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?

7,973 locations

+65 new sample locations added in the past 30 days

River Loddon: Bartons Mill

Basingstoke, Hampshire, United Kingdom

Waterbody Type:
River
Last observed: May 19, 2025
Monitored since: January 15, 2025

St. Joseph's Creek: St. Joseph's Creek @ 59th & Williams Street

Downers Grove, Illinois, United States

Waterbody Type:
Creek
Last observed: May 19, 2025
Monitored since: December 21, 2023

Round Meadow Lake in Hidden Lake Forest Preserve in DuPage County, IL: Round Meadow Lake

Glen Ellyn, Illinois, United States

Waterbody Type:
Lake
Last observed: May 19, 2025
Monitored since: December 14, 2023

Loon Lake: Loon Lake West Shore

Ontario, Canada

Waterbody Type:
Lake
Last observed: May 18, 2025
Monitored since: June 17, 2023

Lake Killarney to Silver Lake Creek (Cary, IL, 60013): Lake Killarney to Silver Lake Creek (Cary, IL, 60013)

Cary, Illinois, United States

Waterbody Type:
Creek
Last observed: May 18, 2025
Monitored since: November 20, 2024

Lake Killarney outlet dam (Cary, IL, 60013): Lake Killarney outlet dam (Cary, IL, 60013)

Cary, Illinois, United States

Waterbody Type:
Lake
Last observed: May 18, 2025
Monitored since: November 20, 2024

DuPage River, West Branch: DuPage River, West Branch

Naperville, Illinois, United States

Waterbody Type:
River
Last observed: May 18, 2025
Monitored since: November 24, 2024

West Branch of the DuPage River - Weigand Riverfront Park Canoe Launch: West Branch of the Dupage River - Weigand Riverfront Park Canoe Launch

Naperville, Illinois, United States

Waterbody Type:
River
Last observed: May 18, 2025
Monitored since: November 27, 2024

Spring Brook Creek: Spring Brook Creek - N of Meacham Grove FP

Roselle, Illinois, United States

Waterbody Type:
Creek
Last observed: May 18, 2025
Monitored since: November 16, 2023

Salmons Brook/Houndsden Gutter: Eversley Crescent Outfall (Downstream)

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: March 24, 2023

The Ching: Whitehall Plain

Buckhurst Hill, Waltham Forest, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: July 14, 2024

Salmons Brook/Houndsden Gutter/Grovelands Stream: Grovelands Park Lake Entry

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: April 23, 2023

Salmons Brook/Houndsden Gutter/Grovelands Stream: Grovelands Park Lake Downstream of reedbeds

London, Enfield, United Kingdom

Waterbody Type:
Unknown
Last observed: May 18, 2025
Monitored since: August 12, 2024

Petty's Brook: Tollhouse Meadow

Basingstoke And Deane Borough, Hampshire, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: January 17, 2025

Salmons Brook/Houndsden Gutter/Grovelands Stream: Grovelands Park Stream below dam

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: July 30, 2023

Ching Brook: Footbridge near Rangers Road

Buckhurst Hill, Essex, United Kingdom

Waterbody Type:
Stream
Last observed: May 18, 2025
Monitored since: July 14, 2024

Folly Brook/Dollis Brook: Darlands Lake (Upstream)

London, Barnet, United Kingdom

Waterbody Type:
River
Last observed: May 18, 2025
Monitored since: May 21, 2023

Woodscreek : Woodscreek Park: 3 Pipe Inlet, Ackman Rd and Golf Course Rd, Crystal Lake, Il

Crystal Lake, Illinois, United States

Waterbody Type:
Creek
Last observed: May 17, 2025
Monitored since: November 27, 2024

Duck pond: Bellevue Park duck pond

Ontario, Canada

Waterbody Type:
Pond
Last observed: May 17, 2025
Monitored since: February 22, 2024

Rouge River: Rouge River

Quebec, Canada

Waterbody Type:
River
Last observed: May 17, 2025
Monitored since: July 27, 2024

Salt Creek: Meeker Bridge

Warkworth, Ontario, Canada

Waterbody Type:
Creek
Last observed: May 17, 2025
Monitored since: May 13, 2025