Serving parts of North West London and the Home Counties.

Customer Zone

Welcome to Customer Zone

Here you will find an easy to view summary of all things water related in your area including:

  • Current incidents
  • Planned works
  • Water Quality reports

Simply type your postcode in the box below to find out more. (e.g AL1 or AL1 1AA)


There are currently no incidents in your area. Please click on the map to check for any planned works or incidents nearby that might affect you.




Planned Works

Repair and Maintenance



Hardness and Fluoride Information

The area supplied by Affinity Water has 'hard' water. The hardness occurs naturally and is characterised by the presence of high levels of calcium and magnesium, which are good for healthy teeth and bones. Please see below for more detail about your area.

CALCIUM121 mg/l
Calcium is the principal constituent of hardness.
Total hardness is usually expressed in terms of calcium carbonate and is measured in milligrammes per litre (mg/l) which is the same as parts per million (ppm). The recognised classification scheme we are using is: 0-75 soft, 76-150 moderately hard, 151-300 hard, 300+ very hard. Your water is very hard.
Degrees English (or Clarke)21.175
This hardness measurement is used on some British appliances.
Degrees German16.94
This is used on some German appliances.
Degrees French30.25
This is used on some French appliances.
MILLIMOLS3.025 mmol/l
Millimols per litre. Some appliances refer to water hardness in millimols per litre (mmol/l).
FLUORIDE0.141125 mg/l
Fluoride naturally occurs in the water in many areas. Affinity Water does not add any fluoride to your water. Fluoride is measured in milligrammes per litre (mg/l).

This information is provided as a guide only and is subject to our Terms and Conditions. We recommend you obtain specialist advice and do not rely on the information provided. Always follow the instructions provided with the appliance.

Incidents & Works

We are not currently carrying out work within your street.

Mains Renewal / Trunk mains work

Click on one of the links below for further information.

Your sewerage supplier is Thames Water.

Although we supply water to your property, we are not responsible for processing your waste water.

Sewerage charges cover the disposal of rainwater from your property and we collect the charges on behalf of Thames Water for disposal of waste water.

If you have a query about your waste water or if water from sewers is affecting your home, you will need to contact your sewerage provider directly.

Thames Water