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

+9 new sample locations added in the past 30 days

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

Dollis Brook : Outfall at RMI Site

London, England, United Kingdom

Waterbody Type:
River
Last observed: September 9, 2025
Monitored since: June 15, 2025
4 Observations
0 Issues

Folly Brook: Folly pre confluence

London, England, United Kingdom

Waterbody Type:
River
Last observed: September 9, 2025
Monitored since: February 5, 2025
8 Observations
0 Issues

Dollis Brook : Brook Farm Open Space

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: September 8, 2025
Monitored since: November 7, 2024
9 Observations
0 Issues

Mississippi Lake: Black Bass Bay

Ontario, Canada

Waterbody Type:
Lake
Last observed: September 8, 2025
Monitored since: July 29, 2024
15 Observations
0 Issues

Dollis Brook: Quinta Open Space

London, Barnet, United Kingdom

Waterbody Type:
Stream
Last observed: September 8, 2025
Monitored since: November 7, 2024
9 Observations
0 Issues

River Brent: Brent Cross

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: September 8, 2025
Monitored since: February 18, 2025
9 Observations
0 Issues

Dollis Brook : Whetstone Stray

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: September 8, 2025
Monitored since: November 7, 2024
16 Observations
0 Issues

Upper French River : Satchel’s Bay

Ontario, Canada

Waterbody Type:
Unknown
Last observed: September 7, 2025
Monitored since: June 30, 2024
6 Observations
0 Issues

Mill Bourne: Philpott Lane, Mill Bourne

Woking, England, United Kingdom

Waterbody Type:
Stream
Last observed: September 7, 2025
Monitored since: July 27, 2025
2 Observations
0 Issues

Bay of Quinte : 6.1

Ontario, Canada

Waterbody Type:
Bay
Last observed: September 6, 2025
Monitored since: August 7, 2024
3 Observations
0 Issues

Pond: Chinbrook wetlands outlet pond

London, Bromley, United Kingdom

Waterbody Type:
Wetland
Last observed: September 5, 2025
Monitored since: October 27, 2024
7 Observations
0 Issues

Pond: Chinbrook wetlands inlet pond

London, Bromley, United Kingdom

Waterbody Type:
Wetland
Last observed: September 5, 2025
Monitored since: October 27, 2024
7 Observations
0 Issues

Lagoon: Lagoon output off Peachy Street

Ontario, Canada

Waterbody Type:
Stream
Last observed: September 4, 2025
Monitored since: May 1, 2025
15 Observations
0 Issues

Moira Lake: Kiwanis Boat Launch off Hwy 62 S of Madoc

Ontario, Canada

Waterbody Type:
Lake
Last observed: September 2, 2025
Monitored since: November 27, 2017
21 Observations
0 Issues