Low-profile septic tanks from Den Hartog Industries are designed to provide a safe and durable means for the storage of septic system byproducts. These tanks are furnished with multiple fitting locations to accommodate a variety of plumbing configurations and two openings available for burial lids or access/inspection risers. They are available in one or two compartments with 1,000, 1,200 or 1,500 gallons of storage. 712-752-8432; www.denhartogindustries.com.