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?

8,226 locations

+33 new sample locations added in the past 30 days

Adolphus Reach on Lake Ontario: Prinyer’s Cove Park & Boat Launch

Ontario, Canada

Waterbody Type:
Lake
Last observed: April 13, 2025
Monitored since: September 25, 2020
31 Observations
0 Issues

Prinyer’s Cove on Lake Ontario: Prinyer’s Cove Source

Ontario, Canada

Waterbody Type:
Lake
Last observed: April 13, 2025
Monitored since: August 10, 2021
25 Observations
0 Issues

Mill Pond: Mill Pond

Milton, Ontario, Canada

Waterbody Type:
Pond
Last observed: April 12, 2025
Monitored since: April 12, 2025
1 Observations
0 Issues

East Branch of the DuPage River: East Branch DuPage River at Churchill Woods

Lombard, Illinois, United States

Waterbody Type:
River
Last observed: April 12, 2025
Monitored since: January 29, 2024
7 Observations
0 Issues

Lake Sehoy: MPI Lake Training

Hattiesburg, Mississippi, United States

Waterbody Type:
Lake
Last observed: April 11, 2025
Monitored since: April 11, 2025
1 Observations
0 Issues

St Lawrence River: St Lawrence River

Ontario, Canada

Waterbody Type:
Unknown
Last observed: April 10, 2025
Monitored since: April 10, 2025
1 Observations
0 Issues

West Pearl: Hwy 59

Pearl River, Louisiana, United States

Waterbody Type:
River
Last observed: April 9, 2025
Monitored since: May 2, 2021
9 Observations
0 Issues

Rivière Richelieu: Centre-de-Plein-air-Ronald-Beauregard

Montreal, Quebec, Canada

Waterbody Type:
River
Last observed: April 9, 2025
Monitored since: July 26, 2024
3 Observations
0 Issues

Bay of Quinte: Bay of Quinte Aikins Rd.

Rednersville, Ontario, Canada

Waterbody Type:
Unknown
Last observed: April 8, 2025
Monitored since: April 17, 2023
8 Observations
0 Issues

Glen Abbey Golf Course Stream 1: Glen Abbey Golf Course Stream 1

Oakville, Ontario, Canada

Waterbody Type:
Stream
Last observed: April 7, 2025
Monitored since: April 7, 2025
1 Observations
0 Issues

North Branch Chicago River at Eugene Field Park Footbridge: Eugene Field Park

Chicago, Illinois, United States

Waterbody Type:
River
Last observed: April 6, 2025
Monitored since: December 15, 2024
4 Observations
0 Issues

Spring Brook Creek: Spring Brook Creek

Wheaton, Illinois, United States

Waterbody Type:
Creek
Last observed: April 6, 2025
Monitored since: December 8, 2024
5 Observations
0 Issues

Lake Ontario: Little Bluff Conservation Area

Ontario, Canada

Waterbody Type:
Lake
Last observed: April 6, 2025
Monitored since: April 16, 2017
55 Observations
1 Issues

Gartside Creek: Gartside Creek at Queen of Peace

Belleville, Illinois, United States

Waterbody Type:
Creek
Last observed: April 5, 2025
Monitored since: October 21, 2023
19 Observations
0 Issues

Moore Brook : Firs Farm Wetlands - Outlet

London, Enfield, United Kingdom

Waterbody Type:
Wetland
Last observed: April 5, 2025
Monitored since: April 5, 2025
1 Observations
0 Issues

Richland Creek: Richland Creek @ South Side City Park

Belleville, Illinois, United States

Waterbody Type:
Creek
Last observed: April 3, 2025
Monitored since: February 9, 2023
34 Observations
0 Issues

Bayside Quarry east Pond: Bayside Quarry east Pond

Rednersville, Ontario, Canada

Waterbody Type:
Pond
Last observed: April 3, 2025
Monitored since: April 6, 2022
11 Observations
0 Issues

Chicago River: River Park Boathouse

Chicago, Illinois, United States

Waterbody Type:
River
Last observed: April 3, 2025
Monitored since: January 2, 2023
40 Observations
0 Issues

Burnt Oak Brook: Lyndhurst Park (downstream of culvert)

London, Barnet, United Kingdom

Waterbody Type:
Stream
Last observed: April 3, 2025
Monitored since: February 2, 2024
12 Observations
0 Issues

Burnt Oak Brook: Simmonds Mead Open Space

London, Barnet, United Kingdom

Waterbody Type:
Stream
Last observed: April 3, 2025
Monitored since: February 1, 2024
10 Observations
0 Issues

Pond at Creek Bend Nature Center: Creek Bend Pond

Saint Charles, Illinois, United States

Waterbody Type:
Pond
Last observed: April 3, 2025
Monitored since: November 7, 2023
13 Observations
0 Issues