MWA e-Service — Check and Pay Your Bangkok Water Bill
The Metropolitan Waterworks Authority’s online services for customers in Bangkok, Nonthaburi and Samut Prakan — from this month’s bill to reporting a burst pipe.
www.mwa.co.th
What you can do
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See the amount due and pay online
Check the current amount, confirm whether a payment has been recorded and keep the proof yourself — no waiting for the slip tucked into your gate.
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Review your consumption history
Compare the units used month by month to tell whether a higher bill comes from real usage or from a leak nobody has spotted yet.
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Get the bill electronically
Switch to an electronic invoice and receipt that stay in your account, instead of paper that goes missing or gets rained on.
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Report a burst pipe or a dry tap
Report a burst main, a leak or a loss of supply from your phone, with the location, so a crew can get to it sooner.
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Check planned interruptions in your area
Look up temporary shut-offs and maintenance work affecting your neighbourhood, so you can store water in advance instead of finding out at the tap.
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Apply for a new connection or meter work
Request a new connection, ask for a meter to be moved or tested, and follow the status of that request in the same place.
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Information straight from the official channel
Balances and announcements come from MWA’s own system, which cuts the risk from fake links and messages trading on the agency’s name.
What is MWA e-Service?
MWA e-Service is the online service set run by the Metropolitan Waterworks Authority (MWA), the state enterprise that produces and distributes tap water for Bangkok, Nonthaburi and Samut Prakan. It moves work that once meant a trip to a branch office or a call to the service centre onto one screen: the amount due, payment, consumption history, electronic billing, burst-pipe reports, interruption notices and new-connection requests.
The system works from the customer number, which is attached to the address rather than to a person — so a tenant who pays the bill can read the balance and the usage history even though the account stands in the owner’s name.
The main tasks, and what each needs
| What you want to do | What you need | Notes |
|---|---|---|
| Check the balance and pay | Customer number | Appears once the meter is read and that cycle’s bill issued. |
| Read your consumption history | An account with the property linked | Compare units month by month to explain an odd bill. |
| Receive the bill electronically | A working email address | If a cycle’s bill is missing, check the spam folder. |
| Report a burst pipe, a leak or no supply | The location and a contact number | Be specific — the lane name and a nearby landmark. |
| Look up planned interruptions | Your district or area | Check before anything water-heavy. |
| Apply for a connection or a meter check | Proof of rights over the property and an ID card | Paperwork and charges follow the agency’s rules — confirm on the official site. |
An unexpectedly high bill: check it yourself first
A bill that jumps rarely means a faulty meter; it usually means water leaving quietly all month. The commonest cause is a worn flapper in the toilet cistern, letting water trickle into the bowl almost silently. Next is a pipe buried under the floor or the ground, which shows up as a damp patch with no obvious source, or a drop in pressure.
- Turn off every tap in the house, including the washing machine, the water heater, any garden irrigation and the pump.
- Write down the reading on the meter, then watch whether the smallest dial or digit moves at all.
- Leave it for an hour or two without using any water, then read it again. A changed number means water is escaping inside your own plumbing.
- Drip food colouring into the toilet cistern and leave it without flushing. If colour appears in the bowl, the flapper is leaking and should be replaced.
No water, burst mains and planned shut-offs
When the taps run dry, look at the interruption notices for your area first: repairs and new pipe-laying are normally announced ahead of time with a window. For a main bursting in the street, or water welling up through the surface, report it immediately and describe the spot precisely — escaping water undermines the road until the surface gives way.
Watch for scams using the agency’s name
- The commonest pattern is a message claiming arrears and disconnection today, with a link to pay at once. Always check the balance in your own account first.
- The genuine system lives under mwa.co.th. Read the domain in the address bar before entering anything or paying.
- Never transfer to a personal bank account — water bills are paid only through the channels the agency designates.
- If someone turns up claiming to be staff, collecting money or offering to swap the meter, ask for identification and call the service centre on the number published on the official site first.
Why this page exists
Hardly anyone searches for “MWA e-Service”. People type “check water bill”, “no water today” or “why is my water bill so high”, at the moment the problem is in front of them. MWA’s site is open to search engines, but the parts that matter most — your balance and your consumption history — sit behind a sign-in and never surface in results. This page is the signpost in between: ordinary language about what the system does, then a direct hand-off to the official site. ThaiGov.co is an independent directory with no connection to MWA, and it never takes personal details or payments.
How to use it
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Confirm your address is in MWA’s service area
MWA is responsible for Bangkok, Nonthaburi and Samut Prakan only. In any other province your supplier is the Provincial Waterworks Authority (PWA), which runs a separate system on a separate website.
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Find your customer number on the bill
The system identifies your property by the customer number or the meter number. Both appear on the bill and the receipt; if the paperwork has gone, check the meter outside the property.
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Register or sign in on the official site
Type MWA’s address in yourself rather than following a forwarded link, then register with an email address and phone number you actually use — the system verifies you and sends notices through them.
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Link your customer number to the account
Once inside, add the customer number to your account. One account can hold several properties — useful if you have a home and a shop, or rent rooms out.
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Do what you came for — and keep the receipt
From that one account you can view arrears, pay, read your usage history, opt into electronic billing or report a leak. Save the receipt or the reference number every time, in case you need it later.
Go to the official site
You are leaving ThaiGov.co for the agency’s official website — www.mwa.co.th
Frequently asked questions
Which areas does MWA cover?
MWA produces and distributes tap water for Bangkok, Nonthaburi and Samut Prakan. Every other province is served by the Provincial Waterworks Authority, which runs its own separate online system. Outside those three provinces, MWA will not find your account.
Which number do I need to check the bill?
Use the customer number on the water bill, or the meter number on the meter outside. It belongs to the address rather than to a person, so a tenant who pays the bill can check the balance. If you have just moved in and no bill has arrived, ask the owner or the building’s juristic person.
This month’s bill is unusually high — what should I do first?
Compare the units used with previous months in your consumption history. If they jumped while your habits did not, turn off every tap and water-using appliance and watch the meter — if it still turns, water is escaping inside your own plumbing, usually from a leaking toilet or a pipe under the floor. Have a plumber look before asking MWA to test the meter.
Registration or sign-in fails — how do I fix it?
Check that the customer number matches the bill exactly, with no stray spaces or dashes. If the OTP does not arrive, wait a moment and request it again, and look in your email spam folder. If you still cannot get in, or the registered phone number is no longer yours, contact the service centre on the number published on the official site.
No water, or cloudy water — what should I check?
Check the interruption notices for your area first — maintenance and pipe-laying are announced in advance with a time window. If nothing is listed and your neighbours still have water, the fault is probably your own pump or pipework. If the whole lane is affected, report it to MWA.
How do I know a message claiming to be from MWA is genuine?
The agency does not send links asking for an OTP, a password or the number on the back of a card, and it does not demand a transfer within minutes to avoid disconnection. The safest move is to ignore the link, type the official address — which sits under mwa.co.th — yourself, and check the balance in your own account.
Does using the online service cost anything extra?
Viewing your balance, your usage history and the announcements is free. Payment channels may charge their own fee, shown before you confirm. Work such as a new connection carries charges set by the agency’s regulations, so check the current figures on the official site.