When the sun comes out, we all reach for the garden hose, paddling pool or a cold drink. But during a short heatwave, water use can double across our supply area. That sudden demand puts pressure on the pipes and can even cause water pressure to drop.
Here's why it happens, and how you can help keep water flowing for everyone.
What happens during a heatwave?
A heatwave doesn’t need to last long to have a big impact. Just a few hot days in a row can lead to huge spikes in water demand, especially in the morning and early evening.
People use more water for:
- Filling paddling pools and hot tubs
- Watering lawns and plants
- Cooling off with sprinklers
- Taking extra showers
That demand often happens all at once, which means water gets used up faster than it can be replaced in our network.
Why it matters
Even though we have enough water in our reservoirs and underground stores, we can only treat and pump it out at a certain speed. If the demand for water is too high, water pressure can drop, especially in higher-up areas like a top floor flat.
Water pressure issues can also impact people who rely on water for medical reasons, or areas where firefighting teams need fast access to water.
Water-saving changes can make a big difference
Simple changes at home can help keep things running smoothly.
Here’s how you can do your bit:
- Use a watering can instead of a hose or sprinkler
- Water plants in the evening, so less water evaporates
- Let your lawn go golden – it’ll bounce back after the heat
- Reuse water from paddling pools and cooking to water the garden
- Keep a jug in the fridge for cold drinks instead of running the tap
- Try using water outside of peak times, or overnight if you can.
We love the sunshine just as much as you do, and we want everyone to enjoy it without worrying about water supply.
These little swaps help reduce peak demand. By making a few small changes, you’re helping your neighbours, your community, and the environment. So next time the heatwave hits, stay cool, stay hydrated, and be a water-saving here.