Protect Our Water – Septic Tank Registration

The system for registration of  septic tanks and all other domestic waste treatment systems in Ireland has been in place since July 2012.

The original deadline for registration and payment  was 1st February 2013 and there is  a fee of €50. Registrations are still being accepted – and it is a prosecutable offence not to register.
The latest figures from the Dept of the Environment are that  445,934 out of an estimated 497,281 systemshave been registered (June 2013) . That is about 90%

Grants may  be available if  a system fails inspection and was registered before 1st Feb – read more here about Septic Tank Grants
Inspections are due to begin in the summer of 2013 – and should be starting soon.

 Who has to Register?

All  Domestic wastewater treatment systems have to be registered by the property owners  – not just septic tanks.
Domestic wastewater treatment systems include septic tanks, waste water tanks, and treatment systems receiving, storing, treating or disposing of domestic waste water. It also includes all fittings and percolation areas associated with such tanks and systems and drains used to discharge waste water from a premises, whether or not a receiving tank is present.

Basically – if you own a  premises that  is not connected to the mains sewerage system you will need to register.

You can register online at the  website – and pay by credit card or debit card. If you own an unoccupied house – it still needs to be registered. Tenants do not need to register – just property owners.

You will be asked for your  MPRN number to register – this is the Electricity Meter Point Reference Number on your ESB or Electricity bill. (It is optional)

You can also register and pay at Local Authority Offices  where you can pay by cash , credit or debit card , cheque, postal order or  bank draft .

Printable Registration Form  available here

Irish Printable Version Here

Registration forms should also be available from  Libraries; Citizen Information Centres or by calling  1890 800 800.

You can call  from outside Ireland on   00353-1-2224000.

Forms  can be sent in the post along with payment  by cheque, postal order or bank draft made payable to “Protect Our Water”.
Registration forms need to be returned  : Protect Our Water, P.O Box 12204, Dublin 7.

There are no exemptions.  Where an owner is unable to register, for example due to physical or mental incapacity, registration on their behalf should be made by the next-of-kin, legal representative or other authorised or appropriate person.

If you share a single treatment system with other properties – all the property owners still have to register.

Owners of properties connected to larger on-site systems which discharge in excess of 5 cubic metres per day do not need to register. Such systems, which serve sports clubs, pubs, hotels, guesthouses and other businesses already require a licence from the relevant local authority under Section 4 of the Water Pollution Act 1997.

More info on Septic Tank Charges Here

84 thoughts on “Protect Our Water – Septic Tank Registration

    • Brid – when the grants were announced they just said you had to register by the 1st – so you should be OK .

  1. can i still send payment now. ? 11th feb. also friend has owned a house here for 2 years, but only moved in on sunday. shall i send his payment too ?

  2. I went to pay my reg fee monday 11th feb
    was told due to late payment i wouldnt get a grant if i needed to upgrade my tank
    I was out off the country at the end of jan-early feb and forgot about the 1st feb deadline
    whats my chances of geting the grant if i need a upgrade

    • Peter – I doubt if they will change the rules on this. They will say that people had since June 2012 to register.

  3. I paid septic water charge for my parents on line when I was registering my own property however I am now registered as the owner of their property according to your correspondence. what do I do about this?

    • Caren – you need to get in touch with the people at

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