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

+52 new sample locations added in the past 30 days

West Branch DuPage River: West Branch DuPage River at Naperville Riverwalk

Naperville, Illinois, United States

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: November 30, 2023
10 Observations
0 Issues

Crystal Creek: Main Street

Algonquin, Illinois, United States

Waterbody Type:
Creek
Last observed: April 16, 2025
Monitored since: November 25, 2024
8 Observations
0 Issues

Fox River: Dam 62

Algonquin, Illinois, United States

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: November 25, 2024
8 Observations
0 Issues

East branch DuPage River: East DuPage river at St. Charles

Glen Ellyn, Illinois, United States

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: November 15, 2023
13 Observations
0 Issues

St. Lawrence River: Rotary Creek

Ontario, Canada

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: July 8, 2019
37 Observations
0 Issues

Plum Creek at Klemme Rd: Plum Creek at Klemme

Crete, Illinois, United States

Waterbody Type:
Creek
Last observed: April 16, 2025
Monitored since: December 10, 2023
12 Observations
0 Issues

Folly Brook/Dollis Brook: Darlands Lake (Downstream)

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: May 21, 2023
24 Observations
0 Issues

Folly Brook/Dollis Brook: Darlands Lake (Upstream)

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: May 21, 2023
25 Observations
0 Issues

Seville River: Near the city center

Seville, Sevilla, Spain

Waterbody Type:
River
Last observed: April 16, 2025
Monitored since: September 9, 2016
5 Observations
0 Issues

Culp Ln. pond: Culp Ln. pond

Bethalto, Illinois, United States

Waterbody Type:
Pond
Last observed: April 15, 2025
Monitored since: November 15, 2023
4 Observations
0 Issues

Salt Creek: Salt Creek - Fullersburg - Rainbow Bridge

Oak Brook, Illinois, United States

Waterbody Type:
Creek
Last observed: April 15, 2025
Monitored since: November 25, 2023
13 Observations
0 Issues

DesPlaines River: DesPlaines River from DesPlaines Riverways DuPage FPD

Hinsdale, Illinois, United States

Waterbody Type:
River
Last observed: April 15, 2025
Monitored since: November 25, 2023
13 Observations
0 Issues

Ferson Creek: Ferson Creek at LeRoy Oakes FP Bridge

Saint Charles, Illinois, United States

Waterbody Type:
Creek
Last observed: April 15, 2025
Monitored since: November 8, 2023
13 Observations
0 Issues

Oxleas Meadow Site 2 : Oxleas Meadow 2

London, Greenwich, United Kingdom

Waterbody Type:
Creek
Last observed: April 15, 2025
Monitored since: April 25, 2024
4 Observations
0 Issues

East Wickham: Woodlands farm, Oxleas and Bellegrove road stream

London, Bexley, United Kingdom

Waterbody Type:
River
Last observed: April 15, 2025
Monitored since: March 9, 2025
2 Observations
0 Issues

East wickham: Woodlands farm, golf course land drain

London, Greenwich, United Kingdom

Waterbody Type:
River
Last observed: April 15, 2025
Monitored since: March 9, 2025
2 Observations
0 Issues

East Wickham: Woodlands farm, shooters hill stream

London, Greenwich, United Kingdom

Waterbody Type:
River
Last observed: April 15, 2025
Monitored since: March 9, 2025
2 Observations
0 Issues

Waubonsie Creek: Waubonsie Creek

Oswego, Illinois, United States

Waterbody Type:
Creek
Last observed: April 14, 2025
Monitored since: November 30, 2023
13 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: April 14, 2025
Monitored since: November 25, 2024
6 Observations
0 Issues

Morgan Creek: Morgan Creek at Morgan Creek Park

Oswego, Illinois, United States

Waterbody Type:
Creek
Last observed: April 14, 2025
Monitored since: November 30, 2023
13 Observations
0 Issues

Blackberry Creek at Pouley Rd.: Blackberry Creek

Elburn, Illinois, United States

Waterbody Type:
Creek
Last observed: April 14, 2025
Monitored since: November 15, 2024
6 Observations
0 Issues