organization

Thames21

Dataset summary

Sample locations

Contributing from 1 March 2020 → 24 October 2026

Displaying locations 101 - 120 of 396 in total

Lea Guardians
14 observations Jun 11 2025 → Sep 20 2026
22 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, oxygen, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

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Marsh Dykes & Thamesmead Water Quality Group
9 observations Jul 18 2025 → Sep 20 2026
20 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

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Maidenhead to Teddington Water Quality Group
3 observations May 06 2026 → Sep 20 2026
15 parameters tested ▾

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water use

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Maidenhead to Teddington Water Quality Group
4 observations May 06 2026 → Sep 20 2026
15 parameters tested ▾

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water use

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Brent Catchment Water Quality Working Group
24 observations Nov 07 2024 → Sep 19 2026
22 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water flow, water level, water temperature, water use

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Brent Catchment Water Quality Working Group
24 observations Nov 07 2024 → Sep 19 2026
22 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water flow, water level, water temperature, water use

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Lea Guardians
26 observations Apr 20 2024 → Sep 18 2026
20 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature

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Brent Catchment Water Quality Working Group
22 observations Nov 07 2024 → Sep 18 2026
21 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

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Marsh Dykes & Thamesmead Water Quality Group
16 observations May 29 2025 → Sep 17 2026
11 parameters tested ▾

ammonia, conductivity, flow, ph, phosphate, total dissolved solids (tds), turbidity, water depth, water flow, water level, water temperature

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Lea Guardians
11 observations Oct 25 2025 → Sep 15 2026
19 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature, water use

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Lea Guardians
5 observations Oct 25 2025 → Sep 15 2026
18 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature, water use

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Lea Guardians
16 observations Feb 01 2025 → Sep 15 2026
16 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature

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Lea Guardians
6 observations Oct 02 2024 → Sep 14 2026
17 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature

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Ravensbourne Catchment Improvement Group's Water Quality Working Group
8 observations Oct 04 2025 → Sep 13 2026
19 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature, water use

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Ravensbourne Catchment Improvement Group's Water Quality Working Group
8 observations Oct 04 2025 → Sep 13 2026
19 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature, water use

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Ravensbourne Catchment Improvement Group's Water Quality Working Group
7 observations Mar 02 2026 → Sep 13 2026
19 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature

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Ravensbourne Catchment Improvement Group's Water Quality Working Group
37 observations Jul 08 2023 → Sep 11 2026
20 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

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Brent Catchment Water Quality Working Group
16 observations Feb 18 2025 → Sep 09 2026
21 parameters tested ▾

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water flow, water level, water temperature

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Lea Guardians
92 observations Jul 30 2023 → Sep 09 2026
8 parameters tested ▾

algae, ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

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Roding Beam and Ingrebourne
12 observations Sep 27 2025 → Aug 31 2026
7 parameters tested ▾

ammonia, conductivity, current precipitation, phosphate, recent precipitation, turbidity, water temperature

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