Colligan Mahon Water Management Unit Action Plan NameColligan Mahon Water Management Unit Area641 km 2 River Basin District South Eastern RBD Main CountiesWaterford Protected Areas Helvick Head SAC, Tramore Dunes and Backstrand SAC, Comeragh Mountains SAC, Ardmore Head SAC, Glendine Wood SAC. Dungarvan Harbour SPA, Helvick Head Coast SPA, Tramore Back Strand SPA. 6 drinking water surface abstractions from Glendine River, Mahon River (2), Ballyvadden Stream, Tay River and Belle Lake. 6 Bathing water - Dunmore East (Counsellors Strand), Bonmahon, Ardmore, Tramore (Main Strand), Dunmore East (Main Strand) and Clonea East. 2 Shellfish water - Waterford Harbour and Dungarvan Harbour.

Colligan Mahon Water Management Unit Action Plan STATUS/IMPACTS Overall status41 RWB - 4 high, 23 good, 12 moderate, 2 poor. There are 2 lake water bodies in this WMU; Ballinlough is good status and extrapolated, Belle Lake is moderate status and monitored. 3 Transitional WBs; Brickey Estuary, Colligan Estuary and Mahon Estuary. 5 Coastal WBs border WMU; Waterford Harbour, Dungarvan Harbour, Eastern Celtic Sea, Tramore Bay, Tramore Back Strand– Refer to Transitional and Coastal Action Plan for SERBD. Status elements Q score dictates overall status for river WBs that are less than good. Phys Chemical fails in 1 moderate WB. Chemical Status is monitored in 2 water bodies (Colligan and Mahon main channels) and passes. Status for 24 WBs is extrapolated (13 good, 10 moderate,1 high). Belle Lake status is dictated by Chlorophyll, Nutrients - Total Phosphorus. Possible Impacts - EPA Water Quality 2004 BRICKEY - (SE_17_834, Status Good based on PhysChem not Q score) Reversion to moderately polluted conditions following transitory amelioration in 2004 at the only location examined (Knockmahon Bridge). (Q score 3-4) COLLIGAN - (SE_17_832, Status Good) Continuing satisfactory throughout. (Based on Q score 4-5) DALLIGAN - (SE_17_662, Status Good based on PhysChem not Q score) Continuing satisfactory throughout. (Q score 4-5) DUNHILL - (SE_17_647, Status Moderate) Continuing slightly polluted at Ballyphilip Bridge (0100). Also known as Annestown Stream. (Based on Q score 3-4) LEPERSTOWN STREAM - (SE_17_284, Status Poor) Continuing moderately polluted at Bridge West of Leperstown (Aughanodrish Bridge). (Based on Q score 3) MAHON - (SE_17_825, Status Moderate) Satisfactory except downstream of Kilmacthomas (0200) where again slightly polluted. (Based on Q score 3-4) MORRAGEN - (SE_17_564 and SE_17_566, Status Moderate and Good respectively) Amelioration to satisfactory conditions in In 2004 this location. (Kilnagrange Bridge) was less than satisfactory for the first time since biological sampling began (Based on Q score 3-4) PRESSURES/RISKS Nutrient sources Most TP is diffuse (82%) mainly from agriculture (71%), unsewered properties (10%) and WWTP (14%). Point pressures 16 WWTPs: Annestown, Ballinroad, Dungarvan, Dunhill W, Kill, Kilmacthomas, Lemybrien, Moanfune, Stradbally, Ardmore, Ring/Helvick/Ball, Tramore, Bonmahon, Dunmore East, Passage East, Crooke 12 Section 4s: Livestock Marketer, 6 Private Companies, Rural Development Company, Holiday Cottages/Restaurant, Housing Association, Public House, Hotel. 4 IPPC – Engineering, Joinery Company, 2 Private Companies. 4 Surface WTP - Dunmore East, Ballylaneen, Ballyvadden, and Stradbally WTPs. Wastewater Treatment Plants (WWTP) and Industrial Discharges At risk: Ballinroad WWTP - Proposed decommissioning of existing WWTP into Dungarvan Scheme. Dunhill WWTP - No risks Kilmacthomas WWTP Lemybrien WWTP - No risks Stradbally WWTP Section 4s - No risks identified. Quarries, Mines & Landfills There are 7 Quarries. There are two landfills within the WMU, at Tramore and Dungarvan. Both are now closed. There are no mines within the WMU. Agriculture There are 25 waterbodies at risk from agriculture within the WMU: SE_17_22, SE_17_834, SE_17_823, SE_17_47, SE_17_276, SE_17_303, SE_17_151, SE_17_292, SE_17_294, SE_17_439, SE_17_138, SE_17_532, SE_17_547, SE_17_564, SE_17_305, SE_17_566, SE_17_650, SE_17_665, SE_17_642, SE_17_586, SE_17_726, SE_17_787, SE_17_284, SE_17_825, SE_17_647 On-site systems There are 6466 septic tanks in this WMU, none of them are posing a risk to water quality due to their density, location and unsuitable hydrogeological conditions. ForestryThere is one waterbody at risk from forestry within the WMU: SE_17_834. Dangerous substances There are no waterbodies at risk from dangerous substances within the WMU. MorphologyThere is one waterbody at risk from morphology (channelisation) within the WMU: SE_17_22 - River Brickey Arterial Drainage Scheme AbstractionsThere are 4 waterbodies at risk from abstraction within the WMU: SE_17_284, SE_17_825, SE_17_303 and SE_17_305. OtherDunmore East Sewerage Scheme proposed. Dungarvan Ardmore, Ring/Helvick and Kilmacthomas have all been identified for Water Supply Schemes. River StatusLake Status High Good Moderate Poor Bad Yet to be determined

Colligan Mahon Water Management Unit Action Plan SELECTED ACTION PROGRAMME NB All relevant basic measures, general supplementary measures and SEA mitigation measures apply Point Sources See Point Source Discharge Table for WWTP at risk to the right. Also: Lemybrien WWTP - Upgrade may be required to allow for future capacity. INDUSTRY – Examine the terms of all discharge authorisations to determine whether they require review for the purpose of compliance with water body objectives including protected area objectives and environmental quality standards. Diffuse Sources AGRICULTURE – Good Agricultural Practice Regulations and Enforcement. Other FORESTRY - Measures to address acidification apply to SE_17_834. MORPHOLOGY - SE_17_22 will require investigation to determine impact of channelisation. OTHER: Protection of drinking water, abstraction control and future licensing. Shellfish Pollution Reduction Programmes under the shellfish directive OBJECTIVES Restore/Protect River water bodies and 2 lake water bodies Alternative Objectives Extended Deadlines – 4 river water bodies with 2021 deadline New Modifications or Development – none requiring alternative objectives at present. HMWB/AWB - none FUTURE DEVELOPMENT Future Pressures and Developments Throughout the river basin management cycle future pressures and developments will need to be managed to ensure compliance with the objectives of the Water Framework Directive and the Programme of Measures will need to be developed to ensure issues associated with these new pressures are addressed.

River Data Colligan Mahon Water Management Unit Action Plan These tables outline water body information including status and a breakdown of its elements, protected areas, objectives and timescales.

Colligan Mahon Water Management Unit Action Plan Lake Data