Trash Mapping

Waste collection in Dar es salaam is a big challenge. Now that population is doubling at unprecedented pace and the effort of waste collection has not being able to match with the increasing population, people tend to dump waste any how i.e in rivers, dams, backyards, drains etc. This mismanagement of waste costs the city dearly. It is estimated that 4,000 tonnes of waste is produced everyday in the city and only 10 to 20 percent of it is collected to the main dumping site- Pugu Kinyamwezi. Authorities warns that there will be much more waste to manage by 2030 as population is expected to double to 10 million.

Improper dumping of waste especially to main rivers of dar including Msimbazi river has led to a lot of problems including flooding due to blocked channels.

In joining the effort to make the city clean OMDTZ  partnered with Green Waste Pro Ltd (GWPL) a waste collecting company  to see how we can work together to create a proper waste collection method in the city. Most places in the city flood due to solid waste clogging the drainage channels, and since GWPL aims to having a clean city and OMDTZ aims at creating a resilient city, means we share a common goal.

OMDTZ worked in providing a digital methodology to GWPL in obtaining all their clients’ information by the use of barcodes at Kisutu and Mchafukoge wards in Dar es Salaam CBD.  Students from Ardhi University and the University of Dar es Salaam who were conducting their Industrial Training were trained of how to collect data using Open Map Kit and scanned the barcodes while taking clients’ information using the Open Data Kit tool on their Android smartphones.

Data collected enabled GWPL to proper locate their clients and also increased revenue collection easily since they have an accurate number of their clients and information on whether it is a residential client or a business client since the revenue differs from one client to another, for example, a residential client should pay 15,000/= per months while business clients pay from 30,000/= per month, hence with the accurate number of clients and their descriptions, GWPL is able to estimate the total amount of money and waste that they will collect from all their clients.  This is not only about business but more of the way waste can be properly collected by the company, and how the company can be able to extend its operations to other areas which in turn will lead to a systematic waste collection of the city and create a win-win solution (A clean city and increased revenue to the company).

We’re also trying to do the same in informal settlement- Tabata ward being the pilot area. We partnered with Joshemi Company Ltd (JCL) to collect client information in two subwards of Tabata ward, Msimbazi Mama and Msimbazi Magharibi. The aim is improving trash collection to these informal settlement and see is it will be feasible and then replicated to other wards as the effort to make the city clean. OMDTZ used the same methodology to collect client information and now working with JCL on how they can use collected data and together we developed simple system in excel to help them track their client in payment. Also these data will help to increase revenue collection as all client are on the map with their details like phone numbers and JCL to know how many client they are serving within specific subward.