Many knowledge gaps exist in relation to managing priority substances and priority hazardous substances in Irish waters. This information is needed to enable compliance with WFD reporting requirements. This collaborative analytical project sought to establish emission factors for priority substances, identifying index or risk-based criteria that will assist in defining the monitoring programme in Ireland for WFD. The project involved a large sample number (492) to obtain a representative and statistically relevant output. A risk-based model of expected pollutants was developed based on inputs to municipal wastewater treatment plants (WWTPs) from a variety of sources with a variety of population equivalents. Notably this project focussed on wastewater facilities however, the impact of non-licensed sources like golf-courses, hospitals, airports, restaurants etc, on PSs arising from rainfall run-off can also be significant it was found.

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Regan, F.   "Monitoring Criteria for Priority Chemicals leading to emission factors". Associated datasets and digitial information objects connected to this resource are available at: Secure Archive For Environmental Research Data (SAFER) managed by Environmental Protection Agency Ireland https://eparesearch.epa.ie/safer/resource?id=c044369e-a745-11e2-9085-005056ae0019 (Last Accessed: 2025-01-24)

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SAFER-Data Display URL	https://eparesearch.epa.ie/safer/iso19115/display?isoID=3004
Resource Keywords	Priority substances, wastewater, licensed sources, unlicensed sources,
EPA/ERTDI/STRIVE Project Code	2007-WQ-LS-1-S1
EPA/ERTDI/STRIVE Project Theme	Water Quality
Resource Availability:	Public-Open
Limitations on the use of this Resource	Any attached datasets, data files, or information objects can be downloaded for further use in scientific applications under the condition that the source is properly quoted and cited in published papers, journals, websites, presentations, books, etc. Before downloading, users must agree to the "Conditions of Download and Access" from SAFER-Data. These appear before download. Users of the data should also communicate with the original authors/owners of this resource if they are uncertain about any aspect of the data or information provided before further usage.
Number of Attached Files (Publicly and Openly Available for Download):	4
Project Start Date	Monday 1st October 2007 (01-10-2007)
Earliest Recorded Date within any attached datasets or digital objects	Monday 1st October 2007 (01-10-2007)
Most Recent Recorded Date within any attached datasets or digital objects	Thursday 1st December 2011 (01-12-2011)
Published on SAFER	Wednesday 17th April 2013 (17-04-2013)
Date of Last Edit	Monday 24th February 2014 at 09:22:48 (24-02-2014)
Datasets or Files Updated On	Monday 24th February 2014 at 09:22:48 (24-02-2014)

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Description of Geographical Characteristics of This Project or Dataset
The project involved a large sample number (492) to obtain a representative and statistically relevant output. The team collected samples and analysed for 33 PSs as well as collated available environmental and water quality data from a range of wastewater treatment plants (n = 9) over a 3-year sampling period. Samples were collected monthly throughout the project and also at higher frequency during wet and dry periods. A risk-based model of expected pollutants was developed based on inputs to municipal wastewater treatment plants (WWTPs) from a variety of sources with a variety of population equivalents (PEs). Notably this project focused on wastewater facilities, although, however, it was found that the impact of other sources, such as golf courses, hospitals, airports, restaurants, etc., on PSs arising from rainfall run-off can also be significant.

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The following is a list of similiar projects and resources on SAFER. Usually these resources share a similiar thematic area to the resource Monitoring Criteria for Priority Chemicals leading to emission factors you are currently viewing. You can view the full description for these projects and resources by using the links supplied.

• Drinking Water Monitoring Results and Water Supply Details for Ireland - Year 2021 View Full Metadata Description
• Review of groundwater levels in the south east highlights importance of groundwater level monitoring for the future View Full Metadata Description
• Pathways Project: Assessing, modelling and managing water and contaminant movement along pathways (underground and over-ground) from the land surface to aquatic receptors, including the roles of contaminant transport and attenuation. View Full Metadata Description
• Drinking Water Monitoring Results and Water Supply Details for Ireland - Year 2019 View Full Metadata Description
• Eutrophication from Agricultural Sources : Phosphorus Dynamics in Grazed Grassland View Full Metadata Description

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