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DAWASA Water Bill Estimator

Estimate your DAWASA water bill in Dar es Salaam. Domestic, institutional, commercial and industrial tariffs.

1 m³ = 1,000 litres. Average household uses 10–25 m³/month.

How DAWASA bills

DAWASA is the Dar es Salaam Water Supply & Sanitation Authority. Tariffs are set by EWURA and have three components: water consumption (per m³), sewerage (a percentage of the water charge), and a flat service charge per connection. VAT 18% is added on the subtotal.

Tariff categories

  • Domestic / Household: ~TZS 1,850/m³ — the standard residential tariff.
  • Institutional: Schools, hospitals, government — slightly higher per-m³ but with discounts on the sewerage portion in some cases.
  • Commercial / Industrial: ~TZS 2,360/m³ — full commercial rate.
  • Water Kiosk: ~TZS 1,100/m³ — subsidised tariff for public-tap operators serving low-income areas.

How much water does a household use?

  • 1–2 person flat: 5–10 m³ per month.
  • 4-person family, no garden: 10–20 m³.
  • 4-person with garden + car-wash: 25–40 m³.
  • Restaurant / hotel (per room): 1.5–3 m³ per night.

Cut your water bill

  1. Fix dripping taps — a single drip wastes ~5 m³ a month.
  2. Dual-flush toilets — saves 30%+ on toilet water.
  3. Rainwater harvesting — 50 L/m² per heavy rainfall day in Dar.
  4. Reuse "grey water" — laundry water for gardens and outdoor cleaning.

Sewerage charge

Sewerage is calculated as ~40% of the water charge for connections inside the DAWASA sewer network. If your property is on a septic tank, you pay only the water charge — confirm your connection type with DAWASA.

Pair with the TANESCO Bill Estimator for total utilities.

Frequently asked questions

Is the DAWASA Water Bill Estimator free?
Yes. Every Tawala tool is free to use, requires no signup, and runs entirely in your browser. We do not log or store any value you enter.
Are the figures up to date for 2026?
Yes. We track changes to TRA rates, statutory contributions and sector tariffs and update affected tools the same week any change is gazetted.
Can I use this on mobile?
Yes — every tool is mobile-friendly and works on any phone with a browser. No app install required.
Where do the formulas come from?
Each calculator is built from primary sources: TRA Acts and Practice Notes, NSSF Act regulations, NHIF tariffs, BoT rates and ministry gazettes. We add a citation and date stamp at the foot of each tool.

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