Faced with the consequences of climate change, water is becoming increasingly precious. That's why it's vital to collect rainwater using a tank, a water collector or a cistern. That way, you'll be more independent in meeting your needs and those of your family: drinking, preparing food and hot drinks, cooking, washing your hands, etc. But having water isn't enough - it has to be purified to protect your health and prevent you from falling ill. Drinking unfiltered water containing pathogens, bacteria or viruses can cause nausea, diarrhoea, abdominal cramps, weight loss, vomiting, chills, headaches or even fever. As specialists in water filtration, we recommend ultrafiltration to filter the collected water. We recommend checking upstream that your water is not contaminated by chemical pollutants by having it analysed in a laboratory. If this is the case, additional treatment (such as activated carbon) is required.