Luton Water Supplier

Affinity Water is responsible for supplying fresh drinking water to homes and businesses in Luton and across much of the East of England, serving around 3.6 million people. Thames Water is the separate company that collects, treats and disposes of wastewater from Luton properties.

If you have just moved into Luton, you do not need to sign up with Affinity Water in the same way as with an energy supplier - water is a regional monopoly and you cannot switch. You simply need to register your details so your account is opened and the bill is issued in your name.

Affinity Water and Thames Water contact details for Luton
Service Phone Hours
Metered supply (Affinity Water)0345 357 2401Mon–Fri 8am–6pm, Sat 8am–2pm
Unmetered supply (Affinity Water)0345 357 2402Mon–Fri 8am–6pm, Sat 8am–2pm
Sewerage & wastewater (Thames Water)0800 316 980024 hours, 7 days

Source: Affinity Water and Thames Water published customer contact numbers. Calls to 0345 numbers are charged at a standard landline rate and are normally included in inclusive minute bundles; 0800 numbers are free from UK landlines and mobiles.

Where does Luton's water come from? Affinity Water draws the majority of its supply from chalk aquifers in the Chilterns and surrounding countryside, topped up by rivers and a small number of reservoirs. This chalk geology is the reason Luton sits firmly in a hard water zone.

For a full list of phone numbers, complaints procedures and alternative contact channels, see our dedicated Affinity Water contact number guide.

Water Rates in Luton

Water rates in Luton depend on whether your property is metered or non-metered. The average annual water bill in Luton is approximately £419, combining both sewerage and supply costs. This is broadly in line with the national UK average.

Non-metered properties are billed according to rateable values determined by local councils back in the 1990s. These values are reviewed periodically and feed directly into the annual water charge. If your home was built after 1990 it will almost certainly have a water meter installed from the start.

Metered customers are billed according to their actual usage, measured in cubic metres (m³) from meter readings submitted to Affinity Water. If you live alone or in a small household, a water meter can often work out cheaper than the rateable-value charge - Affinity Water installs meters free of charge on request.

Struggling to pay? Affinity Water runs several support schemes including LIFT (Low Income Fixed Tariff), WaterSure for low-income metered households and payment plans for customers in financial difficulty. Contact Affinity Water's customer care team on 0345 357 2401 to check your eligibility.

Luton Water Hardness

Water in Luton is classed as hard water. This is because the supply filters through limestone and chalk in the Chilterns catchment area, picking up dissolved minerals - mainly calcium and magnesium - on its way to the tap.

Hard water means Luton residents are likely to see limescale buildup in kettles, pipes, washing machines, dishwashers and boilers. Over time, scale can reduce the efficiency of heating elements, shorten appliance lifespan and leave a chalky residue on taps, tiles and shower screens.

Tips for Managing Hard Water

  • Use an acidic sanitiser or descaler regularly to clean limescale deposits from bathrooms and kitchens.
  • Only fill kettles with the amount of water you need, and descale them periodically with white vinegar or a dedicated product.
  • Make full use of your dishwasher's built-in water softener and keep the salt reservoir topped up.
  • Consider fitting a whole-house softener or a magnetic scale inhibitor on the incoming mains if limescale is a persistent problem.

Water Quality and Safety

Luton's water meets the high standards set by the Drinking Water Inspectorate (DWI) and is safe to drink straight from the tap, with no need to boil or filter it beforehand. Affinity Water scored 99.96% in overall mean zonal compliance, placing Luton's supply among the highest-quality tap water in the country.

If you notice a change in the taste or smell of your water, the most common causes are:

  • Chlorination - Affinity Water adds a small amount of chlorine to disinfect the supply, which can sometimes be noticeable after maintenance work.
  • Seasonal variations - water drawn from different boreholes or sources at different times of year can taste slightly different.
  • Household plumbing - old copper or lead pipes, poorly maintained tanks or a stagnant stretch of pipe can alter taste and odour.

Running the cold tap for a minute before drinking usually clears any short-term issue. If the problem persists, contact Affinity Water so they can investigate the supply.

Reporting Water Problems in Luton

If you notice a leak, burst pipe, flooding, loss of supply or discoloured water in Luton, you can contact Affinity Water directly. You do not need to be the account holder to report a problem - anyone can call.

How to Report a Leak or Flooding

You can contact Affinity Water through any of the following channels:

  • Phone - 0345 357 2401 (metered) or 0345 357 2402 (unmetered)
  • Twitter (X) - tag @affinitywater or send a direct message
  • Website - use the "Report a Problem" section of affinitywater.co.uk

For wastewater emergencies - sewer flooding, blocked drains on the public network or foul smells - call Thames Water on 0800 316 9800, which is staffed 24 hours a day, 7 days a week.

What to Do If You Have No Water

If you suddenly have no water at your property, work through these steps before calling Affinity Water:

  1. Check the "In Your Area" or incidents section on the Affinity Water website for known outages in your postcode.
  2. Ask your neighbours whether they also have no water - if they do, the outage is on the network and Affinity Water will already be aware.
  3. Check that your internal stop tap is fully open (usually under the kitchen sink).

If your cold water is completely unavailable after these checks, or if only your property is affected, call Affinity Water on 0345 357 2401 so an engineer can investigate.

Water Discoloration

Discoloured water in Luton is usually the result of pipe repairs, infrastructure upgrades or a temporary disturbance of naturally occurring sediment in the mains. In most cases, running the cold tap for a few minutes will clear the water.

Luton Water FAQ

Fresh drinking water in Luton is supplied by Affinity Water, while sewerage and wastewater services are handled by Thames Water. You cannot switch water supplier in the UK.

The average annual water bill in Luton is approximately £419, combining both water supply and sewerage charges. The exact amount depends on whether your property is metered or billed on rateable value.

Luton has hard water. The supply comes largely from chalk aquifers in the Chilterns, which pick up calcium and magnesium on their way to the tap and cause limescale in kettles, pipes and appliances.

Yes. Luton tap water meets the high standards set by the Drinking Water Inspectorate and scored 99.96% in overall mean zonal compliance, meaning it is safe to drink straight from the tap without boiling or filtering.

Call Affinity Water on 0345 357 2401 (metered) or 0345 357 2402 (unmetered). You can also report leaks via Twitter (@affinitywater) or the Report a Problem page on affinitywater.co.uk. For sewer flooding, call Thames Water on 0800 316 9800.

Useful Luton Water Guides

Our related guides cover Affinity Water and Thames Water in more depth and explain how UK water bills, meters and complaints procedures work.

Disclaimer: The services and products mentioned on this website may only represent a small selection of the options available.