Location

Outfall at RMI Site

Dollis Brook

Dollis Brook in England

Dataset summary

Outfall at RMI Site has data for algae, colour, water_use, clarity, previous_weather_description, odour, pollution_sources, on_the_water_s_surface, water_flow, water_level, ammonia, conductivity, turbidity, water_temperature, phosphates, current_weather, previous_weather, air_temperature, and current_weather_description from 15 June 2025 to 8 May 2026.

51.616235, -0.188778

Summary of quantitative results

Guidelines for exceedances are based on: United Kingdom
  • Chemistry tests

    • Ammonia

      Hanna checker (ammonia - low range)

      mg/L

      0.16

      Latest

      0.16

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • Conductivity

      Other pen-type meter (conductivity)

      μS/cm

      1,100.0

      Latest

      927.17

      Average

View observation list ›

About this location

  • Water body type River or stream
  • Dataset Brent Catchment Water Quality Working Group, Thames21
  • Monitoring purpose Investigative
  • Data collector Judith Howlett
  • Land use Urban residential, Urban park
  • Bank vegetation Trees and shrubs
  • Location description Outfall at RMI site. Chronic issues with this outfall and long term misconnections, sewage fungus, smell etc. Unhealthy! Under TW SWOT in summer of 2025 and problems addressed in Holden Road after which Ammonia and Phosphate levels improved