The status of the Baynespruit bacteriological water quality is very alarming - E-coli concentrations have
far exceeded the allowable limit of both local and international guidelines for more than a decade, namely
2000-2010. Concentrations of indicator bacteria have been recorded as high as 2419000 cfu/100 ml,
whereas guideline levels of E-coli for recreational contact are about 130 cfu/100 ml. In this study,
statistical analyses were carried out on data from two sampling points to clarify the seasonal changes and
the variability of the pollution. Cross-correlation analyses showed that there was no significant
correlation between E-coli concentrations and rainfall in the uMsunduzi catchment. There was also only a
weak correlation between the two sampling points which suggests the existence of unregulated sources of
pathogenic water pollution between the sampling locations that are independent of the effect that rainfall
has on dilution and dispersion of pollution. The data indicates that the population living along the
Baynespruit has about a 2% risk of contracting gastrointestinal illness as a result of the pollution in the
stream. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2011.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:ukzn/oai:http://researchspace.ukzn.ac.za:10413/8955 |
| Date | 22 May 2013 |
| Creators | Bararugurika, Zacharie. |
| Contributors | Stretch, Derek D., Kumarasamy, Muthu. |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | English |
| Type | Thesis |
Page generated in 0.0021 seconds