Dishwashing is one of those everyday jobs that barely registers, yet it happens in nearly every UK kitchen, several times a day, all year round. The good news is that the greenest habits here are also the simplest: a little scraping, a sensible load, the right setting and a lighter hand with detergent. None of it requires new equipment or a change to how your kitchen looks. It simply means doing the small things deliberately.

Scrape, don't rinse

Rinsing plates under a running tap before they go in the dishwasher is one of the most common kitchen habits, and one of the most wasteful. A running tap can send six to ten litres of hot water down the drain every minute, and you gain almost nothing from it — modern machines and detergents are designed to deal with food residue.

Instead, keep a silicone scraper and a small food waste caddy beside the sink. Scrape solids straight into the caddy or bin, stack the plates, and leave it at that.

• Starchy leftovers such as rice, pasta and mashed potato can go straight in the bin — they are the main cause of clogged filters.
• Greasy pans can be wiped out with a piece of kitchen roll before washing; the less fat that reaches your drain, the better.
• Burnt-on pans are the one exception. Fill them with a little hot water and a drop of washing-up liquid, leave them to soak, then wash by hand once softened.
• Sauces and gravy can be mopped up with a spatula rather than rinsed away — every scrape is water and heat you don't pay for.

Fill it properly, then fill it fully

A dishwasher is at its most efficient when it is full, because the water and energy are shared across more items. A half-empty load uses roughly the same resources as a full one, so waiting an extra few hours costs you nothing. If you genuinely need a cycle before the machine is full, use the half-load setting rather than the normal programme.

How you load it matters just as much. Poor loading is the main reason people re-wash dishes, which doubles the impact of everything.

• Place larger items at the sides and back, never directly in front of the spray arms.
• Angle plates and bowls downwards so water can reach the surfaces rather than pooling on top.
• Keep cutlery loose in the basket — spoons nested together stay dirty.
• Don't block the detergent dispenser, and check that tall items aren't stopping the top arm from spinning.

Choose the eco setting — genuinely

The eco programme on a modern dishwasher is usually the longest cycle and the coolest, which sounds counterintuitive. It works by using less water, heating it less, and giving the detergent more time to do its job. It is the setting the machine was tested on, which is why the energy label figures refer to it.

Quick washes are rarely the greener choice. They often use more water and a higher temperature to compensate for the shorter time, and they cope poorly with greasy or dried-on loads. For everyday mixed loads, stick with eco.

A few extras are worth adopting:

• Use the delay timer so the cycle runs when your household is likely to be using less hot water elsewhere.
• Skip the heated drying stage if your machine allows it, and open the door at the end to let dishes air-dry.
• Clean the filter every month. A clogged filter means cloudy glasses and second washes.
• Run a hot maintenance cycle with a cup of white vinegar or a dishwasher cleaner every couple of months to keep the machine working at its best.

Use less detergent than you think

Detergent is the part of dishwashing most of us overdo. Tablets in particular are often formulated for the worst-case load rather than the average one, and using more than you need means more chemicals down the drain and a dulling film on your glassware.

• If your dishes come out clean at the end of an eco cycle, try a smaller dose or a half tablet next time. If they are still clean, keep reducing.
• Powder or liquid gives you far more control than tablets, since you can adjust the dose to the load.
• Keep the salt reservoir topped up. Softened water means detergent works better and you can use less of it.
• Rinse aid reduces water spots, which means fewer rewashes — a small amount genuinely earns its place.
• Choose refillable or concentrated options where you can, and decant into a labelled bottle to avoid over-pouring.

When you wash by hand, do it well

Hand-washing can be efficient or dreadful, depending entirely on method. Never wash or rinse under a running tap.

• Fill one bowl with hot soapy water for washing and a second with clean hot water for rinsing.
• Work in order of cleanliness: glasses and mugs first, then cutlery, then plates, then serving dishes and pans.
• Reuse the washing water for the whole load before changing it, and rinse in batches rather than one item at a time.
• Use a sink of water to soak greasy roasting tins rather than scrubbing them under the tap.

Organise the sink area so the good habits stick

Eco-friendly dishwashing is really a storage and systems question. If the scraper, caddy and cloths live within arm's reach, scraping becomes automatic. If the dishwasher salt and rinse aid are tucked behind the bleach, they run out unnoticed.

Keep a small under-sink caddy holding salt, rinse aid, a spare cloth and a dishwasher cleaner. Store washing-up liquid in a refillable bottle with a pump, which makes it easy to use a drop rather than a squirt. And agree a simple signal in your household — a magnet, a small card, anything — that tells everyone whether the machine is clean or dirty, so nobody runs a half-empty cycle out of confusion.

None of this is dramatic. It is a handful of habits, repeated, that quietly cut your water, energy and detergent use week after week.