Translations:Regenwassernutzung/205/en
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Example 2
| Calculation of non-potable water requirement | ||
|---|---|---|
| * * daily requirement of non-potable water in a 4-person household: | ||
| * Toilet flushing | 30 litres / person x 4 people = | 120 litres |
| * Washing machine | 10 litres / person x 4 people = | 40 litres |
| * Garden irrigation | 1 litre / person x 4 people = | 4 litres |
| => Total non-potable water requirement per day: | 164 litres | |
| => Annual requirement: | 164 litres/day x 365 days = | 60 m³ |
When compared with the rainwater yield of 59 m³ determined in Example 1 for a single-family house, it is seen that almost the total requirement of the toilet, washing machine and garden can be covered by the average rainwater yield.
