In Addis Ababa, an increasing block tariff has been used to calculate households' monthly bills for electricity and water services.

Policy makers and utility managers can use a variety of tariff structures to calculate customers’ bills for water and sanitation services, ranging from a simple flat monthly fee to complicated multipart tariffs with seasonal pricing based on metered water use.

In a period where public financial resources are particularly limited, how do we prioritize investments in water security? Which aspects are most critical for enabling growth? What are the most significant investments needed to increase water security?