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?

7,912 locations

+51 new sample locations added in the past 30 days

Welland Canal: Port Colborne at the entrance from Lake Erie

Port Colborne, Ontario, Canada

Waterbody Type:
Canal
Last observed: March 31, 2025
Monitored since: December 3, 2021
8 Observations
0 Issues

Winfield Creek: Winfield Creek at Emerson School

Wheaton, Illinois, United States

Waterbody Type:
Creek
Last observed: March 31, 2025
Monitored since: December 6, 2023
13 Observations
0 Issues

Pond: DuPage River Park - Small Pond - Site 2

Naperville, Illinois, United States

Waterbody Type:
Pond
Last observed: March 31, 2025
Monitored since: November 30, 2024
5 Observations
0 Issues

River Bourne: Cabrera Riverside Walk

Virginia Water, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: December 29, 2024
4 Observations
0 Issues

Dagenham Brook: Downstream of Leyton Jubilee Park's double outfall (what3words: ///curving.cups.brings)

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: April 6, 2024
9 Observations
0 Issues

Dagenham Brook: Upstream of Leyton Jubilee Park's double outfall (what3words: ///curving.cups.brings)

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: April 6, 2024
9 Observations
0 Issues

Landings Wood Stream: Landings Wood Stream

Farncombe, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: July 31, 2023
18 Observations
0 Issues

River Wey: Garden at 42 Sturt Road

Haslemere, West Sussex, United Kingdom

Waterbody Type:
River
Last observed: March 31, 2025
Monitored since: September 24, 2023
6 Observations
1 Issues

Dagenham Brook : Dagenham Brook U/S

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: September 1, 2024
5 Observations
0 Issues

Dagenham Brook : Dagenham Brook D/S

London, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: September 1, 2024
6 Observations
0 Issues

Unstead Inlet: From Godalming Treatment Works

Godalming, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: July 20, 2023
21 Observations
0 Issues

Thornhurst Brook: Thornhurst Brook at Vachery

Cranleigh, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: November 27, 2023
13 Observations
0 Issues

Unstead Wetland Reserve: Unstead Exit (outflow)

Bramley, Surrey, United Kingdom

Waterbody Type:
Wetland
Last observed: March 31, 2025
Monitored since: July 20, 2023
22 Observations
0 Issues

River Way: River Way

Woking, Surrey, United Kingdom

Waterbody Type:
River
Last observed: March 31, 2025
Monitored since: March 31, 2025
1 Observations
0 Issues

Gledhow Beck: Allerton Park CSO - above

Leeds, Leeds, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: September 24, 2023
19 Observations
0 Issues

Cranleigh Waters: Redcroft Walk / Horsham Road

Cranleigh, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: March 31, 2025
Monitored since: November 25, 2023
12 Observations
0 Issues

Gledhow Lake: E-coli Testing Location 1 (UoL)

Leeds, Leeds, United Kingdom

Waterbody Type:
Lake
Last observed: March 31, 2025
Monitored since: September 25, 2023
11 Observations
0 Issues

Chicago River: Riverbank Neighbors - Berteau

Chicago, Illinois, United States

Waterbody Type:
River
Last observed: March 31, 2025
Monitored since: November 18, 2024
5 Observations
0 Issues

Niagara River: Dufferin Islands Nature Area

Ontario, Canada

Waterbody Type:
River
Last observed: March 30, 2025
Monitored since: December 30, 2024
4 Observations
0 Issues

Lake St. Clair: Windsor

Tecumseh, Ontario, Canada

Waterbody Type:
Lake
Last observed: March 30, 2025
Monitored since: July 7, 2020
30 Observations
0 Issues

Box Lake: Box Lake Dock

British Columbia, Canada

Waterbody Type:
Lake
Last observed: March 30, 2025
Monitored since: August 26, 2022
21 Observations
0 Issues