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

Footbridge beside Waterworks Centre into Waterworks Nature Reserve: River Lea Flood Relief Channel

London, Waltham Forest, United Kingdom

Waterbody Type:
River
Last observed: June 8, 2025
Monitored since: June 8, 2025

Coppermill Stream: Bridge by Springfield Marina

London, Waltham Forest, United Kingdom

Waterbody Type:
River
Last observed: June 8, 2025
Monitored since: June 8, 2025

Slade Pond: Slade Pond Inlet

London, Greenwich, United Kingdom

Waterbody Type:
Pond
Last observed: June 8, 2025
Monitored since: April 25, 2024

Slade Pond: Slade Pond Outfall

London, Greenwich, United Kingdom

Waterbody Type:
Pond
Last observed: June 8, 2025
Monitored since: April 25, 2024

Salmons Brook/Houndsden Gutter/Grovelands Stream: Grovelands Park Lake Outfall by cafe and dam

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: June 8, 2025
Monitored since: April 23, 2023

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

London, Enfield, United Kingdom

Waterbody Type:
Stream
Last observed: June 8, 2025
Monitored since: July 30, 2023

Stream in Maryon Wilson Park: Maryon Wilson Park

London, Greenwich, United Kingdom

Waterbody Type:
Stream
Last observed: June 8, 2025
Monitored since: April 25, 2024

Lake Ontario: Credit River

Mississauga, Ontario, Canada

Waterbody Type:
Unknown
Last observed: June 8, 2025
Monitored since: June 8, 2025

Nippersink Creek: Nippersink Creek @ Rte 12 (west of State Park Rd intersection)

Spring Grove, Illinois, United States

Waterbody Type:
Creek
Last observed: June 7, 2025
Monitored since: November 30, 2024

Five Fingers: A28-6 : Rang 16 sud

New Brunswick, Canada

Waterbody Type:
Stream
Last observed: June 7, 2025
Monitored since: July 2, 2024

Lac à la balle : Lac à la balle

Saint Félix D'Otis, Quebec, Canada

Waterbody Type:
Lake
Last observed: June 7, 2025
Monitored since: June 7, 2025

Cootes Paradise: RBG Hydro One Site

Burlington, Ontario, Canada

Waterbody Type:
Wetland
Last observed: June 7, 2025
Monitored since: October 31, 2020

River Brent Ealing Golf Course: River Brent by 18th tee

London, Ealing, United Kingdom

Waterbody Type:
River
Last observed: June 6, 2025
Monitored since: September 19, 2024

River Brent Ealing Golf Course: River Brent west side of bridge to clubhouse

London, Ealing, United Kingdom

Waterbody Type:
River
Last observed: June 6, 2025
Monitored since: September 19, 2024

Tillingbourne Stream : Raikes Lane Abinger Hammer

Gomshall, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: June 6, 2025
Monitored since: March 18, 2023

St. Lawrence River: South Lancaster Wharf

Ontario, Canada

Waterbody Type:
River
Last observed: June 5, 2025
Monitored since: August 4, 2022

Desisle River: Dalhousie Mills

Ontario, Canada

Waterbody Type:
Unknown
Last observed: June 5, 2025
Monitored since: September 19, 2023

Lake: Alexandria Park

Ontario, Canada

Waterbody Type:
Lake
Last observed: June 5, 2025
Monitored since: April 1, 2024

Romina Pond: Romina Pond

Vaughan, Ontario, Canada

Waterbody Type:
Pond
Last observed: June 5, 2025
Monitored since: June 5, 2025

Falgarwood Creek: FAL PS Creek Bed

Oakville, Ontario, Canada

Waterbody Type:
Creek
Last observed: June 5, 2025
Monitored since: May 16, 2025

Hickory Creek in Hickory Creek Forest Preserve, Will County: Hickory Creek in Hickory Creek Forest Preserve, Will County

Frankfort, Illinois, United States

Waterbody Type:
Creek
Last observed: June 3, 2025
Monitored since: December 13, 2023