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?

8,226 locations

+33 new sample locations added in the past 30 days

Retention pond: 6th Street park retention pond

Wood River, Illinois, United States

Waterbody Type:
Pond
Last observed: March 9, 2025
Monitored since: November 16, 2023
4 Observations
0 Issues

Silkstream: Burnt Oak Brook in Watling Park - Burnt Oak

Edgware, England, United Kingdom

Waterbody Type:
Stream
Last observed: March 9, 2025
Monitored since: October 17, 2024
7 Observations
0 Issues

Silkstream / Burnt Oak Brook: Burnt Oak Brook in Watling Park

Edgware, England, United Kingdom

Waterbody Type:
Stream
Last observed: March 9, 2025
Monitored since: March 9, 2025
1 Observations
0 Issues

West Fork Wood River: WFWR - Downstream Harris Lane

Alton, Illinois, United States

Waterbody Type:
River
Last observed: March 9, 2025
Monitored since: February 4, 2023
7 Observations
0 Issues

St Marys River: Mulligans - St Marys River

Ontario, Canada

Waterbody Type:
River
Last observed: March 8, 2025
Monitored since: March 2, 2025
2 Observations
0 Issues

Pymmes Brook/Moore Brook/Firs Farm Wetland: Firs Farm south inlet and wetland cell (upstream)

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: March 8, 2025
Monitored since: February 8, 2025
2 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

Dollis Brook: Brent Cross

London, Barnet, United Kingdom

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

Rouge River: Rouge River at Main st Unionville

Markham, Ontario, Canada

Waterbody Type:
Creek
Last observed: March 4, 2025
Monitored since: October 6, 2024
3 Observations
0 Issues

Copper Slough: Copper Slough at Porter Park

Champaign, Illinois, United States

Waterbody Type:
Stream
Last observed: March 2, 2025
Monitored since: December 22, 2023
19 Observations
0 Issues

Pond at Briarcliff Neighborhood : Pond at Briarcliff Neighborhood Beach

Mahomet, Illinois, United States

Waterbody Type:
Pond
Last observed: March 2, 2025
Monitored since: December 22, 2023
17 Observations
0 Issues

River Wey: Old Brewery site by big pine tree

Alton, Hampshire, United Kingdom

Waterbody Type:
River
Last observed: March 2, 2025
Monitored since: January 26, 2025
2 Observations
0 Issues

North Branch of the Chicago River: Harms Woods/Glenview Woods

Glenview, Illinois, United States

Waterbody Type:
Unknown
Last observed: March 1, 2025
Monitored since: December 21, 2021
28 Observations
0 Issues

West Branch DuPage River : Thompson Riverside

Warrenville, Illinois, United States

Waterbody Type:
River
Last observed: February 28, 2025
Monitored since: December 29, 2023
8 Observations
0 Issues

Box Lake: Box Lake

British Columbia, Canada

Waterbody Type:
Unknown
Last observed: February 28, 2025
Monitored since: February 28, 2025
1 Observations
0 Issues

StJohns Brook, Priory Park, Warwick : Priory Park

Warwick, Warwickshire, United Kingdom

Waterbody Type:
Unknown
Last observed: February 28, 2025
Monitored since: February 28, 2025
1 Observations
0 Issues

River Avon: Jetty 2nd Warwick Scouts

Warwick, Warwickshire, United Kingdom

Waterbody Type:
Unknown
Last observed: February 28, 2025
Monitored since: February 28, 2025
1 Observations
0 Issues

Round lake: Fishing shack

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: February 27, 2025
Monitored since: January 28, 2024
2 Observations
0 Issues

Tyler Creek: Tyler Creek Forest Preserve

Saint Charles, Illinois, United States

Waterbody Type:
Creek
Last observed: February 27, 2025
Monitored since: December 14, 2023
3 Observations
0 Issues

Crystal Lake Outlet: Crystal Lake Outlet

Crystal Lake, Illinois, United States

Waterbody Type:
Creek
Last observed: February 26, 2025
Monitored since: December 10, 2024
4 Observations
0 Issues