2025
0 Observations
0 Issues

Big Rideau Lake: Barkow lane

Ontario, Canada

Waterbody Type:
Lake
Last observed: July 29, 2025
Monitored since: September 17, 2023
6 Observations
0 Issues