We mainly service the mining industry but our clients also include other environmental consultancies, government, laboratories & municipalities. Our most recent client base include the following organisations

Clean Stream Biological Services [and Biotox Laboratory Services] has been performing Biomonitoring and acute toxicity analyses (including hazard classification) for the past 8 years at the West Wits and Vaal River Operations of AngloGold Ashanti.

There is a strong professional relationship between the Clean Stream [Biotox] personnel and the mine employees. The work done by the scientist are of the highest standard and the reports are written in an easy understandable manner with practical recommendations. I strongly recommend Clean Stream Biological Services [Biotox Laboratory Services] for any Biomonitoring and/or toxicity analyses to be performed.

Joël Malan

Senior Environmental Coordinator: Water Quality


Aquatico and CSBS have been business partners for over 14 years. We, at Aquatico, have used CSBS exclusively for all biomonitoring and toxicity testing services on our water monitoring projects.

The team at CSBS have always been extremely courteous and professional, supplying us with timely scientific reports that meets legislative requirements.

We have always valued their recommendations on evolving biomontoring programmes to be in line with the changing mining environment to ensure that an efficient biomonitoring programme is executed. I especially value their scientific knowledge and business integrity.

Paul Naude

Director Operations


As an independent consultant I always look to partner with service providers who are reasonably priced, are prepared to go the extra mile and deliver excellent customer service. I can confidently say, from my dealings with Piet Kotze and Brenton Niehaus, that Clean Stream and Biotox is such an organisation. My experience with these individuals has led me to believe that Clean Stream and Biotox also place high value on honesty, integrity and industry professionalism.

It is therefore with the greatest pleasure that I associate myself with Clean Stream and Biotox. I would recommend their wide range of services to anyone. They are certainly my service provider of choice when it comes to Whole Effluent Toxicity (WET) testing, diatom analysis and other laboratory services.

Peter Kimberg