The National Water Act mandates the Minister of Water and Sanitation to establish national monitoring systems that monitor, record, assess and disseminate information on water resources. To comply with this requirement of the Act and with Chapter 3 of the National Water Resources Strategy, DWS is developing and implementing a series of national water quality monitoring programmes.

Objectives

To measure, assess and regularly report on the status and trends of the nature and extent of

1. Potentially toxic substances in South African water resources (watercourses, groundwaters and estuaries)
2. The potential for toxic effects on selected organisms

National Toxicity Monitoring Programme Documents (newest first)

1. Draft Phase 3: Pilot Implementation and Testing of the Design 2008-09
2. Design framework 2005-03
3. NTMP Final Report 2003-04
4. Phase 2Monitoring Systems Design, Implementation Plan
5. NTMP minutes 2003-2004: please ask one of the contacts below

Contacts

Sebastian Jooste
David Odusanya

Publications

1. Rimayi, C., Odusanya, D., Weiss, J. M., de Boer, J., Chimuka, L., and Mbajiorgu, F. (2018). Effects of environmentally relevant sub-chronic atrazine concentrations on African clawed frog ( Xenopus laevis ) survival, growth and male gonad development. Aquatic Toxicology, 199:1-11. DOI: 10.1016/j.aquatox.2018.03.028
2. Rimayi, C., Odusanya, D., Weiss, J. M., de Boer, J., and Chimuka, L. (2018). Contaminants of emerging concern in the Hartbeespoort Dam catchment and the uMngeni river estuary 2016 pollution incident, South Africa. Science of The Total Environment, 627:1008-1017. DOI: 10.1016/j.scitotenv.2018.01.263
3. Rimayi, C., Odusanya, D., Weiss, J. M., de Boer, J., and Chimuka, L. (2018). Seasonal variation of chloro-s-triazines in the Hartbeespoort Dam catchment, South Africa. Science of the Total Environment, 613-614:472-482. DOI 10.1016/j.scitotenv.2017.09.119
4. Rimayi, C., Chimuka, L., Odusanya, D., de Boer, J., and Weiss, J. (2017). Source characterisation and distribution of selected PCBs, PAHs and alkyl PAHs in sediments from the Klip and Jukskei Rivers, South Africa. Environmental Monitoring and Assessment, 189(7):1-16. DOI 10.1007/s10661-017-6043-y
5. Rimayi, C., Chimuka, L., Odusanya, D., de Boer, J., and Weiss, J. (2016). Distribution of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofurans in the Jukskei and Klip/Vaal catchment areas in South Africa. Chemosphere, 145:314-321.
6. Rimayi, C., Odusanya, D., Mtunzi, F., Tsoka, S. (2015). Alternative calibration techniques for counteracting the matrix effects in GC–MS-SPE pesticide residue analysis – a statistical approach. Chemosphere 118, 35-43.

Reports

1. DWAF (2005) National Toxicity Monitoring Programme (NTMP) for Surface Waters Phase 2: Prototype Implementation Manual. By K Murray, RGM Heath, JL Slabbert, B Haasbroek, C Strydom and PM Matji. Report No.: N0000REQ0605 ISBN No.: 0-621-36403-7. Resource Quality Services, Department of Water and Sanitation, Pretoria, South Africa.
2. Murray, K. (2005) National Toxicity Monitoring Programme for Surface Waters Draft Conceptual Design Framework & Record of Decision Report v. 1.23

Terminology

• Toxicants are chemical pollutants capable of exhibiting a toxic effect.
• A toxic effect manifests as an impairment of the activity of an organism or cellular or sub-cellular system.
• Target organisms potentially include humans, other mammals, fish, invertebrates and plants.