Effects of Water Pipe Burst on water quality and non revenue water in Arusha city: a case study of AUWSA

Mosha , Hortencia Dominic (2014) Effects of Water Pipe Burst on water quality and non revenue water in Arusha city: a case study of AUWSA. Masters thesis, The Open University of Tanzania.

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Abstract

Chronic water losses have been the hallmark of Tanzania especially AUWSA water management over the decades. The rapid growth of Tanzanian cities including Arusha City, coupled with increased volumes of water for irrigated agriculture and industry, has meant that there is much less water to go around in the urban centers. The estimated annual volume of NRW in AUWSA water utilities is in the order of 5,764,621.08 m3 which is around 41.0% while the Government is struggling to reach 20% or below. The aim of this research was to assess effects of water pipe leaks on water quality and on non revenue water. (NRW) in Arusha Urban Water supply and Sewerage Authority (AUWSA). There are several ways identified as major contributor to high NRW these includes unauthorized connections (illegal and by pass) account to 24% of that about 30% of respondents pointed out that the main causes of NRW in AUWSA was caused by leakages from water system (transmission mains, Distribution mains, Utility’s reservoirs, service connections); 16% mentioned that the causes of water losses caused by stopped/malfunctions water meters (Bulk and customer water meters), whilst 14% respondents enumerated that Non revenue water was caused by other reasons like corruption and bribery among meter readers. It is recommended that successful utilities actively address NRW by controlling physical losses, ensuring customer meters are accurate and making all efforts to keep the number of illegal connections to minimal. Taking these measures can boost revenue by increasing the amount of water that can be billed while reducing wastage of the product. This increases profitability and improves the return on investment.

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