The department said there had been a significant improvement in at least seven provinces including Gauteng, which recorded water levels at 96% while the Eastern Cape had risen to 51%.
The levels had dropped to a record low of just over 29% at the end of last month with the dam affected by a combination of heatwaves and a lack of continuous rainfall in the Vaal Dam's catchment areas.
The call comes amid rising temperature's leading to higher water usage across the country.
Pollution and sewage have been affecting the Vaal River for years now.
Dams in the province are rippling at nearly the 100 percent capacity mark.
In a statement on Thursday, the department said dam levels dropped from 37.6 % last week to 37.0% in this week.
How do we explain the dire state of water and sanitation infrastructure and the seeming inability of municipalities to maintain them?
Two portfolio committees said that due to the economic devastation caused by the COVID-19 outbreak and lockdown, the water department and local government association needed to reconsider proposals to increase tariffs.
The Department of Water and Sanitation, alongside the Department of Basic Education, dispatched tankers to schools that were without access to water across the country to bolster their fight against COVID-19.
Our relationship with water cannot just be a hollow one between rain and our cups, writes Yonela Diko.
The Water and Sanitation Department said that it was concerned about the Vaal, which formed part of the integrated Vaal River system.
The department on Wednesday said Thami ka Plaatjie and two former officials were being investigated after an audio discussing their plans to take the money for their personal enrichment surfaced.
Thami ka Plaatjie was suspended after audio emerged of him and two former employees discussing their intensions to siphon from a budget of R200 million.
The level is now hovering around 49.8% which is significantly lower compared to 71.5% that was recorded this time last year.
DA MP Emma Powell questioned Susan Shabangu’s credentials as a water expert, prompting an angry response from Lindiwe Sisulu.
The project, called The Brown Revolution, is to be rolled out in schools to ensure children learn in clean environments.
However, the Water Department said that there were still high-risk municipalities like Beaufort West, Prince Albert, Laingsburg, Kannaland and Mossel Bay.
Residents there have been provided with some water tanks after violent protests shut down the area, with residents lashing out at government for leaving them without water for years.
