A water bill can feel fixed, especially when your supplier is chosen by where you live. But there are still practical ways to save money on water bills. The biggest gains usually come from one of three places: checking whether you are on the right charging method, stopping waste you cannot see, and reducing the hot water used in everyday routines.
Unlike gas or electricity, you generally cannot switch water supplier in England and Wales. Your local water company supplies your area, while a separate company may handle wastewater. That makes it even more worthwhile to understand your bill and use the options your supplier does offer.
Your bill will normally be based either on the rateable value of your home or on a water meter. This matters because the best way to cut your bill depends on which system you are using.
If you do not have a meter, your charges are usually fixed for the year. Using less water will not reduce the bill directly, although it can still cut the energy used to heat water. If you have a meter, every litre counts, and a change in household habits can show up in your next bill.
A meter often suits households that use relatively little water for the size of their property. That can include a single person, a couple, people who are out at work most days, or a household with more bedrooms than occupants.
It is less likely to be the cheaper option for a large family, frequent bath users, or homes with high garden water use. There is no universal answer, so use your water company’s online meter calculator before applying. It will ask about the number of people in your home and how you use water, then estimate the difference.
In England and Wales, many households can ask for a meter to be fitted free of charge. If you decide it is not right for you, there is commonly a period in which you can switch back to unmetered charging, although the rules and timing vary by supplier. Check the terms before agreeing.
Some properties cannot have a meter fitted because of shared pipework or access problems. In that case, ask whether an assessed charge is available. This is an estimate based on your household or property, and it can be cheaper than the old rateable-value bill.
A dripping tap is wasteful, but a hidden leak can cost far more, particularly on a metered supply. Toilets are a common culprit. A faulty flush valve can allow a steady trickle into the bowl, sometimes too quietly to notice unless you look closely.
Try the toilet dye test. Add a little food colouring to the cistern and wait without flushing. If colour appears in the bowl, water is leaking through and the flush mechanism may need repair or replacement. It is usually a straightforward job for a plumber, and some water companies offer free devices or advice.
For a broader check, turn off taps, appliances and anything that uses water, then take a reading from your meter. Avoid using water for a couple of hours, or overnight, and check again. If the reading has changed, you may have a leak. Do not forget outside taps, overflowing tanks and pipework in sheds or garages.
Responsibility for repairs depends on where the leak is. Your water company is normally responsible for its mains and may help with certain supply-pipe leaks, but homeowners are often responsible for pipework within their boundary. Report a suspected leak promptly anyway. Your supplier can explain its policy and, in some cases, may consider an allowance on the bill after a repaired leak.
Cold water affects your water and wastewater charges. Hot water also costs energy to heat, so reducing it can lower two household expenses at once. For many homes, this is where the most meaningful daily saving sits.
Showers are a good place to start. A shorter shower uses less water, but the type of shower matters too. A powerful mixer or pumped shower can use considerably more than an efficient electric shower. If you have a water meter, a shower timer is a simple way to see whether cutting a few minutes is realistic for your household.
A water-efficient shower head can reduce flow without making the shower feel weak, although it is not suitable for every system. Check compatibility first, especially with low-pressure gravity-fed systems. If your shower already struggles for pressure, fitting a restrictive head may make it less comfortable rather than more efficient.
Avoid leaving taps running while brushing teeth, shaving or washing up. Small changes sound obvious, but the benefit is larger when several people in a home repeat them every day. Fixing a tap that drips or will not fully turn off is also worth doing sooner rather than later.
Washing machines and dishwashers are usually more efficient when run with full loads. Running a half-empty machine twice is rarely the best option, even if it has an eco setting. Use the eco programme where practical, as it generally reduces water and energy use by washing at a lower temperature for longer.
There is no need to pre-rinse most dishes under a running tap before placing them in the dishwasher. Scrape food into the bin or food-waste caddy instead. If you wash by hand, use a bowl or a filled sink rather than letting the tap run throughout.
When replacing an appliance, look beyond the purchase price. Check the water consumption per cycle as well as energy use and capacity. A larger machine may be the better value choice for a busy family if it prevents repeated loads, while a smaller household may not benefit from capacity it will rarely use.
Garden use can push up metered bills quickly during warm, dry spells. Water early in the morning or later in the evening, when less moisture evaporates. Aim water at the soil around plants rather than spraying leaves, and use mulch to help beds retain moisture.
A water butt can collect rainwater for plants, though it should not be used for drinking or connected to your household plumbing. It will not solve every watering need during a long dry spell, but it can reduce use from the mains when rainfall is available.
If you wash a car at home, use a bucket and sponge rather than leaving a hose running. A hosepipe with a trigger nozzle gives more control, but it still uses treated mains water. During drought conditions, follow any temporary use ban or hosepipe restrictions set by your supplier.
Water companies offer different support schemes, so it is worth checking directly even if you assume your income is too high. Social tariffs can reduce bills for eligible low-income households. The eligibility criteria, discount and application process vary by region.
The WaterSure scheme may cap bills for some metered households that receive certain benefits and use a high amount of water because they have three or more children under 19, or a medical condition requiring extra water. It is designed to protect households whose water use is not easily avoidable.
If you are struggling with arrears, contact the water company early. Many suppliers have payment plans, hardship funds or other support. Ignoring a bill can make a manageable problem harder, while an early conversation may give you more options.
Take a few minutes to compare your latest bill with the previous one. Look for the meter reading, the period covered and whether the reading is actual or estimated. An unexpectedly high bill may be caused by a long billing period, an estimated reading being corrected, a leak, or simply more people staying in the property.
If you have a meter, submit readings when your supplier allows it. Accurate readings make it easier to spot a change early and budget for what you are actually using. If the figures look wrong, question them rather than assuming the increase is unavoidable.
The most useful first step is simple: check your charging method and your meter, if you have one. That small bit of information tells you whether a meter application, a leak check or a change in daily use is most likely to save you money. Start there, then make one practical change this week that you can keep doing.