Average water usage and swimming pool evaporation

[sunspot]

Does anyone know how to calculate the expected evaporation rate from swimming pools during the Cypriot summer?

In Kamares we are charged for water by the cubic meter. We are trying to determine whether our meter readings makes sense, or if we have a leak in the pool or somewhere else. We have an overflow pool of average size and depth, and we irrigate our garden at night using irrigation computers on the relevant taps. Our plot is 1,100 sq meters, but only portions are irrigated.

A new meter was installed recently. We were not told about it. We noticed the new meter by chance and are taking regular readings (photos) now. Over 2 weeks, the meter says we have used 73 cubic meters, which seems high for a normal 2-person household....but we have not determined the amount of evaporation from the pool.

We have not received a water bill since the new meter was installed. We have contacted Leptos but no one is available during the holiday period.

Has anyone had experience with this kind of thing? Thank you.

[Anarita John]

Hope this helps.2021, August consumption, we were averaging 850 litres per day. However, we had put a phosphate remover in the pool and were doing frequent back washes.By the October bill we had got this down to 754 litres per day. 2 people,but 4 weeks of 2 visitors. 8 by 4 pool and 3 irrigation taps set for 2 minutes per day.
We monitor our water consumption, as we once had a €200+ bill,which we now think was due to our water being left on for our pool whilst we were away. Check your water meter, if it is spinning with no use you might have a leak or a tank which fills up very slowly. If you go out for a few hours and no one has used water, make sure your meter is not spinning on your return. If you still suspect a leak turn your water off when you are not using it and see if that makes a difference. Also, monitor how much water goes into your pool when you top up. Our pool uses around 1.5 tons a week in hot breezy weather.

Should not have replied to this.Our neighbour has just rung us to tell us that there is water running out of the overflow pipe onto the road!! Water turned off so will have to sort it when we get back from Ladies Mile.

[trevnhil]

I don't have any experience of evaporation, but the readings you mention certainly do seem high, especially for Two Weeks !!!!! We don't have a pool but I do water the garden every day. Our bills are in the region of 32euros to 38 euros for the Three Month Period. It is a euro a ton, and I believe a ton is around a cubic metre

[Jim B]

Our pool area is being renovated an has been standing for eight weeks and we've lost aboiut 17 cubic metres of water. The pool area is 51 square metres and the level has dropped about 33 centimetres which works out at just over 2 cubicmetres per week on a 11 X 5 pool.

[daveg]

An overflow pool will lose an awful lot of water through evap.
But your usage seems very high, we are two people, 10x5 pool with six irrigated areas of 5 mins a day..... AVERAGE use of 1.5 - 2 cubic meter a week this time of year...

[sunspot]

Thanks to all. Very helpful.

[Devil]

We do not have a pool, so that our water consumption is only a household plus irrigation. Our whole garden area is a tad over 1000 m², of which perhaps one third is irrigated. In hot, dry, weather, the irrigation is on for about 20 minutes twice a week (once a week in cooler weather), modulated according to the plant's needs. Our citrus trees are the thirstier and we spend far more on municipal water for their irrigation than the value of the fruit they produce! Last quarter, we consumed about 400 m³ or averaged about 900 m³ per year, an eye-watering cost, about €2 per cubic metre. In comparison, our winter consumption is only about 20 cubic metres per year.

[Uncle D]

Most evaporation happens at night when the ambient temperature drops below the pool water temperature, the heat then rises from the water in the form of evaporation.
One way to combat this is to top your pool up at dusk, this lowers the pool temp and avoids evaporation when the air temp drops

[Dot n Dash]

I cover the pool on alternate nights and whilst covered the overnight evaporation is reduced to nil. The downside is that the temperature can rise to 34

[Devil]

I cover the pool on alternate nights and whilst covered the overnight evaporation is reduced to nil. The downside is that the temperature can rise to 34

I don't have that problem: I don't have a pool!

[sunspot]

Last quarter, we consumed about 400 m³ or averaged about 900 m³ per year, an eye-watering cost, about €2 per cubic metre.

Devil, I understand the first part of this sentence, but not the bit about the annual average. Could you please explain? Thank you.

[Devil]

In winter, consumption very low tens of m3 - no irrigation. Highest last and this quarters.

[trevnhil]

No pool and you use around 900 cubic metres of water, Wow !! We have no pool either but I do water the garden for half an hour every day, but not in winter of course. Our annual consumption is around 150 cubic metres at a euro a metre

[sunspot]

In winter, consumption very low tens of m3 - no irrigation. Highest last and this quarters.

Thank you, Devil. Makes sense. We have no citrus, but our garden is thirsty right now, as sections were recently planted and need more water to get established. We are irrigating for 30 min each night on six lines. We started it at 15 min, but everything was looking too dry.

[cyprusmax47]

In winter, consumption very low tens of m3 - no irrigation. Highest last and this quarters.

Thank you, Devil. Makes sense. We have no citrus, but our garden is thirsty right now, as sections were recently planted and need more water to get established. We are irrigating for 30 min each night on six lines. We started it at 15 min, but everything was looking too dry.

It is better for the plants if they don't get water every evening, in order that they produce roots further down. Otherwise they get lazy if there is water every day. I suggest 3 times a week for ca 45 minutes, depending plants and soil until Winter starts.
In case you will have citrus one day, they need 40 l every 4 days and plenty fertilizer, best organic.

Max