The size of a septic tank is not directly related to the number of bedrooms in a home. Instead, the size of the septic tank is determined by the amount of wastewater produced by the household. A 1000 gallon concrete septic tank is generally suitable for a small to medium-sized household, but the specific number of bedrooms that it can support will depend on the wastewater production of the household. A 1000 gallon concrete septic tank is ideal for a 1 to 2 bedroomed house. It is important to consult with a professional septic system installer or engineer to determine the size and capacity of the septic tank needed for your home. They will consider factors such as the size of your household, the type of plumbing fixtures you have, and the soil conditions on your property to determine the appropriate size and design of your septic system. Overall, it is essential to choose a septic tank that is properly sized and designed to meet the needs of your household and ensure the efficient and effective treatment of your wastewater.