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?

8,229 locations

+40 new sample locations added in the past 30 days

Van Gorder Creek: Where it empties into Pelly

Yukon, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: May 26, 2019

River Wey: Farncombe boat house

Farncombe, Surrey, United Kingdom

Waterbody Type:
River
Last observed: July 27, 2025
Monitored since: June 25, 2023

Creek ? to right of Clearville boat ramp Lake Erie( directly behind pavillion in the centre walk straight to tree at creek): Clear Creek

Ontario, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: May 28, 2023

Mundy Lake: Mundy Park

Coquitlam, British Columbia, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: May 28, 2023

Lake Ontario: Small's Creek

Toronto, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: September 15, 2024

Port Glascow (creek just down hill to right of marina on Grey line: 16 mile creek

Ontario, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: May 28, 2023

Blind Creek : Blind Creek Bridge

Yukon, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: June 30, 2019

Upper French River : Back Channel (north of Elliot Island)

Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 27, 2025
Monitored since: July 1, 2024

Jamésie: Lac Madeleine

Quebec, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: July 8, 2023

Lake Nipissing: Campbell’s Bay

Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 27, 2025
Monitored since: July 1, 2024

Upper French River : Main Channel Marker (near Keystone / Torrance Isle)

Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 27, 2025
Monitored since: July 1, 2024

Lac Decarifel: Decarifel

Quebec, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: May 30, 2021

River Wey : River Wey, Upstream of Bowers Lock

Burpham, Surrey, United Kingdom

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

Big Rideau Lake: Len's Cove Marina, Portland, on the Big Rideau

Portland, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: June 9, 2005

Big Rideau Lake : Portland Municipal Beach

Portland, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: July 21, 2021

Mill Bourne: Philpott Lane, Mill Bourne

Woking, England, United Kingdom

Waterbody Type:
Stream
Last observed: July 27, 2025
Monitored since: July 27, 2025

Upper French River : Brandon Island

Ontario, Canada

Waterbody Type:
River
Last observed: July 27, 2025
Monitored since: July 28, 2024

Big Rideau Lake: Portland, Bayview Marina at Big Rideau Lake

Portland, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: June 9, 2005

Twelve Mile Creek: Upper Decew Falls

Thorold, Ontario, Canada

Waterbody Type:
Creek
Last observed: July 27, 2025
Monitored since: January 2, 2025

Upper French River : Satchel’s Bay

Ontario, Canada

Waterbody Type:
Unknown
Last observed: July 27, 2025
Monitored since: June 30, 2024

Big Rideau Lake: Ironwoods Bay

Portland, Ontario, Canada

Waterbody Type:
Lake
Last observed: July 27, 2025
Monitored since: June 3, 2018