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This piece was written for the Marina News and The Zandvlei Trust Newsletters and submitted to them on 17 August 2017. It was written by the ZPAAC chair at the time – Bernelle Verster, in a volunteering capacity.

The issue of litter is a highly emotive topic and a very difficult one to solve. The Zandvlei Protected Areas Advisory Committee (ZPAAC) has been trying to address this issue for some time.

Apart from the bigger problem of how we as a society live and dispose of waste, two more immediate issues make dealing with litter hard: As Councillor Aimee Kuhl reiterated in a ZPAAC meeting in October 2016, problems like litter management have to be balanced against the needs of the massive influx of people into the Cape Metropolis, who needed housing, water and sanitation. In short and as can be seen in this article, the City simply does not have the funding to build and maintain litter traps to the extent that it is required. Secondly, to the credit of members of the public who live, work and enjoy the vlei and its surroundings, many people are contributing in their private capacity through for example litter clean ups. This is, however, of limited value. Litter is an easy and visible thing for people to complain about, but it is also easy to misjudge the scale and scope of the interventions required. We are dealing with immense inequality issues and poor design decisions from the 60’s and 70’s which result in what we see in the waterways.

As a recently appointed chair to the ZPAAC, I had a look over the minutes of the ZPAAC since inception (mid 2015) to track the progress towards better litter management. It is important to note here that ZPAAC is a statuary advisory body to the City Council and that as such it does not deal with members of the general public. The ZPAAC is not obliged to furnish any information to individuals but connects with the public through the organisations represented on ZPAAC.

Note: the minutes of ZPAAC meetings are available on this website.

The timeline of addressing the litter problem since June 2015:

June 2015:                    Bob Crask of Marina da Gama Association (MDGA) tables the state and future plans of the litter traps in Sand River canal. Heavy rain results in the litter bypassing the existing litter traps. It is acknowledged that funding is a challenge. MDGA would like cities backing to retrofit the existing litter traps.

September 2015:           Abdullah Parker (City of Cape Town) met with Bob Crask, and supports the initiative.

February 2016:              The meeting discusses the repair, cleaning and maintenance of litter traps along the river(s) feeding into the vlei. More traps were needed, and an awareness campaign was ongoing. The incidents of dumping were increasing. Dredging and rubbish collection were ongoing. A long term solution to improving the river was proposed of proactive environmental education. Currently approximately 6000 children per year attend environmental education at Zandvlei. It was also noted that the cleaning of litter traps is not always done correctly, resulting in litter escaping over the top or through the bars.

April 2016:                    Abdullah Parker provided a feedback email about the litter traps

May 2016:                     This is the first meeting I attended. Litter traps were not being maintained due to insufficient funding.

August 2016:                Litter Traps were still ‘not working’; in the absence of Bob and Abdullah there was no further feedback. In this meeting I agreed to look into options for sediment removal, which in my view was the most pressing need. Through discussions about the management of the vlei I became aware that all the matters are related, and thus became more involved in the litter trap discussions.

During this time the Zandvlei Trust received an anonymous donation to investigate an improved litter trap.

November 2016:            No specific mention of litter traps. At this meeting the Friends of the Liesbeek were invited as it was hoped to learn about their strategy, seeing the success in managing to rehabilitate the Liesbeek river. They have also more recently suffered from funding shortfalls.

During this time Anchor Environmental did a report for the Stormwater and Sustainability Branch Planning Department – Transport for Cape Town, which is to be appended to the Integrated Reserve Management Plan (IRMP).

January 2017:               Litter traps feedback had been received from Abdullah Parker.

March 2017:                  Joshua Gericke, the Zandvlei Reserve Manager, had a preliminary design for a litter trap and needed a pilot study done. He had spoken to two students, but there had been little interest shown.

May 2017:                     An emotional discussion about the litter traps ensues, but with not enough personpower to address. A few people had a workshop and worked through Prof Neil Armitage’s 1998 WRC report as well as Kyle Kriel’s 2014 report (a student of Neil Armitage). From this it was established that the ground work has been done, but that a student is not appropriate for the final design. The next step is to obtain quotes/expression of interest from consulting engineers.

Litter reduction upstream: The conversation then went towards reducing the problem at source, either through recycling or through global initiatives. Peter Kruger has looked at this at a local level with a nearby recycling depot and Angus Hemp was advised to get in touch with him.

At this meeting I am also elected chair of the ZPAAC.

July 2017 (the most recent meeting):     Following the last meeting and working with Prof Neil Armitage (Future Water Institute and Urban Water Management Group at the University of Cape Town) (who has been contributing pro bono) quotes were sent to several engineering companies. Two companies replied with quotes, JG Afrika and ZAA Engineering Projects & Naval Architecture. ZAA then met with Joshua and myself discussing the project scope and limitations. Following this ZAA revised their quote and informed us that they have selected the Sand River Litter Trap as a ZAA Corporate Social Investment Project, to be executed as a  team effort between all parties involved.

The approach was further discussed, including approaching the litter from multiple interventions, and modifying the current trap to only capture large items, allowing another litter trap downstream to be designed to capture smaller items with less potential for damage. Neil considers the cascade of interventions as a good idea, but expressed concern that the current litter trap is bad design. Neil kindly offered to advise during the project.

At this meeting the concerns expressed by some members of the public of an ‘over-engineered approach’ was also discussed. There was some concern that the litter trap is expensive and will take long to build, which does not address the immediate problem. I took input from all members attending. Neil’s response “If you are not going to do it properly you can’t do it at all” and that “it will have to be an engineering solution as we can’t deal with the social source of the challenge”, was met with agreement all round.

The committee further agreed that “You are not going to solve the problem in one go, it needs to be an iterative solution” particularly as it relates to larger and windblown litter.

Litter reduction upstream

A social approach to litter reduction around the Blue Route mall involving the Keysers river, a WESSA project in the 1990’s were mentioned. While it was noted that there is very little in that river that contributes to the litter in the Sand area, it was lauded as a good approach that we should consider for the catchment at large.

Neil also noted that the litter can be an order of magnitude higher than what we see. Nets can work but it really is about the maintenance and only works at low flow. The better litter traps is where a machine can empty it: it’s not a nice job, people start to ‘pretend not to clean it’.

As part of an integrated and iterative strategy, we need to find ways to reduce litter at source. One low hanging fruit is to get a working relationship with a recycling centre. There is apparently such an initiative underway in Noordhoek, and we are busy investigating this.