| dc.creator |
Kitalika, Aldo |
|
| dc.creator |
Machunda, Revocatus |
|
| dc.creator |
Komakech, Hans |
|
| dc.creator |
Njau, Karoli |
|
| dc.date |
2020-03-17T11:31:20Z |
|
| dc.date |
2020-03-17T11:31:20Z |
|
| dc.date |
2018 |
|
| dc.date.accessioned |
2022-10-25T09:24:46Z |
|
| dc.date.available |
2022-10-25T09:24:46Z |
|
| dc.identifier |
2507-7961 |
|
| dc.identifier |
http://dspace.nm-aist.ac.tz/handle/123456789/648 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/95750 |
|
| dc.description |
This research article published by the Tanzania Journal of Science, 2018 |
|
| dc.description |
The National Sanitation Foundation (NSF) and Weighed Arithmetic Index (WAI) methods for
water quality index (WQI) have been studied to evaluate their reliability in water quality
assessment in rivers. Water samples were collected in various GPS predetermined points in Temi,
Nduruma, Tengeru and Maji ya Chai rivers-Tanzania during wet and dry seasons and were
analyzed for several water quality parameters using standard methods as per APHA. Medium to
excellent water qualities were observed for pristine environment in three rivers except Maji ya
Chai under NSF and WIA methods, respectively. Excellent water quality was observed in the
pristine environment of Temi and Tengeru rivers during wet season. Maji ya Chai water was
identified unsuitable for drinking throughout the year. Fecal Coliforms (FC), Nutrients content,
BOD and Fluorides (F-
) were the major contributors to the poor water quality in Maji ya Chai
whereas FC and Nutrients were a serious problem in flood-plain for other rivers. The two
methods showed different overall Water Quality Indices using the same data thus, making them
unreliable tools for water quality assessment when used simultaneously for the same purpose.
Therefore selection of the method for water quality assessment and decision making may depend
on the water use. |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
Tanzania Journal of Science |
|
| dc.subject |
Water quality Index |
|
| dc.subject |
Mount Meru Rivers |
|
| dc.title |
Assessment of water quality variation in rivers through comparative index technique and its reliability for decision making |
|
| dc.type |
Article |
|