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?

7,864 locations

+70 new sample locations added in the past 30 days

River Brent Ealing Golf Course: River Brent by 18th tee

London, Ealing, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: September 19, 2024
4 Observations
0 Issues

River Brent Ealing Golf Course: River Brent west side of bridge to clubhouse

London, Ealing, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: September 19, 2024
4 Observations
0 Issues

Old Lea: Bottom of Berms

London, Waltham Forest, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: August 10, 2024
6 Observations
0 Issues

Hogsmill: Downstream Stepping Stones

Epsom, Surrey, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: June 22, 2024
6 Observations
0 Issues

Kyd Brook : Kyd Brook Hawkswood Estate

London, Bromley, United Kingdom

Waterbody Type:
Stream
Last observed: March 8, 2025
Monitored since: July 8, 2023
20 Observations
0 Issues

Brook: St Joseph Hood Memorial Playing Fields

London, Merton, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: January 11, 2025
4 Observations
0 Issues

Hogsmill: Green Lanes A (downstream of old green lanes stream)

Epsom, Surrey, United Kingdom

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: November 22, 2024
5 Observations
0 Issues

South Retention Pond (Ridout Pond): South Retention Pond HPNC 2

Toronto, Ontario, Canada

Waterbody Type:
Unknown
Last observed: March 7, 2025
Monitored since: March 7, 2025
1 Observations
0 Issues

Cultus Lake: Main Beach Docks

Cultus Lake, British Columbia, Canada

Waterbody Type:
Lake
Last observed: March 7, 2025
Monitored since: June 8, 2023
3 Observations
0 Issues

Suddene stream, below sewage treatment: Tom & Deborah Beese

Kennet District, Wiltshire, United Kingdom

Waterbody Type:
Unknown
Last observed: March 7, 2025
Monitored since: June 1, 2024
10 Observations
0 Issues

Hogsmill: Ewell Storm Tank

Epsom, Surrey, United Kingdom

Waterbody Type:
River
Last observed: March 7, 2025
Monitored since: November 21, 2024
5 Observations
0 Issues

Hogsmill: Middle Mill

London, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: March 7, 2025
Monitored since: June 21, 2024
7 Observations
0 Issues

Hogsmill: Bonesgate

Epsom, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: March 7, 2025
Monitored since: November 22, 2024
5 Observations
0 Issues

Beverley Brook: Barnes Common Riverfly site

London, Richmond upon Thames, United Kingdom

Waterbody Type:
River
Last observed: March 7, 2025
Monitored since: December 13, 2024
4 Observations
0 Issues

Fox River: Fox River Yorkville IL

Yorkville, Illinois, United States

Waterbody Type:
River
Last observed: March 6, 2025
Monitored since: November 30, 2023
12 Observations
0 Issues

Chicago River: River Park Boathouse

Chicago, Illinois, United States

Waterbody Type:
River
Last observed: March 6, 2025
Monitored since: January 2, 2023
39 Observations
0 Issues

Hogsmill: Berrylands Bridge

London, Kingston upon Thames, United Kingdom

Waterbody Type:
River
Last observed: March 6, 2025
Monitored since: June 20, 2024
6 Observations
0 Issues

St Joseph Creek: St Joseph Creek Downers Grove

Downers Grove, Illinois, United States

Waterbody Type:
Unknown
Last observed: March 5, 2025
Monitored since: October 25, 2024
7 Observations
0 Issues

River Thames: Riverbank Apartments

Staines, Surrey, United Kingdom

Waterbody Type:
Wetland
Last observed: March 5, 2025
Monitored since: March 5, 2025
1 Observations
0 Issues

Fox River in McHenry IL: Fox River at Route 120 bridge in McHenry

Mchenry, Illinois, United States

Waterbody Type:
River
Last observed: March 4, 2025
Monitored since: November 25, 2024
5 Observations
0 Issues

Dollis Brook: Brent Cross

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: March 4, 2025
Monitored since: February 19, 2025
2 Observations
0 Issues