Dataset

Hogsmill Water Quality

Dataset summary

Observations

11 July 2025

Bonesgate

20 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water depth, water flow, water level, water temperature

10 July 2025

Berrylands Bridge

14 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, oxygen, ph, phosphate, water depth, water temperature

10 July 2025

Ewell Storm Tank

19 parameters tested

air temperature, alkalinity, ammonia, chlorine, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water depth, water flow, water level, water temperature

8 July 2025

Saipem S2- Middle Mill

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water depth, water temperature

24 June 2025

Middle Mill

19 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, ph, weather in the past 24hrs, water depth, water flow, water level, water temperature

14 June 2025

Bonegate Stream

19 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, weather in the past 24hrs, water depth, water flow, water level, water temperature

14 June 2025

Downstream Stepping Stones

20 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water depth, water flow, water level, water temperature

14 June 2025

Green Lanes A (downstream of old green lanes stream)

20 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water depth, water flow, water level, water temperature

13 June 2025

Ewell Storm Tank

19 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, water depth, water flow, water level, water temperature

13 June 2025

Bonesgate

18 parameters tested

alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water flow, water level, water temperature

12 June 2025

Berrylands Bridge

14 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, oxygen, ph, phosphate, water depth, water temperature

11 June 2025

Saipem S1 - Kingston Chamber of Commerce

21 parameters tested

air temperature, algae, ammonia, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, odour, water surface, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water depth, water flow, water level, water temperature

4 June 2025

Saipem S2- Middle Mill

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water depth, water temperature

4 June 2025

Saipem S1 - Kingston Chamber of Commerce

14 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water depth, water temperature

29 May 2025

Saipem S3 - Chapel Mill Road

14 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, ph, phosphate, weather in the past 24hrs, water depth, water temperature

28 May 2025

Saipem S5 - Tolworth Brook

22 parameters tested

air temperature, algae, alkalinity, ammonia, chloride, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, nitrites, odour, water surface, ph, weather in the past 24hrs, secchi depth (clarity), water depth, water flow, water level, water temperature

22 May 2025

Middle Mill

19 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, ph, weather in the past 24hrs, water depth, water flow, water level, water temperature

22 May 2025

Saipem S4 - Berrylands playground

13 parameters tested

air temperature, alkalinity, chlorine, conductivity, current weather, current weather description, hardness, ph, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), water depth, water temperature

10 May 2025

Saipem S5 - Tolworth Brook

20 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, ph, pollution sources, weather in the past 24hrs, water depth, water flow, water level, water temperature

9 May 2025

Bonesgate

19 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather description, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, water flow, water level, water temperature