Commercial: Management of Wastewater
Introduction
In this section you will find information on industrial discharge licencing.
Section 16 Licence to Discharge to Sewer
Discharge licences in respect of the discharge of trade effluent to sewers are issued under Section 16 of the Local Government ( Water Pollution ) Act 1977, as amended.
In accordance with the provisions of the Water Services ( No.2) Act 2013, Section 16 discharge licences are issued by Uisce Éireann.
Information and application forms for a Trade Effluent Licence can be accessed at the Uisce Éireann website www.water.ie/tradeeffluent.
Uisce Éireann can also be contacted at 0818 778 778.
Section 4 Licence to Discharge to Waters
Discharge licences are issued under Section 4 of the Local Government (Water Pollution) Act 1977, as amended in 1990, in respect of the discharge of trade effluent to surface water or groundwater.
Licences set conditions so that discharges are treated and controlled in a manner that protects the receiving environment.
An effluent discharge licence under Section 4 of the Local Government (Water Pollution) Act, 1977, as amended is required for:
- Discharges of effluent directly to surface waters, whether domestic or commercial/industrial
- Commercial/industrial discharges to groundwaters (including via a percolation area) and domestic effluent discharges which are greater than 5m3/day.
Note: A Section 4 licence is not required for domestic sewage which does not exceed a volume of 5m3 in any period of 24 hours which is discharged to groundwaters from a septic tank or wastewater treatment plant by means of a percolation area.
Large industrial or agricultural activities may require an Integrated Pollution Control Licence from the Environmental Protection Agency. Details of the classes of activities which require an Integrated Pollution Control Licence are available at the EPA website – www.epa.ie
Failure to comply with the terms and conditions of a Discharge Licence is an offence under the Local Government (Water Pollution) Act 1977, as amended.
Information and application forms for a Section 4 Licence to discharge to waters or groundwater can be found at https://kildarecoco.ie/Forms/Environment/





