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How to pay your Thika water bill (THIWASCO) via M-PESA, paybill 860100, 2026

THIWASCO runs Thika's water supply, and you pay your bill from M-PESA with paybill 860100 and your water account number from the bill.

DW
by Reviewed by Josephine Njeri
4 min read Updated 15 September 2026Verified 15 Sept 2026

Thika Water and Sewerage Company, known as THIWASCO, supplies water and sewerage across Thika. Paying your bill no longer means a queue at their offices, you pay from M-PESA with a Pay Bill. The account field is the account number on your bill.

The verified paybill

THIWASCO uses paybill 860100. The account is your THIWASCO account number, printed on your water bill. It is not your meter serial number and not your phone number.

Pay your bill step by step

  1. Open the M-PESA app, or dial *334#.
  2. Select Lipa na M-PESA, then Pay Bill.
  3. Business number: 860100.
  4. Account: your THIWASCO account number from the bill. No spaces or hyphens.
  5. Enter the amount.
  6. Enter your M-PESA PIN and confirm.

Keep the M-PESA SMS. The payment usually reflects on your THIWASCO account within a few minutes to a few hours, utility posting is not always instant.

Work out the bill first

If you are not sure how much you owe, remember a water bill is not flat: it is the units used across rising tariff bands, plus a sewerage charge where you are connected, plus a fixed charge. Our water bill calculator does the sum from your meter reading, so you pay the right amount rather than guessing.

Payment not reflecting

What it costs

Standard M-PESA paybill fees apply. THIWASCO does not add a fee on top.

If you payM-PESA feeTotal off your wallet
KES 500KES 5KES 505
KES 1,000KES 10KES 1,010
KES 5,000KES 34KES 5,034
KES 20,000KES 62KES 20,062

Frequently asked questions

What is the THIWASCO paybill number?

Thika Water and Sewerage Company (THIWASCO) uses paybill 860100. The account is the account number printed on your THIWASCO water bill.

What account number do I use for Thika water?

Your THIWASCO account number from the bill, not your meter serial number and not your phone number.

How long does a THIWASCO payment take to reflect?

Usually a few minutes to a few hours. Utility posting is not always instant. Keep the M-PESA SMS as proof until it shows.

My THIWASCO water payment did not reflect. What do I do?

Check the account number you used. If it was wrong, contact THIWASCO with your M-PESA transaction code and the correct account number. Do not pay again until traced.

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