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?

8,238 locations

+8 new sample locations added in the past 30 days

River Wey: Near Prince of Wales Pub

Hampshire, United Kingdom

Waterbody Type:
River
Last observed: July 27, 2025
Monitored since: March 19, 2023

Thessalon River: Rydal Bank

Ontario, Canada

Waterbody Type:
River
Last observed: July 27, 2025
Monitored since: June 28, 2023

Rouge River: Rouge River at Fairview Vista Park

Scarborough, Ontario, Canada

Waterbody Type:
River
Last observed: July 27, 2025
Monitored since: October 6, 2024

Lac: Lac des soeurs

Quebec, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: June 29, 2020

At. Lawrence River - Lake St. Lawrence : Guindon Boat Launch Bay

Long Sault, Ontario, Canada

Waterbody Type:
Bay
Last observed: July 26, 2025
Monitored since: June 22, 2025

Lac Blouin: Lac Blouin

Val D'Or, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: June 15, 2020

River: Rouge River

Markham, Ontario, Canada

Waterbody Type:
River
Last observed: July 26, 2025
Monitored since: October 7, 2024

creek: MA101

Markham, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 26, 2025
Monitored since: September 7, 2024

St Lawrence River: Tree Haven Canal

Ontario, Canada

Waterbody Type:
River
Last observed: July 26, 2025
Monitored since: June 25, 2022

St Lawrence: Lakeview ... bay

Ontario, Canada

Waterbody Type:
River
Last observed: July 26, 2025
Monitored since: May 28, 2023

Raisin River: Raisin River Marina

Ontario, Canada

Waterbody Type:
River
Last observed: July 26, 2025
Monitored since: March 30, 2024

Round Lake: Home Shore

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: October 27, 2024

Round lake: Dock testing

Saskatchewan, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: May 28, 2022

Lievre River: Lievre River Buckingham

Gatineau, Quebec, Canada

Waterbody Type:
Unknown
Last observed: July 26, 2025
Monitored since: July 26, 2025

Lac Valérie: Lac Valérie

Quebec, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: June 22, 2025

Lac Réna: Lac Réna

Saint Félix D'Otis, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: June 28, 2025

Cranleigh Waters: Cranleigh Waters Stream

Cranleigh, England, United Kingdom

Waterbody Type:
Stream
Last observed: July 26, 2025
Monitored since: June 30, 2025

River Bourne: Cabrera Riverside Walk

Virginia Water, Surrey, United Kingdom

Waterbody Type:
Stream
Last observed: July 26, 2025
Monitored since: December 29, 2024

Tame: Elford

Tamworth, England, United Kingdom

Waterbody Type:
Unknown
Last observed: July 26, 2025
Monitored since: July 26, 2025

Lac Otis: Lac Otis

Saint Félix D'Otis, Quebec, Canada

Waterbody Type:
Lake
Last observed: July 26, 2025
Monitored since: June 28, 2025

Twenty Mile Creek: Smithville Nature Path

Smithville, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 26, 2025
Monitored since: May 24, 2025