Kenya Water Bill Estimator

Estimate your monthly water bill for Nairobi (NCWSC), Mombasa, Kisumu, Nakuru, or Eldoret. See step-function tariff breakdown with sewerage charges.

Utilities & EnergyWASREB / Individual Water UtilitiesUpdated periodically
0 m³100 m³
Estimated Monthly BillNairobi City Water & Sewerage Company (NCWSC)

KES 874

For 15 m³ consumption in Nairobi

Bill Breakdown

ItemAmount
0 – 6 m³ (Lifeline) — 6 m³ × KES 3/m³KES 19
7 – 20 m³ — 9 m³ × KES 47/m³KES 423
Water ChargeKES 442
Sewerage (75%)KES 332
Meter RentKES 100
Total BillKES 874

Important Notes

  • •Water tariffs are approved by the Water Services Regulatory Board (WASREB)
  • •Sewerage charge is typically 75% of the water bill for connected properties
  • •Meter rent is a fixed monthly charge regardless of consumption
  • •Lifeline tariff (0–6 m³) is subsidized for low-income households
  • •Rates shown are for domestic/residential connections; commercial rates are higher

Frequently Asked Questions

How is my water bill calculated in Kenya?
Water bills in Kenya use a step-function (block) tariff. You pay a lower rate for the first few cubic metres (lifeline tariff), and the rate increases as your consumption rises. A sewerage surcharge (typically 75% of the water charge) and fixed meter rent are added.
What is the lifeline tariff?
The lifeline tariff is a subsidized rate for the first 0–6 cubic metres of water consumed per month. It ensures basic water access for low-income households at a very low cost (typically KES 2–3 per m³).
How much water does an average Kenyan household use?
An average household of 4–5 people in Nairobi uses approximately 10–20 cubic metres (m³) per month. This covers cooking, cleaning, bathing, and laundry. Households with gardens or larger families may use 30+ m³.
Why is there a sewerage charge?
The sewerage charge covers wastewater treatment and sewer network maintenance. It's calculated as a percentage (usually 75%) of your water consumption charge. Properties not connected to the sewer network may be exempt.
Which body regulates water tariffs in Kenya?
The Water Services Regulatory Board (WASREB) approves all water and sewerage tariffs in Kenya. Individual water utilities (like NCWSC for Nairobi) propose tariffs, and WASREB approves them after public consultation.

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