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?

8,174 locations

+101 new sample locations added in the past 30 days

Unstead Wetland Reserve: Unstead Exit (outflow)

Bramley, Surrey, United Kingdom

Waterbody Type:
Wetland
Last observed: May 26, 2025
Monitored since: July 20, 2023
23 Observations
0 Issues

Lake Erie: Colchester Harbour and Beach

Harrow, Ontario, Canada

Waterbody Type:
Lake
Last observed: May 25, 2025
Monitored since: May 25, 2025
1 Observations
0 Issues

Red Horse Lake: Right side Long Point

Ontario, Canada

Waterbody Type:
Bay
Last observed: May 25, 2025
Monitored since: May 20, 2024
3 Observations
0 Issues

Stream: MA102

Markham, Ontario, Canada

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

East Fork of Poplar Creek: Ron Haimbaugh

Hoffman Estates, Illinois, United States

Waterbody Type:
Creek
Last observed: May 25, 2025
Monitored since: November 8, 2024
7 Observations
0 Issues

Bilston Creek: 3703 Happy Valley

British Columbia, Canada

Waterbody Type:
Creek
Last observed: May 25, 2025
Monitored since: February 25, 2024
6 Observations
0 Issues

North River: North River Boathouse

Baddeck, Nova Scotia, Canada

Waterbody Type:
Estuary
Last observed: May 25, 2025
Monitored since: May 25, 2025
1 Observations
0 Issues

Lake Erie: Seacliff Beach

Leamington, Ontario, Canada

Waterbody Type:
Lake
Last observed: May 25, 2025
Monitored since: May 30, 2021
7 Observations
0 Issues

DuPage River : DuPage River at Riverwalk South Covered Bridge

Naperville, Illinois, United States

Waterbody Type:
River
Last observed: May 25, 2025
Monitored since: December 14, 2023
13 Observations
0 Issues

Red Horse Lake: Left side Lost Point

Ontario, Canada

Waterbody Type:
Bay
Last observed: May 25, 2025
Monitored since: May 20, 2024
3 Observations
0 Issues

Beaverdams pond: Beaverdams Road Parkette

Niagara Falls, Ontario, Canada

Waterbody Type:
Pond
Last observed: May 25, 2025
Monitored since: May 25, 2025
1 Observations
0 Issues

Middle River: Middle River

Baddeck, Nova Scotia, Canada

Waterbody Type:
Unknown
Last observed: May 25, 2025
Monitored since: May 25, 2025
1 Observations
0 Issues

Chicago River: Chicago River North Branch Goose Island

Chicago, Illinois, United States

Waterbody Type:
River
Last observed: May 25, 2025
Monitored since: December 17, 2023
12 Observations
0 Issues

Cranleigh Waters: Cranleigh Waters Stream

Cranleigh, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: May 25, 2025
Monitored since: April 14, 2025
3 Observations
3 Issues

Beaver Creek: Beaver Creek at College Road

Niagara Falls, Ontario, Canada

Waterbody Type:
Creek
Last observed: May 25, 2025
Monitored since: December 29, 2024
8 Observations
0 Issues

Black Creek: Black Creek bridge at College Road (Upstream)

Ontario, Canada

Waterbody Type:
Creek
Last observed: May 25, 2025
Monitored since: October 29, 2024
11 Observations
0 Issues

Cranleigh Waters: Ashen Copse

Cranleigh, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: May 25, 2025
Monitored since: November 26, 2023
5 Observations
0 Issues

East Branch Poplar Creek: East Branch Poplar Creek

Streamwood, Illinois, United States

Waterbody Type:
Unknown
Last observed: May 25, 2025
Monitored since: December 20, 2023
13 Observations
0 Issues

Redhill Creek: Lower Redhill

Stoney Creek, Ontario, Canada

Waterbody Type:
Creek
Last observed: May 24, 2025
Monitored since: October 9, 2020
23 Observations
0 Issues

Redhill Creek: Upper Albion Falls

Hamilton, Ontario, Canada

Waterbody Type:
Creek
Last observed: May 24, 2025
Monitored since: October 9, 2020
42 Observations
0 Issues

Wey Navigation : Murray’s Bridge

Addlestone, Surrey, United Kingdom

Waterbody Type:
Canal
Last observed: May 24, 2025
Monitored since: December 28, 2024
6 Observations
0 Issues