Observation

Outfall at RMI Site

Dollis Brook

River or stream

November 4, 2025 at 9:50 AM

QA status: Reviewed: quality check complete

Weather observations

  • Current weather

    Community scientist interpretation

    • Sunny
    • Cloudy
    • Windy

  • Weather in the past 24hrs

    Community scientist interpretation

    • Sunny
    • Cloudy
    • Rainy
    • Windy

Qualitative readings

  • Clarity

    Community scientist interpretation

    Clear

  • Water use

    Community scientist interpretation

    other

  • Colour

    Community scientist interpretation

    Colourless

Issue reporting

  • Odour

    Community scientist interpretation

    None

  • Pollution sources

    Community scientist interpretation

    Residential discharge, Urban/road discharge

  • Water surface

    Community scientist interpretation

    None

Physical tests

  • Water flow

    Community scientist interpretation

    Slow

  • Water level

    Community scientist interpretation

    Low

Chemistry tests

  • Ammonia

    Hanna checker (ammonia - medium range)

    0.23 mg/L

  • Conductivity

    Other pen-type meter (conductivity)

    888 μS/cm

  • Water temperature

    Other thermometer

    14.2 °C

  • Phosphate

    Hanna checker (phosphate - low range)

    0.42 mg/L

  • Turbidity

    Turbidity tube (45 cm)

    ≤ 12 NTU

Notes

Testers Jude and Nicky Results still much improved in comparison with earlier samples and SWOP action from Thames Water Still debris in body of Outfall and some sewage fungus remains on base, but bricks of the walls are now clearly visible when previously covered in fungus