The Gulper

London School of Tropical Hygiene and Medicine

The Gulper is a manually operated pump to empty contents from pit latrines that can be constructed using locally available materials.

Product description Brand name and product description

The Gulper is a manually operated pump to empty contents from pit latrines. A standard Gulper will reach 1m-1.5m into the pit and an extendable Gulper will reach up to 2m into the pit. The Gulper can pump semi-solid sludge, be constructed using locally available materials, be paid off through fees charged by emptiers for their services, and work in confined spaces. The design is open source, and has been trialled in many countries.

Target region(s) Target region for distribution/implementation (listed by country if specified)


Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"

The Gulper can be manufactured globally using locally available materials, and has been implemented by a number of organizations including Engineers Without Borders, Water for People, SEB Engineering, Programme Solidarite Eau, Irish Aid, and Water Aid.

Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.

Costs vary depending on local materials, approximately 160 USD.

Competitive landscape Similar products available on the market. May not be a comprehensive listing.
SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

Goal 6: Clean water and sanitation

Target user(s) Target user/consumer base (country, income segment)

Latrine emptiers

The @AutodeskFdn blogged about our how-to guide for communities writing proposals for development projects