/-0.498805,51.1401646,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Cranleigh Waters: Knowle Park Lower
Cranleigh, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: November 26, 2023
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?
8,239 locations
+0 new sample locations added in the past 30 days
River
Last observed: July 26, 2025 Monitored since: November 26, 2023
/-70.625267,48.2207842,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lac Brébeuf: Lac Brébeuf
Saint Félix D'Otis, Quebec, Canada
Waterbody Type:Unknown
Last observed: July 26, 2025 Monitored since: July 26, 2025
/-76.2632,44.719,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Big Rideau Lake: Big Rideau Lake off of Big Rideau Shore N
Ontario, Canada
Waterbody Type:Lake
Last observed: July 26, 2025 Monitored since: June 9, 2005
/-76.2835,44.706,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Big Rideau Lake: Narrows, Red Buoy
Ontario, Canada
Waterbody Type:Lake
Last observed: July 26, 2025 Monitored since: June 9, 2005
/-0.4917367,51.1386446,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Cranleigh Waters: Knowle Park
Cranleigh, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: November 26, 2023
/-0.6707553,51.2563606,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Tributary of Classford Brook, next to Normandy Pond (no link at this point): Normandy Pond Stream
Normandy, Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: June 23, 2023
/-0.4970026,51.1108229,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Cranleigh Waters: Wildwood golf course north side
Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: November 26, 2023
/-0.7907442,51.0806241,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Radford Park : Down steam sluice
Liphook, Hampshire, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: June 26, 2022
/-0.0602531,51.5811899,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Lea: Upstream of Markfield Park (Stonebridge Brook) CSO
London, Waltham Forest, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: June 29, 2024
/-0.060575,51.5811099,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Lea: Markfield Park (Stonebridge Brook) CSO
London, Haringey, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: June 29, 2024
/-0.6599621,51.253809,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Tributary of Classford Brook, Normandy: Cow field bridge
Normandy, Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: June 23, 2023
/-0.7987425,51.0825472,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Radford Park : Pooh Sticks Bridge
Liphook, Hampshire, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: June 26, 2022
/-0.6642437,51.2545292,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Tributary of Classford Brook, edge of Manor Fruit Farm, Normandy, Surrey. w3w: qualified.tickles.excavated: Tributary of Classford Brook
Normandy, Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: June 24, 2023
/-0.9834003,51.1496251,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
North Wey at Alton: Alton Flood Meadows, Downstream of footbridge
Alton, Hampshire, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: March 19, 2023
/-0.4991484,51.1061082,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Cranleigh Waters: Wildwood golf course south side
Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: November 26, 2023
/-0.5433738,51.3091211,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Hoe Stream (White Rose Lane Nature Reserve): Hoe Stream
Woking, Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: December 1, 2024
/-0.5755696,51.233191,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Island Training location, Riverside
Guildford, Surrey, United Kingdom
Waterbody Type:Unknown
Last observed: July 26, 2025 Monitored since: May 10, 2022
/-0.62356,51.2813503,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Hodge Brook: Hodge Brook at Fox Corner Nature Reserve
Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: July 29, 2023
/-0.6228089,51.2808301,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Stanford Brook/Hoe Stream: Fox Corner Nature Reserve
Surrey, United Kingdom
Waterbody Type:Stream
Last observed: July 26, 2025 Monitored since: July 29, 2023
/-0.7977974,51.2286165,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Farnham Park
Farnham, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: March 30, 2025
/-0.5789709,51.2434733,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Dapdune Wharf
Guildford, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 26, 2025 Monitored since: November 27, 2022