I have spent twenty years working in energy operations, where every resource on site is measured, logged, and accounted for. Offshore, fresh water is made on board and nobody wastes a drop. You learn quickly what water actually costs.
Then I come home, and I watch the tap run while someone brushes their teeth.
Photo: Joshua Hoehne / Unsplash
In the Gulf and across MENA, we live in one of the most water-scarce regions on Earth. Yet household water use here is among the highest in the world, partly because desalinated water arrives so reliably that it feels free. It is not free. Every litre is energy, money, and in most of our countries, a strategic resource.
So let us do what engineers do: measure the problem, then fix the biggest leaks first. In most homes, the biggest leak is not a broken pipe. It is the open tap.
Where the water actually goes
A standard household tap flows at roughly 6 litres per minute. Older fixtures common in the region can push 10 to 12 litres per minute. Keep that number in your head as we walk through an ordinary day.
Morning wash-up (per person)
Brushing teeth with the tap running: 2 minutes at 6 L/min gives 12 litres. A face wash with running water adds another 6 to 10 litres. Shaving with the tap open costs 10 to 15 litres. One person’s ten-minute morning routine can quietly send 25 to 35 litres down the drain before breakfast.
Washing dishes by hand
This is the big one. Washing a family’s dinner dishes under a continuously running tap means 15 to 20 minutes of flow, which is 90 to 120 litres for one meal. The two-basin method (one basin for washing, one for rinsing) does the same job with about 20 litres. Same clean dishes, 80% less water.
Evening wind-down
Teeth again, face wash again, kids “washing hands” while actually playing with the water. Call it another 15 to 25 litres per person.
The habit problem, and the hardware fix
Here is the honest truth from someone with a house full of routines: telling your family to close the tap works for about three days. Habits drift back. Kids forget. Teenagers definitely forget.
In industry we never rely on behaviour alone. We engineer the waste out. At home, the equivalent is the automatic (touchless) faucet: an infrared sensor opens the flow when hands are under the tap and closes it the instant they move away.
The water only runs when it is doing work. No willpower required.
The numbers: what a sensor faucet actually saves
Let us estimate conservatively. During a typical wash, whether teeth, face, hands or dishes, the tap is doing useful work only 30 to 50% of the time it is running. The rest is pure loss while you scrub, lather, or reach for a towel.
Per person, per day:
| Activity | Standard tap | Sensor tap | Saved |
|---|---|---|---|
| Teeth (twice daily) | 24 L | 4 L | 20 L |
| Face and hands (4 to 6 times) | 20 L | 8 L | 12 L |
| Daily total | 44 L | 12 L | ~30 L |
Roughly 30 litres saved per person, every day. That is around 900 litres a month, or 11,000 litres a year, from one bathroom tap.
Now add teenagers
A household of five (two adults, a teenager or two, a younger child) multiplies everything. Kids leave taps running. Teenagers treat the bathroom like a private spa. Realistically, a five-person household wastes 120 to 180 litres a day at the taps alone.
Fit sensor faucets in the kitchen and main bathroom, and a family of five saves in the range of 3,500 to 5,000 litres a month, about 50,000 litres a year. That is a small swimming pool, saved without changing a single habit.
What that water costs in dirhams
Water on your bill costs more than the headline tariff. Take Dubai as an example. In 2026, DEWA’s residential rate starts at AED 7.70 per cubic metre (1,000 litres). Add the fuel surcharge of AED 1.10, the municipality sewerage fee of roughly AED 4.40, and 5% VAT on top. The true all-in cost is about AED 13 to 14 per 1,000 litres, and higher once your consumption climbs into the upper tariff slabs.
Run the numbers on our examples:
- Dinner dishes under a running tap: around 3,000 litres a month, roughly AED 40 per month for one daily chore
- One person’s tap waste: 11,000 litres a year, about AED 150 per year
- Family of five: 50,000 litres a year, roughly AED 650 to 700 per year, and more if the savings pull you down into a cheaper tariff slab
A good sensor faucet typically pays for itself within one to two years on the bill alone. In Saudi Arabia the tiered tariff climbs steeply with usage, so high-consumption households can see an even faster payback. And honestly, in our region, the payback that matters most is not on the bill. Every litre we do not waste is desalinated seawater that did not need to be produced.
Five changes ranked by impact
- Sensor faucets in kitchen and main bathroom: biggest saving, zero habit change
- Two-basin dishwashing instead of a running tap: 80% less water per meal
- Aerators on remaining taps: cuts flow from 10-12 L/min to 5-6 L/min for a few dirhams
- Tap-off rule for teeth: free, if you can enforce it (good luck)
- Fix drips: one dripping tap loses 15 to 20 litres a day
The bottom line
Water conservation in MENA is not about sacrifice. It is about engineering out waste that gives you nothing in return. Nobody enjoys the 20 litres that ran while they brushed their teeth. Remove the loss, keep the comfort.
Start with the tap your family uses most. Measure a week. You will see it on the meter, and on the bill.
