Water utility Rand Water's extensive months-long maintenance from May to July was a necessary disruption to increase capacity and resilience, while improving plant availability, reliability and operational efficiency.

The maintenance, which impacted various municipalities throughout Gauteng, with many suburbs left without water for days, also aimed to ensure the prevention of a bulk water infrastructure collapse amid rising demand.

Facing questions around the outages experienced during the maintenance period and concerns around water supply, Rand Water CEO Sipho Mosai on Tuesday assured that there is no bulk water crisis.

The water utility would not be able to provision for the above-average bulk water demand had that been the case. However, maintenance, despite the disruptions that come with it, are critical, he pointed out during financial services firm PSG's Think Big series webinar, streamed on Tuesday.

"You have to proactively maintain, upgrade and refurbish infrastructure. That is what we are doing. It is something, in my view, that should be commended," he said.

The utility has a well-articulated and well understood infrastructure management model that dictates how and when upgrades and maintenance take place, and embeds the philosophies of proactive maintenance to ensure that that the bulk infrastructure does not collapse.

In response to questions around prolonged maintenance completion delays, he said that the maintenance schedules were completed on time, with no delays.

"It is incorrect to start saying it is prolonged. It was completed on time. The challenge that I would agree that people are facing is the system recovery."

In under taking the programme, there was a need to take certain systems out of commission.

Often, water interruptions emerges days after the maintenance starts, as the system becomes depleted.

"Water does not work like electricity," he said, noting that the system takes time to recover, sometimes up to a week.

"I think this is what the frustration is. How do we make the system recover quickly? If we had our way, we would recover the system immediately for everybody, [but] it takes time, and our communication throughout has been very clear that it will take time for the whole system to recover."

Further adding to this is the clearly articulated local distribution network challenges: high water losses and nonrevenue water and aging infrastructure.

He reiterated that provision of supply is three-pronged: the Department of Water and Sanitation (DWS) is the custodian of all water resources, responsible for all the water in South Africa.

Water utilities such as Rand Water buy the bulk water and purify it, and are responsible for building and maintaining related bulk water infrastructure, including purification works, pipes, pump stations and large quantity reservoirs.

This water is then sold to municipalities, which are responsible for distribution to endusers.

Rand Water committed to helping municipalities resolve water challenges.

"We have taken an active role to be part of the solution," Mosai commented, noting the establishment of special purpose vehicles (SPVs) with the municipalities to resolve some of the challenges.

Further, DWS is reviewing many pieces of legislation, including ensuring that the water services provision is undertaken by a water services authority capable of carrying out the mandate and ringfencing water and sanitation revenue.

These revisions will also assist in halting the rapid increase of municipal debt due to the water boards.

"This is putting a serious drain on our ability moving forward. In the long term it is a matter of concern."

Despite this, Rand Water continues its large-scale capital projects.

"If you look at what we are investing in the next five years, from the bulk point of view, we are talking R40-billion or so," said Mosai.

This includes upgrades to wastewater treatment works and new capacity to meet future demand.

"We are not going to be simply looking at m...