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?

8,158 locations

+91 new sample locations added in the past 30 days

The Ching: D/S Whitehall Rd

Buckhurst Hill, Redbridge, United Kingdom

Waterbody Type:
Stream
Last observed: July 11, 2025
Monitored since: July 19, 2024
46 Observations
1 Issues

The Ching: Whitehall Outfalls

Buckhurst Hill, Redbridge, United Kingdom

Waterbody Type:
Stream
Last observed: July 11, 2025
Monitored since: July 19, 2024
44 Observations
0 Issues

Dollis Brook : Brook Farm Open Space

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: July 11, 2025
Monitored since: November 7, 2024
6 Observations
0 Issues

The Ching: 9 Gordon Ave E4

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: July 11, 2025
Monitored since: November 16, 2023
59 Observations
0 Issues

The Ching: Highams Park Lake

London, Waltham Forest, United Kingdom

Waterbody Type:
Lake
Last observed: July 11, 2025
Monitored since: January 17, 2024
59 Observations
0 Issues

Edgware Brook: Chandos Park (Upstream)

London, Harrow, United Kingdom

Waterbody Type:
Stream
Last observed: July 11, 2025
Monitored since: February 9, 2024
19 Observations
0 Issues

Dollis Brook : Whetstone Stray

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: July 11, 2025
Monitored since: November 7, 2024
7 Observations
0 Issues

Hogsmill: Bonesgate

Epsom, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: July 11, 2025
Monitored since: November 22, 2024
9 Observations
0 Issues

Réservoir du Poisson Blanc: 42B-Halte de pique-nique

Notre Dame Du Laus, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 11, 2025
Monitored since: July 8, 2025
1 Observations
0 Issues

Ross Barnett Reservoir: Madison Landing

Ridgeland, Mississippi, United States

Waterbody Type:
Lake
Last observed: July 10, 2025
Monitored since: February 27, 2025
10 Observations
0 Issues

Pearl River: Coal Bluff Park

Lena, Mississippi, United States

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: September 19, 2018
152 Observations
0 Issues

Pearl River: Leake County Water Park

Canton, Mississippi, United States

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: July 3, 2019
138 Observations
0 Issues

Muddy Creek: Muddy Creek at deer run

Wheatley, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 10, 2025
Monitored since: July 10, 2025
1 Observations
0 Issues

Cedar Creek: Cedar creek 14B

Harrow, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 10, 2025
Monitored since: July 10, 2025
1 Observations
0 Issues

Hogsmill: Berrylands Bridge

London, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: June 20, 2024
10 Observations
0 Issues

Mississippi Lake: Ikwe Pt

Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 10, 2025
Monitored since: August 16, 2022
32 Observations
0 Issues

Pearl River: Westbrook Rd

Brandon, Mississippi, United States

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: April 28, 2021
57 Observations
0 Issues

John ‘s Pond : John pond

Windsor, Ontario, Canada

Waterbody Type:
Pond
Last observed: July 10, 2025
Monitored since: July 10, 2025
1 Observations
0 Issues

Purple Creek: Purple Creek

Jackson, Mississippi, United States

Waterbody Type:
Creek
Last observed: July 10, 2025
Monitored since: April 28, 2021
56 Observations
0 Issues

St Lawrence River: Power Dam Visitor Centre Bike Trail

Cornwall, Ontario, Canada

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: July 10, 2025
1 Observations
0 Issues

East end of Milford Millpond on Black River : East side of Hamlet of Milford K0K2P0

Milford, Ontario, Canada

Waterbody Type:
River
Last observed: July 10, 2025
Monitored since: March 26, 2017
61 Observations
1 Issues