JHB Water tracker / Reservoir status

Cosmo City Reservoir

Randburg region - supplies 17 suburbs

Supplying normally→ Holding steady

Cosmo City Reservoir is supplying normally right now.

Johannesburg Water's latest update: “Supplying adequately.”

Capacity

20 000 kl

Storage

28 hours

Daily demand

17 072 kl

Stands served

12 514

“Storage” is roughly how long this reservoir can keep supplying if its inflow stopped - a rough cushion, not a countdown. Figures from Johannesburg Water's reservoir register.

Daily status history

2026-05-192026-05-23

NormalFairOn bypassRunning low

What this means for your taps

This reservoir is supplying its suburbs normally. If your taps are still dry, the cause is more likely a local burst or a planned interruption - check the suburb page for your area.

Suburbs this reservoir supplies

Cosmo City Farmall Hoogland Kya Sand Lanseria Lanseria Airport Malibongwe Ridge Millgate Farm Mostyn Park Noordhang North Riding Sandpark Sonnedal Sunrella Tirong Trevallyn Zandspruit

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Status compiled from official Johannesburg Water service updates, refreshed through the day. Last updated 23 May 2026, 21:00.

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