Lake Victoria: CSE lays out strategy to manage water quality in Tanzania

Startegy for Mwanza metropolis suggests larger give attention to Nyashishi river wanted, connecting households to sewer strains and waste segregation

Lake Victoria is shared by three countries, Tanzania, Uganda and Kenya. Photo: iStock Lake Victoria is shared by three nations, Tanzania, Uganda and Kenya. Picture: iStock

One of many largest lakes on the planet, Lake Victoria, has been affected by quite a lot of unsustainable human actions over the past 5 a long time. Delhi-based non-profit Centre for Science and Surroundings and Nationwide Surroundings Administration Council (NEMC), Tanzania have collectively launched a report on managing its water high quality. 

The report Lake Victoria: Roadmap for Management of Water Quality in Mwanza City-Tanzania was launched on January 25, 2023 by the Everlasting Secretary, Vice President’s Workplace, Mary N Maganga. 

Learn extra: Tanzania to establish fund to conserve Lake Victoria basin

The report is the ultimate consequence of an earlier dialogue paper — Growth of an Environmental Administration Technique for Lake Victoria — that was released in July 2022

Lake Victoria and its natural world assist the livelihoods of about 45 million folks. The ecologically unique water body is shared by three nations — Tanzania (51 per cent), Uganda (44 per cent) and Kenya (5 per cent). 

A analysis staff from CSE, headed by its Govt Director Anumita Roychowdhary, is in Tanzania to conduct and coordinate the discharge assembly in affiliation with the Director Common of NEMC, Samuel G Mafwenga. 


The dialogue paper launched in July 2022 recognized Mwanza metropolis as a hotspot, contributing a considerable air pollution load within the type of industrial effluents, home sewage and dumping of strong waste.

It additionally recognised two rivers — the Mirongo and the Nyashishi — as the key water our bodies carrying home and industrial air pollution hundreds, respectively. 

A staff of CSE and NEMC performed a sampling train in November 2022 to gauge the air pollution scenario in these rivers. The outcomes confirmed substantial pollutant load within the rivers, which can be getting discharged within the lake. 

Learn extra: How corruption encourages illegal fishing on Lake Victoria

The water from the Nyashishi is extensively used for agricultural functions earlier than it meets the lake. 

“The give attention to the Nyashishi ought to now be doubled as any pollutant within the river, together with affecting the water high quality of Lake Victoria, can also adversely influence crops and human well being,” mentioned Nivit Kumar Yadav, programme director, industrial air pollution in CSE. 

Roychowdhury added:

The method to enhance Lake Victoria’s water high quality, along with treating air pollution sources, ought to embody points equivalent to administration of current wetlands, growth of waste administration practices and air pollution management programs, together with steady monitoring of water our bodies coming into the lake.

Solely 3 per cent of households are linked to sewer strains managed by the Mwanza City Water Provide and Sanitation Authority (MWAUWASA), whereas 93 per cent — particularly these dwelling on the hills — are depending on onsite sanitation (pit latrine and septic tanks), the report highlighted.

The town’s waste administration practices have 70-80 per cent waste assortment effectivity and there’s no segregation of the rubbish. 

MWAUWASA has initiated the method of connecting these households to the principle sewer strains by a simplified sewerage system, however this could possibly be a problem contemplating the realm’s panorama, CSE discovered.

Learn extra: ‘76% of Lake Victoria’s endemic biodiversity at risk of extinction’

CSE and NEMC are additionally working in the direction of strengthening the environmental influence evaluation regime in Tanzania — a ‘Phrases of Reference’ (ToR) for mining and industrial growth tasks was launched through the assembly. 

“The aim of those ToRs is to allow the mission proponent, with environmental consultants’ assist, to plan and design an EIA correctly. A ToR is designed to supply a format and construction for the EIA report, particularly on the information required, to determine the impacts of the mission on folks and the surroundings,” Mafwenga mentioned.

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