Septic tanks are special tanks used to collect and store liquid waste, mainly domestic, municipal or industrial sewage. They are sealed tanks that prevent leakage of substances into the soil or groundwater. Septic tanks are commonly used in areas where there is no access to a municipal sewage system or its cost is too high. They are maintained and emptied regularly by specialist companies to avoid overflows and ensure that the sewage disposal system functions properly. Read the practical advice we have prepared on how to choose the right septic tank and additional accessories to control sewage levels, hydrogen filters and biopreparations to eliminate unpleasant odours.