Municipal Water Cost Calculator — South Africa
Calculate your monthly municipal water bill. Works with tiered tariff structures from major SA metros.
Last updated: May 2026
Electricity
Water
Other monthly charges optional
Calculates your monthly water bill using the municipality's stepped (increasing block) tariff structure — where higher consumption attracts a higher rate per kilolitre.
Key inputs explained
- Monthly consumption
- Your average monthly water usage in kilolitres (check your municipal bill).
- Municipality
- Tariff structures vary by municipality — select the closest match to your local authority.
A dripping tap wastes approximately 30 litres/day — that's nearly a full 6kl step per month. Fixing leaks is often the cheapest way to drop into a lower tariff block.
Frequently Asked Questions
Most SA municipalities use an increasing block tariff (IBT) where the price per kilolitre rises as consumption increases. The first 6 kL/month may be free or subsidised (indigent grant), the next 6 kL at a low rate, and higher consumption attracts progressively higher rates. This structure incentivises conservation and cross-subsidises low-income households.
Yes — the Free Basic Water (FBW) policy provides 6 kilolitres per household per month at no charge for qualifying households. This is approximately 200 litres per person per day for a family of 4 — the minimum WHO standard.
Key water-saving measures: fix leaking taps and toilets (a dripping tap can waste over 30 litres/day), install a water-efficient showerhead, capture rainwater for garden irrigation, water your garden in the early morning to reduce evaporation, install a pool cover, and check your meter reading regularly for unexpected spikes indicating a leak.
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