/-0.2578354,51.3563039,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Hogsmill: Green Lanes A (downstream of old green lanes stream)
Epsom, Surrey, United Kingdom
Waterbody Type:River
Last observed: April 12, 2025 Monitored since: November 22, 2024
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?
7,912 locations
+52 new sample locations added in the past 30 days
River
Last observed: April 12, 2025 Monitored since: November 22, 2024
/-88.7167454,42.0883946,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Kishwaukee River South Branch: Kishwaukee River South Branch at Russell Woods
Genoa, Illinois, United States
Waterbody Type:River
Last observed: April 12, 2025 Monitored since: December 15, 2024
/-88.1645966,41.543694,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Rock Run Creek: Rock Run Creek
Joliet, Illinois, United States
Waterbody Type:Stream
Last observed: April 11, 2025 Monitored since: November 12, 2023
/-88.160541,41.6971093,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
DuPage River: Springbrook Water Reclamation Center Upstream
Bolingbrook, Illinois, United States
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: November 15, 2023
/-88.0365368,41.883241,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
East Branch DuPage River: Hill Ave Bridge
Lombard, Illinois, United States
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: November 17, 2023
/-88.0276327,41.7943364,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
St Joseph Creek: St Joseph Creek Downers Grove
Downers Grove, Illinois, United States
Waterbody Type:Unknown
Last observed: April 11, 2025 Monitored since: October 25, 2024
/-89.3628179,31.3511873,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lake Sehoy: MPI Lake Training
Hattiesburg, Mississippi, United States
Waterbody Type:Lake
Last observed: April 11, 2025 Monitored since: April 11, 2025
/-88.1283331,41.6797393,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lily Cache Creek: Lily Cache Creek at the Lily Cache Sports Field footbridge
Bolingbrook, Illinois, United States
Waterbody Type:Creek
Last observed: April 11, 2025 Monitored since: November 22, 2024
/-0.2445809,51.4713932,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Beverley Brook: Barnes Common Riverfly site
London, Richmond upon Thames, United Kingdom
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: December 13, 2024
/-0.4645792,51.3395269,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: River Wey near Plough Bridge, Byfleet
Byfleet, Surrey, United Kingdom
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: May 29, 2023
/-0.2740788,51.370674,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
/-0.751399,51.183525,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Tilford South Bridge WEST SIDE
Tilford, Surrey, United Kingdom
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: May 17, 2024
/-0.5769213,51.22508,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: St Catherines swimming spot
Guildford, Surrey, United Kingdom
Waterbody Type:River
Last observed: April 11, 2025 Monitored since: October 15, 2021
/-122.7271322,49.2814134,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
DeBoville Slough : Devon
Coquitlam, British Columbia, Canada
Waterbody Type:Wetland
Last observed: April 10, 2025 Monitored since: November 9, 2022
/-88.1149435,41.8776296,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Winfield Creek,: West bridge, Winfield Creek, Northside Park
Wheaton, Illinois, United States
Waterbody Type:Creek
Last observed: April 10, 2025 Monitored since: November 21, 2024
/-89.9684572,32.3896015,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Pelahatchie Bay: Pelahatchie Creek
Brandon, Mississippi, United States
Waterbody Type:Bay
Last observed: April 10, 2025 Monitored since: April 27, 2018
/-74.731841,45.0181517,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
St Lawrence River: St Lawrence River
Ontario, Canada
Waterbody Type:Unknown
Last observed: April 10, 2025 Monitored since: April 10, 2025
/-0.2759457,51.3972622,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Hogsmill: Berrylands Bridge
London, Kingston upon Thames, United Kingdom
Waterbody Type:River
Last observed: April 10, 2025 Monitored since: June 20, 2024
/-0.2973819,51.405093,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Hogsmill: Middle Mill
London, Kingston upon Thames, United Kingdom
Waterbody Type:River
Last observed: April 10, 2025 Monitored since: June 21, 2024
/-89.7368431,30.3817238,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
West Pearl: Hwy 59
Pearl River, Louisiana, United States
Waterbody Type:River
Last observed: April 9, 2025 Monitored since: May 2, 2021
/-0.1898789,51.6175502,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Folly Brook: Folly pre confluence
London, Barnet, United Kingdom
Waterbody Type:River
Last observed: April 9, 2025 Monitored since: February 5, 2025