Low-profile Dominator septic tanks from Snyder Industries can be buried without ballast water and backfilled with trash-free and free-flowing native soils. They can be used as holding tanks, with pump tank versions available. Their one-piece construction means there are no seams to leak or structurally fail after installation. They are available in 750-, 1,000-, 1,250- and 1,500-gallon sizes (with 1,200- and 1,700-gallon water cisterns), with single or double compartments. Monolithic structure provides top load strength and manway isolation keeps manholes from distorting during backfill and pumpouts. They are available with tees and gaskets preinstalled. 402/467-5221; www.waterandseptictanks.com.