/0.016257,51.621835,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Newgate Street
The Ching, Buckhurst Hill
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965 Datapoints
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97 Observations
- Monitored since: 19 July 2024
- Last observation on: 06 September 2026
- Data collector: Martin Curry
Latest water quality data added
693,892 datapoints at 9,470 locations
+768 new locations added in the last 30 days
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View trends at this location
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/0.019402,51.625457,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationD/S Whitehall Rd
The Ching, Buckhurst Hill
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994 Datapoints
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99 Observations
- Monitored since: 19 July 2024
- Last observation on: 06 September 2026
- Data collector: Martin Curry
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/0.019922,51.626392,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfalls
The Ching, Buckhurst Hill
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1,000 Datapoints
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98 Observations
- Monitored since: 19 July 2024
- Last observation on: 06 September 2026
- Data collector: Martin Curry
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/-0.321028,51.490015,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDuckweir - Clitheroe Island - Boston Manor Park
River Brent, London
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379 Datapoints
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22 Observations
- Monitored since: 01 October 2024
- Last observation on: 06 September 2026
- Data collector: Mitch Goldman
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/-0.34137,51.50289,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBrent_41 Union Canal Towpath
Brent River, London
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337 Datapoints
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19 Observations
- Monitored since: 01 February 2025
- Last observation on: 06 September 2026
- Data collector: Mitch Goldman
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/0.019638,51.626279,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfall 5b
River Ching, Buckhurst Hill
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841 Datapoints
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67 Observations
- Monitored since: 14 March 2025
- Last observation on: 06 September 2026
- Data collector: Harrison Tremain
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View trends at this location
Whitehall Outfall 5a
River Ching, Buckhurst Hill
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874 Datapoints
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67 Observations
- Monitored since: 14 March 2025
- Last observation on: 06 September 2026
- Data collector: Harrison Tremain
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/-0.260732,51.357527,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDownstream Stepping Stones
Hogsmill, Epsom
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488 Datapoints
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26 Observations
- Monitored since: 22 June 2024
- Last observation on: 06 September 2026
- Data collector: Georgina Fauconier
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/-0.257835,51.356304,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGreen Lanes A (downstream of old green lanes stream)
Hogsmill, Epsom
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457 Datapoints
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24 Observations
- Monitored since: 22 November 2024
- Last observation on: 06 September 2026
- Data collector: Georgina Fauconier
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/-82.977412,42.006707,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSeymour Beach
Lake Erie, Harrow
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819 Datapoints
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24 Observations
- Monitored since: 22 November 2025
- Last observation on: 06 September 2026
- Data collector: Rodd Armstrong
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/-79.874511,43.272062,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBayfront Park Beach
Hamilton Harbour, Hamilton
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314 Datapoints
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14 Observations
- Monitored since: 25 May 2025
- Last observation on: 06 September 2026
- Data collector: Celina Elliott
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/-75.684261,44.586496,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHardy Park Boat Launch
St Lawrence River, Brockville
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283 Datapoints
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13 Observations
- Monitored since: 12 June 2026
- Last observation on: 05 September 2026
- Data collector: Emily Harwood
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/-75.80597,44.503463,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTI parkway bridge
Jones Creek, Mallorytown
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26 Datapoints
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1 Observations
- Monitored since: 05 September 2026
- Last observation on: 05 September 2026
- Data collector: Christine Grossutti
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/-76.184921,45.045818,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationEbbs Bay
Mississippi lake, Carleton Place
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234 Datapoints
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18 Observations
- Monitored since: 27 June 2025
- Last observation on: 05 September 2026
- Data collector: Lise Boulay
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/-76.177918,45.033856,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBlack Bass Bay
Mississippi Lake, Perth
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174 Datapoints
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11 Observations
- Monitored since: 27 June 2026
- Last observation on: 05 September 2026
- Data collector: Jane Smith
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/-79.984932,48.163567,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationEast of Kirkland Lake at Roadside Park
Gull Lake, King Kirkland
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177 Datapoints
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21 Observations
- Monitored since: 04 July 2017
- Last observation on: 05 September 2026
- Data collector: Don Ross
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/-79.071436,43.066787,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDufferin Islands Nature Area
Niagara River, Niagara Falls
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357 Datapoints
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15 Observations
- Monitored since: 30 December 2024
- Last observation on: 05 September 2026
- Data collector: Hasmita Patel
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/-79.768338,48.106084,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationUnder the Bridge on S Side of Hwy 66 at Misena River
Misena River, Dobie
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207 Datapoints
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19 Observations
- Monitored since: 26 July 2019
- Last observation on: 05 September 2026
- Data collector: Don Ross
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/-0.449957,51.574152,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOak Farm (U43)
River Pinn, Uxbridge
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32 Datapoints
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2 Observations
- Monitored since: 28 July 2026
- Last observation on: 05 September 2026
- Data collector: Tessa Kershaw
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/-79.387323,44.918907,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSite 9
Lake Muskoka, Gravenhurst
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279 Datapoints
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23 Observations
- Monitored since: 18 July 2025
- Last observation on: 05 September 2026
- Data collector: Robert Haag
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