As a general rule, only one connection will be allowable for one single property, premise or building with a single ownership title. However, multiple connections may be authorized after Diam written approval and only for specific situations, such as buildings with more than one staircase, industrial sites, etc.
Our customers’ categories eligible to a new connection are:
If decided to build house or building, you may get a temporary connection. Prepare the following documents to be given to any Diam branch Office by the owner (mandatory) and his contractor:
To complete your request visit your nearest branch. Our branches
If you want a permanent connection to Diam network, you have to produce the below documents to your nearest branch. Our branches:
Once your request is recorded, you will receive automatically a SMS with your “ticket number”. A survey will be undertaken by our technical team in order to:
Our Diam Call Centre (1442) will contact you within 10 days after the date of submission of your request to inform you on the decision related to your request.
Our technical team will contact you to offer you 3 quotations for the connection works. You may have the possibility to pick another contractor if it is registered with Diam. The Contractor you have chosen will have to come to Diam to pay the service charge fee based on your meter size. The connection works are at your own charge and have to be paid directly by yourself. Once the payment is done a ticket will be open to launch the connection works which should be finalized.
To change the type of connection from temporary to permanent, the customer has to come to the Branch Office and present the certificate delivered by the Municipality confirming the completion of the house. If there are no unpaid bills, the Customer Service Front Office agent will change the tariff (from commercial tariff (3 baizas) to his new customer category tariff.
As the owner of the house linked to the public network, you may need to stop the service for a certain period for personal purpose. To be disconnected from the service, please prepare the following documents:
Visit one of our Customer Service Branch Offices to fill in the "Request for Service Disconnection Form" and proceed to the payment fee (currently 30 OMR).
Once you want to get back the water supply service, you may proceed with the same procedure as in request a disconnection. The reconnection fee is also charged at 30 OMR.
Your water service may be disconnected by OIFC or ONEIC for non-payment. Ensure that you regularly pay your bills. Even if you do not receive it, you are responsible for the payment for your own consumption.
If you contest the disconnection or if it is delayed, you may contact directly OIFC or ONEIC.For more details visit their websites:
There is currently no fee incurred for disconnection and reconnection done by OIFC and ONEIC. However a charged may be applied if the disconnection has to be done by Diam at the main line. The fee is 30 OMR to disconnect and 30 OMR to reconnect.
As soon as your connection is operational, the data of your customer account and meter have been sent to our Agency (OIFC if you live in Muscat Governorate or to ONEIC if you live elsewhere in Oman). OIFC or ONEIC will organize the reading of your meter every 30 days at the same date and will send you your bill with the sewerage service charge if you are connected to the network managed by Haya Water.
If you are the owner of the premises which is connected to the Diam network you may request to update these data for the following reasons:
In the cases mentioned above, we invite you to visit one of our Customer Service Branch Offices with the relevant documents: National ID Card, municipality documents, mulkeya, etc. Please contact our Call Centre 1442 for more details.
Click here to find the nearest branch. Our branches
You may terminate your contract at any moment, on your written request, under the following conditions:
Diam may decide to terminate a contract for different reasons detailed in the Diam's Regulations (By-Law).
Until the contract termination, you remain liable for any event related to the connection in which his responsibility may be determined.
For more details related to your bill or customer account, contact our Call Centre at 1442 or go to your nearest branch. Click here to find the nearest branch. Our branches
Diam provides a bill which is a simplified monthly invoice detailing the information for billing of water and sewage services.
Here are some guidelines to facilitate understanding your bill:
Your consumption of water is divided into slices corresponding to specific rates. Rates vary from one slice to another. The more you consume, the more expensive the price.
Consumption brackets are detailed in the table below:
As a private customer, you have to pay your bill to one of OIFC or ONEIC branches. For more details visit their websites:
The deadline(as Due Date) for payment is indicated on your invoice. Beyond that date, the default will result in suspension of water supplies.
In case of high bill consumption, Diam advises you to:
If you need to relocate your meter from inside to outside your property, from ground to wall, from one place to another more convenient place, we invite you to visit one of our branches and ask for meter relocation with your ID card, if you are the owner, or with a letter signed by the owner, if you are a tenant. A “Ticket” will be open to launch a survey. If the survey is positive (if relocation is possible), the works will be done by one of the specialist contractors registered with Diam. No specific fee is required.
For technical reasons such as meter reading not possible because the meter is underground, Diam may relocate your meter. The works will be done free of charge.
Your meter may be damaged. Visit your nearest branch (), as soon as possible, and ask for a meter replacement with the evidence of the damage(a photograph). A survey will be done by our technical team to identify the reason of this damage, the meter will be replaced and your billing account adjusted according to the procedure.
For more details related to your meter, contact our Call Centre at 1442 or go to your nearest branch. Click here to find the nearest branch. Our branches