Johannesburg Water (JW) said following a high-level meeting over the weekend, widespread interventions, would strengthen efforts to restore water.
Additional teams were arranged, after a service delivery shut down by the South African Municipal Workers Union (SAMWU).
By midday on Sunday, some systems improved slightly, including Sandton, Midrand, Randburg, Roodepoort, Commando, Central and Soweto systems.
Other affected systems are Braamfischerville Reservoir 1, Meadowlands, Chiawelo, Zondi, Witpoortjie, Bushkoppies, Cosmo City, Olivedale, Honeydew, Power Park, Doornkop, Protea Glen and Forest Hill tower bypass.
Systems where water is on the decline are Illovo, Bryanston, Morningside, Linbro Park, Marlboro, Randjieslaagte, Dunkeld, Linksfield, Erand, Grand Central, President Park, Diepsloot, Orange Farm, Ennerdale, Lawley and Lenasia.
In Ekurhuleni, most systems were supplying fairly on Sunday, except the Churchill Pump Station, which supplies Dawnview, Fishers Hill, Primrose Hill and Primrose.
Similarly, the City of Tshwane said overnight interventions helped its reservoirs recover.
These include the Soshanguve L, Mabopane, Klapperkop Carina and Heights systems, Atteridgeville, Laudium and Erasmia.
The City said both reservoirs at Rooihuiskraal are at an estimated 30%, Louwlardia (31%), Brakfontein (22%), Bakenkop (East is at 20%) and (West at 31%).
Picture: Supplied