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Vulnerability of Ireland’s drinking water supplies must be urgently addressed by Irish Water, says EPA

The EPA Drinking Water Quality in Public Supplies Report 2020 released today, shows that the quality of drinking water in public supplies remains high, with over 99.7% compliance with bacterial and chemical limits. The continued high levels of water quality being achieved are positive for consumers and indicate that the water is safe to drink. However, improvements are needed in our drinking water infrastructure to protect public health. Delays in the delivery of these improvements at water treatment plants by Irish Water means that water supplies remain vulnerable for longer, posing a risk to the health of a large portion of the population.

The EPA’s Remedial Action List identified 46 vulnerable supplies (serving >1,000,000 consumers) with significant issues to be addressed by Irish Water at the end of 2020. This figure is down from 77 supplies in 2017. Through EPA targeted enforcement, Leixlip has since been removed from the list, after works there resulted in a more secure water supply for over half a million people. However, improvement works at almost half of these supplies will now take longer to complete than was anticipated at the end of 2019.

EPA’s Senior Inspector, Dr. Michelle Minihan, summarises the key findings of our ‘Drinking Water Quality in Public Supplies Report 2020’. Read the report here: https://t.co/bETt3brdvL #EPAoee https://t.co/jiKDTMnNcu
— EPA Ireland (@EPAIreland) December 15, 2021

“It is good news that our water is safe to drink today, but we cannot say with confidence that it is resilient into the future. The EPA remains concerned about the vulnerability of many drinking water supplies nationally. Irish Water needs to fix the remaining supplies on the EPA’s Remedial Action List without further delay. Recent incidents at Gorey and Ballymore Eustace water treatment plants have highlighted the absolute necessity for Irish Water to ensure our public water supplies are properly and effectively operated, and managed, to protect public health.”
Dr Tom Ryan, EPA Director

The EPA has also found deficiencies in the national disinfection programme, and a continued lack of focus by Irish Water and the Department of Housing, Local Government and Heritage on plans to remove lead from supply connections and assessments of the extent of lead pipework in public buildings on lead in public buildings.

“15,500 consumers were on Boil water notices for over a month in 2020, and 145,000 households still have lead connections from water mains, which highlights the vulnerabilities that exist in drinking water supplies.
Irish Water must expedite lead connection replacements and progress improvements to disinfection systems – including addressing the issues with the disinfection programme identified by the EPA – to ensure that the quality of drinking water is adequately safeguarded.”
Noel Byrne, EPA Programme Manager

The EPA Drinking Water Quality in Public Supplies 2020 Report and the complete list of public water supplies currently on the Remedial Action List – including details of the proposed remedial measures and associated timeframes – are available on the EPA website.

Notes

Some key findings of the 2020 report on public water supplies:

99.96 per cent of samples comply with microbiological parameter limits.
99.71 per cent of samples comply with chemical parameter limits.
46 supplies were on the EPA’s Remedial Action List at the end of 2020, compared to 77 at the end of 2019.
43 boil water notices and 17 water restrictions were in place in 2020, affecting almost 80,000 people.
27 of those boil water notices were in place for more than 30 days, meaning they are classed as long-term notices requiring investment in infrastructure to address.
coli bacteria was detected in three supplies, compared to eight supplies in 2019.
Trihalomethanes limits were exceeded in 35 supplies, compared to 46 in 2019.
Pesticides limits were exceeded in 33 supplies, compared to 27 in 2019.
The EPA issued five Directions (legally binding instructions) to Irish Water in 2020.

The EPA has identified the following priorities for Irish Water to address on a national level to protect and improve public water supplies:

Progressing action programmes for all Remedial Action List schemes;
Ensure that water is free of bacteria;
Ensure that water is free of protozoan organisms;
Ensure that water is free of chemical substances (trihalomethanes and pesticides);
Ensure that water treatment plants are operated correctly;
Eliminating lead from our drinking water networks;
Managing risks to our public water supplies by adopting Drinking Water Safety Plans for all supplies.

List of supplies on the Remedial Action List at the end of 2020***

County	Supply	Population	County	Supply	Population
Cavan	Bailieborough	7785	Limerick	Foynes/Shannon Estuary	7,023
Cavan	Belturbet	1926	Limerick	Fedamore	492
Cavan	Shercock	712	Limerick	Newcastle West	9,448
Cavan	Dowra PWS	92	Longford	Gowna*	4,359
Clare	Corofin	1,276	Longford	Granard*	2,598
Clare	Ennistymon	6,961	Longford	Longford Central	16,729
Clare	West Clare (New WTP)	11,236	Louth	Greenmount	4,814
Cork	Glashaboy	22,808	Louth	Tallanstown	1,978
Cork	Glengarriff*	353	Mayo	Newport PWS	684
Cork	Leap	497	Meath	Drumcondrath	1,182
Cork	Schull	946	Meath	Navan & Mid-Meath**	38,985
Cork City	Cork City Water Supply	87,114	Offaly	Clara/Ferbane RWSS	7,467
Donegal	Ballymagroarty	756	Tipperary	Clonmel-Poulavanogue	2,596
Donegal	Glenties-Ardara	3,536	Tipperary	Galtee Regional	11,436
Dun Laoghaire- Rathdown	Roundwood	42,106	Waterford	Dungarvan	11,472
Fingal	Leixlip*	590,167	Wexford	Clonroche	522
Kerry	Ballyheigue	2,466	Wicklow	Aughrim / Annacurra	1,594
Kerry	Cahersiveen	1,370	Wicklow	Enniskerry Public Supply	2,667
Kerry	Caragh Lake	1,899	Wicklow	Wicklow Regional Public Supply	15,598
Kerry	Mountain Stage	840	Wicklow	Bray	28,934
Kilkenny	Kilkenny City (Radestown)	14,441	Wicklow	Greystones/Windgates/ Templecarraig	16,380
Kilkenny	Pilltown-Fiddown	2,955	Wicklow	Kilmacanogue	1,237
Laois	Abbeyleix 1	1,836	Wicklow	Newtown Newcastle Kilcoole	12,724

*Supply was removed from the RAL during 2021

**Navan Mid Meath supply was split into Liscarton and Kilcarn suuplies; Liscarton was removed from RAL during 2021 and Kilcarn remains on RAL

***The following supplies were added to the RAL in 2021 – Whitegate Regional, Kilgarvan, Borrisokane, Ballymorris, Clare Island, Burncourt Ballylooby, Nenagh Regional, Carlow North Regional, West Clare (old) WTP, Kereen, Louisburgh, Callan, Ballymahon and Batterstown.

List of the supplies currently on a Boil Water Notice or Water Restriction (on 14/12/2021)

County	Name of Supply	Population Affected
Cork	Knockadoon	27
Cork	Macroom	4,148
Cork	Whiddy Island	30
Kerry	Aughacasla	353
Limerick	Fedamore PWS	492
Limerick	Foynes/Shannon Estuary PWS	500
Meath	Baltrasna	9
Meath	Batterstown	96
Meath	St Louis, National School, Rathkenny	48
Tipperary	Clonmel Poulavanogue	96
Tipperary	Galtee Regional	192
Tipperary	Tipperary Town	4,818
Waterford	Ballydermody	2
Waterford	Ballyknock	11
Waterford	Kereen	28
Wexford	Ballinavarry	10
Wicklow	Ballymorris Public Supply	17
Wicklow	Johnstown South (Arklow)	6
TOTAL		10,883

About author

EPA Catchments Unit

Administrator

The EPA Catchments Unit is based in Dublin, and the team is involved with catchment science, chemistry, ecology, hydromorphology, modelling, Geographic Information Systems and planning. We work with the wider EPA, all of our local authorities, the Local Authority Waters and Communities Office, the Department of Housing, Planning and Local Government, and other public bodies and Departments to ensure we have the best available data and information about our catchments.

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