Dataset

Hogsmill Water Quality

Dataset summary

Observations

15 August 2026

Downstream Stepping Stones

16 parameters tested

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

15 August 2026

Green Lanes A (downstream of old green lanes stream)

16 parameters tested

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

14 August 2026

Ewell Storm Tank

16 parameters tested

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

12 August 2026

Middle Mill

24 parameters tested

air temperature, algae, alkalinity, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrate, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water depth, water flow, water level, water temperature, water use

7 August 2026

Bonesgate

26 parameters tested

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

6 August 2026

Berrylands Bridge

28 parameters tested

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

29 July 2026

Chamber Meads Outlet

15 parameters tested

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

29 July 2026

Chamber Meads Inlet

15 parameters tested

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

29 July 2026

Bonegate Stream

25 parameters tested

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

29 July 2026

Saipem S1 - Kingston Chamber of Commerce

23 parameters tested

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

28 July 2026

Middle Mill

17 parameters tested

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

17 July 2026

Downstream Stepping Stones

20 parameters tested

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

17 July 2026

Green Lanes A (downstream of old green lanes stream)

20 parameters tested

air temperature, algae, 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 temperature

14 July 2026

Saipem S5 - Tolworth Brook

25 parameters tested

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

10 July 2026

Ewell Storm Tank

14 parameters tested

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

9 July 2026

Berrylands Bridge

22 parameters tested

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

25 June 2026

Bonegate Stream

25 parameters tested

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

23 June 2026

Middle Mill

18 parameters tested

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

19 June 2026

Chamber Meads Outlet

17 parameters tested

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

19 June 2026

Chamber Meads Inlet

19 parameters tested

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