RAINWATER HARVESTING SYSTEMS

A PRECIOUS RESOURCE

Over 97% of the total 1.4 million km

3

of water on Earth is seawater, which cannot be used for human consumption. The remaining 3% of the

freshwater is mostly composed of ice (concentrated at the Poles).

The available part for human consumption is only 0.3%; this percentage is progressively reducing due both to the polluting substances

being drained into the water and to the irregular rainfall, always less frequent and often dangerously overabundant, which do not enable an

adequate supply by the water main.

WHY SHOULD RAINWATER BE RECOVERED?

The use of rainwater is, therefore, a precious contribution to reducing waste of drinking water. It encourages more careful consumption and

awareness and leads to considerable cost savings (up to 50%).

Rainwater is particularly indicated in the following uses:

•

for the washing machine and household cleaning: rainwater does not stimulate the formation of limescale; the use of rainwater reduces

consumption of limescale removers and, thanks to its best cleaning action, also reduces the use of detergents (about 50%);

•

for gardening: rainwater used to water plants and flowers stimulates optimal absorption of minerals;

•

for the WC: rainwater does not stimulate the formation of lime scale.

PRO-CAPITA CONSUMPTION OF DRINKING

WATER IN DOMESTIC USE

Drinking

Rainwater

OVER HALF

THE DAILY DOMESTIC

CONSUMPTION OF DRINKING WATER

CAN BE REPLACED WITH

RAINWATER

BATH/SHOWER

28%

12

WC

29%

WASHING UP

4%

PERSONAL HYGIENE

4%

OTHER

4%

OTHER

4%

GARDENING

6%

DRINKING/

COOKING 3%

CAR

WASHING

3%

LAUNDERING

15%