Despite Vietnam’s recent macro-economic gains, WASH-related diseases continue to limit improvements in health and development. Approximately 71% of the rural population in Vietnam has access to hygienic sanitation- compared to 90% of the urban population (JMP, 2017). Achieving Vietnam’s SDG for rural sanitation will require hygienic sanitation installed for 2 million rural people every year until 2025 (MARD, 2010). Barriers to rural sanitation include accessibility and affordability of quality sanitation products/services as well as limited demand (WSP, 2014 & PSI/Vietnam, 2016). In 2016, PSI partnered with ROTO- the manufacturer of a locally-produced, MOH-approved plastic septic tank to expand ROTO rural market coverage in Tien Giang province.