Protect Our Water - Register Wastewater Treatment System

Registration of DOMESTIC waste water treatment systems (including septic tanks) commences this week  


By protecting our water, we protect our environment, our health and our jobs

Protect Our Water (English) Application Form | Protect Our Water (Irish) registration Form | Protect Our Water Information Leaflet

Owners of domestic waste water treatment systems are required to register their systems with their water services authority - currently the local authority. A registration fee €50 applies.  Owners need to renew their registration every five years, at no cost.

Having a register of domestic water treatment systems and septic tanks enables inspections to check that systems are working properly so that water – ground, surface and drinking water - can be protected from the risks posed by malfunctioning systems. This initiative will ultimately enhance and protect public health and the environment which will, in turn, benefit rural dwellers in terms of a better quality of life and improved water quality.

How to register?

You can register and pay on-line as follows:

1. Online at -

2. In person in the following Local Authority Offices in County Louth where payment can be made by cash, cheque, money order or debit / credit card:-

  • Louth County Council, County Hall, Millennium Centre, Dundalk
  • Louth County Council, Crowe Street, Dundalk
  • Louth County Council, Fair Street Drogheda
  • Louth County Council, Fair Green, Ardee


3. By post - application forms can be collected at the above local authority offices, in public libraries and Citizens Information Centres and sent by post with the registration fee to Protect our Water, PO Box 12204, Dublin 7.  Please DO NOT send cash by post. Protect Our Water (English) Application Form | Protect Our Water (Irish) registration Form


Protect Our Water information leaflet(size 78.6 KB)

The water services (amendment) act 2012 introduces a new registration and inspection system for septic tanks and other domestic waste water treatment systems in Ireland. 

Registration will be valid for five years and there will be no charge for re-registration. It is intended that the revenue raised will be used by the water services authorities to manage the registers and to meet the cost of having inspections carried out.  There will be no inspection charges for  households. All owners of premises connected to a domestic wastewater treatment system are required to register their systems by 1 February 2013.

How to tell if there is a problem with your system?

Some of the signs that your system may not be operating correctly are:

  • There are foul odours around the system or the percolation area;
  • There is an excessive amount of vegetation growing in the percolation area;
  • The area around the system or percolation area is soggy;
  • Your drains or toilets are running slowly or overflowing.


It will be a matter for the Environmental Protection Agency (EPA) to determine the level of inspections that will be required. However, as it is to be a risk-based scheme, not every system will be inspected.  In developing the inspection plan, the EPA will consider many factors, including proximity to rivers, lakes and streams (particularly drinking water sources). 

Important message regarding inspections:

Inspections under the new system will commence in 2013.  The commencement of inspections will be publicised in the national and local media. People should take care not to allow uninvited persons, or persons claiming to be inspectors, to enter onto their property in advance of the launch of inspections. People will be formally notified by their local authority if their domestic waste water treatment system is to be inspected.  Inspectors will be required to carry identification and you should ask for this to be presented to you.