Alibaba.com offers 20 septic tank products. About 80% of these are water treatment, 10% are hdpe, and 5% are waste management. A wide variety of septic tank options are available to you, There are 20 septic tank suppliers, mainly located in Asia. The top supplying country is Malaysia, which supply 100% of septic tank respectively. Septic tank products are most popular in Southeast Asia, Eastern Asia, and South Asia. You can ensure product safety by selecting from certified suppliers, including 12 with Other certification.