Distribution and yield of trace metals from the foot of Mount Kilimanjaro to the coastal of Indian Ocean: impacts of natural and anthropogenic factors

Selemani, Juma Rajabu; Zhu, Xunchi; Majjid, Arafa; Zhang, Jing

doi:10.1002/essoar.10505741.1

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kilimanjaro and PRB region are related to elevated nutrient concentrations in groundwater (Mckenzie et al, 2010), rivers and sediments with increasing concentrations (Hellar-Kihampa et al, 2013; PBWB/IUCN, 2009), most likely due to intensive agricultural, horticultural and livestock activities. Pesticide residues from agricultural applications have been found in a river in the lowlands (Hellar-Kihampa, 2011) and metal compounds have been found in surface waters in the lower parts of the PRB, probably due to urbanization and agricultural activities (Hellar-Kihampa, et al, 2013; Selemani et al, 2022). In the nearby Meru District Council, widespread faecal contamination was found in groundwater and rivers (Elisante & Muzuka, 2016;Kitalika et al, 2017), while some cases of anthropogenic pollution occurred in the form of high concentrations of nutrients and chlorine (Kitalika et al, 2018;Makoba & Muzuka, 2019).…”

Section: Introductionmentioning

confidence: 99%

Domestic and Irrigation Water Quality on the Southern Slopes of Mount Kilimanjaro

Codalli,

Shagega,

Breuer

et al. 2024

Preprint

View full text Add to dashboard Cite

This study assessed the quality of water for drinking and irrigation purposes on the southern slopes of Mt. Kilimanjaro during the dry season under low flow conditions. Fifty-one samples covering 8 different water types were collected in a snapshot sampling campaign over 10 days in February 2023. First, physical, chemical and biological parameters were analysed and compared with Tanzanian and international requirements for drinking and irrigation water quality. The samples were then ranked according to their suitability for drinking and/or irrigation using water quality indices (WQI). All drinking water quality parameters except for E. coli and turbidity were within the reference standards. A generalized problem of faecal contamination was found in the study area, including in domestic water, which highlights the need to identify sources of contamination and remediate before distribution. The drinking water quality index (DWQI) classified 77% of the samples as unsuitable, 4% as poor or very poor and 19% as good or excellent for drinking. Irrigation water quality parameters were within the guidelines of restriction of use except for pH in 5 samples. All samples were classified as safe for irrigation according to the irrigation water quality index (IWQI). However, five other irrigation indices (Kelley’s Index, Soluble Sodium Percentage, Permeability Index, Residual Sodium Bicarbonate and Magnesium Ratio) showed potential problems with excess of sodium and magnesium. A combination of indices is recommended for assessing water quality for irrigation use.

show abstract