WaterCheck Ireland

Aluminium in Drinking Water in Ireland

Explore EPA Ireland monitoring records, listed exceedances and historical trends for Aluminium in public drinking-water supplies across Ireland.

Aluminium is an indicator parameter in drinking water.

Latest monitoring year
2025
Page updated
September 2026
Data available
2021, 2022, 2023, 2024, 2025
6,578Monitoring results
6,578Samples
704Water supplies monitored
29EPA-listed exceedances

These are historical public-supply monitoring records, not a current water notice or a test of every household. Sampling locations can be outside the linked towns.

What do the latest results show?

The latest year is 2025. Results and listed exceedances are counted separately from their respective datasets.

  1. In 2025, 6,578 Aluminium monitoring results were recorded from 6,578 samples across 704 public water supplies.
  2. The separate EPA exceedance dataset lists 29 records across 21 schemes in 2025.
  3. There were 434 more monitoring results than in 2024 (7.1% more). This describes the volume of monitoring, not a change in water quality.

Aluminium monitoring and the indicator value

Recorded results for 2025, with official requirements shown separately.

Irish drinking-water requirement

200 µg/l

Indicator value under Schedule 1 Table C.

This is separate guidance, not a test result for your own water. It does not reclassify historical records.

Official guidance checked 14 Sep 2026.

Monitoring coverage · 2025

Numeric measurements
5,209
EPA-listed exceedances
29
Water supplies monitored
704
First sample
02 Jan 2025
Latest sample
19 Dec 2025

These are historical records, not the current status of your water. EPA-listed exceedances come from a separate dataset.

The aluminium indicator value is shown alongside monitoring coverage. A listed record is not used to diagnose the treatment process or the condition of a particular tap.

Monitoring measurement units are not verified, so these recorded values cannot be compared with the official standard. Units in the listed exceedance table are reproduced separately from that source.

How to read these results

Measurement coverage · 2021–2025

The imported monitoring records have no unit field. These are counts of recorded values, not concentrations or a comparison with the standard.

25,720 numeric records; 5,968 censored text records; 5 other text-only records; 139 records without a result value.

21,319 records have a non-empty text field, including records that also have a numeric value. This overlapping field count must not be added to the numeric total.

Result representation by year
YearNumericNon-empty text fieldCensored textOther text onlyNo result value
20215,3124,3301,058314
20225,5134,3821,00804
20235,0314,1001,127040
20244,6554,1221,422265
20255,2094,3851,353016

Across this period, 31,832 results from 31,832 samples cover 741 distinct water supplies. Sample dates run from 04 Jan 2021 to 19 Dec 2025.

20256,578 results · 29 listed exceedances · 704 schemes monitored
Monitoring results — independent scale
03,2896,578 6,387 2021 6,525 2022 6,198 2023 6,144 2024 6,578 2025
6,387
2021
6,525
2022
6,198
2023
6,144
2024
6,578
2025
EPA-listed exceedance records — independent scale
030.561 61 2021 32 2022 37 2023 24 2024 29 2025
61
2021
32
2022
37
2023
24
2024
29
2025

These are record counts, not an official EPA compliance rate. The number and selection of samples and monitored schemes can change between years.

There were 434 more monitoring results than in 2024 (7.1% more). This describes the volume of monitoring, not a change in water quality.

Aluminium monitoring, 2021–2025
YearResultsSamplesSchemes monitoredListed exceedancesSchemes with listed exceedances
20216,3876,3876396139
20226,5256,5256303223
20236,1986,1986443729
20246,1446,1446622419
20256,5786,5787042921

EPA-listed Aluminium exceedances

183 listed records across 79 distinct schemes, 2021–2025. These are historical sample records, not a current assessment of each property in a supply zone.

Results and limits below are reproduced from the separate EPA exceedance dataset, with its own reported units. These units are not assigned to the wider monitoring dataset.

Listed exceedances by year and reported unit/limit pair
YearRecordsSchemesLowest listed resultHighest listed resultReported unitReported limit
202161392021,330ug/l200
202232232022,210ug/l200
202337292011,719ug/l200
20242419205953ug/l200
202529212062,240ug/l200
Show all 183 listed records 2021–2025 · newest first
All EPA-listed Aluminium exceedances in the reporting period
DateResultReported unitReported limitWater supply schemeScheme code
12 Dec 2025238ug/l200Gowna0200PUB0112
10 Dec 2025736ug/l200Ardfinnan Regional2900PUB0102
08 Dec 2025376ug/l200Ardfinnan Regional2900PUB0102
28 Nov 2025486ug/l200Newport PWS2200PUB1022
25 Nov 2025428ug/l200Poulaphouca Regional1400PUB1023
09 Oct 2025587ug/l200Gowna0200PUB0112
29 Sep 2025575ug/l200DONEGAL(RIVER ESKE)0600PUB1098
22 Sep 2025296ug/l200Midleton0500PUB2406
15 Sep 2025209ug/l200Ballinasloe Public Supply1200PUB1004
05 Aug 2025272ug/l200Limerick City Environs PWS1900PUB1032
25 Jul 2025226ug/l200East Waterford Water Supply Scheme3800PUB1110
24 Jul 2025383ug/l200Mullingar Regional3200PUB1005
23 Jul 2025356ug/l200East Waterford Water Supply Scheme3800PUB1110
22 Jul 2025946ug/l200East Waterford Water Supply Scheme3800PUB1110
22 Jul 2025646ug/l200East Waterford Water Supply Scheme3800PUB1110
14 Jul 2025402ug/l200FROSSES-INVER0600PUB1096
08 Jul 2025407ug/l200Dowra PWS0200PUB0111
23 Apr 2025264ug/l200Inisboffin PWS1200PUB1024
22 Apr 2025252ug/l200Foynes/Shannon Estuary PWS1900PUB1027
17 Apr 2025217ug/l200Owenteskna0600PUB1129
01 Apr 2025257ug/l200East Waterford Water Supply Scheme3800PUB1110
19 Mar 2025206ug/l200Owenteskna0600PUB1129
18 Mar 20252,240ug/l200CARRIGART-DOWNINGS0600PUB1044
18 Mar 2025589ug/l200Cranford Carrigart Downings Mixed Supply0600PUB1134
10 Mar 2025213ug/l200North East Regional PWS2600PUB1030
04 Feb 2025243ug/l200SRRWSS - Killeglan2600PUB1004
16 Jan 2025237ug/l200Killeshandra PWS0200PUB0113
13 Jan 2025553ug/l200Bailieboro RWSS0200PUB0102
13 Jan 2025243ug/l200North East Regional PWS2600PUB1030
05 Nov 2024290ug/l200Macroom0500PUB2307
21 Oct 2024205ug/l200An Daingean PWS 030D1300PUB1034
07 Oct 2024317ug/l200Conna Regional0500PUB1204
07 Oct 2024276ug/l200Leixlip Regional1400PUB1019
01 Oct 2024247.6ug/l200Macroom0500PUB2307
27 Aug 2024407ug/l200Inch PWS 044D1300PUB1040
13 Aug 2024237ug/l200SRRWSS - Killeglan2600PUB1004
27 May 2024411ug/l200Dowra PWS0200PUB0111
23 May 2024319ug/l200Gowna0200PUB0112
20 May 2024584ug/l200Lough Mask Westport Town Mixed Supply2200PUB1039
12 Apr 2024205ug/l200Owenteskna0600PUB1129
14 Mar 2024953ug/l200Limerick City Environs PWS1900PUB1032
08 Mar 2024680ug/l200Greenmount2100PUB1002
05 Mar 2024214ug/l200SRRWSS - Killeglan2600PUB1004
27 Feb 2024501ug/l200Killadysert PWS0300PUB1008
26 Feb 2024289ug/l200An Daingean PWS 030D1300PUB1034
19 Feb 2024207ug/l200Kenmare PWS 045A1300PUB1058
16 Feb 2024479ug/l200Ardee2100PUB1001
12 Feb 2024255ug/l200Owenteskna0600PUB1129
06 Feb 2024278ug/l200Roscommon Central Water Supply Scheme2600PUB1002
18 Jan 2024295ug/l200LETTERMACAWARD0600PUB1069
09 Jan 2024350ug/l200Killadysert PWS0300PUB1008
04 Jan 2024238ug/l200Kinvara PWS1200PUB1034
02 Jan 2024220ug/l200Cavan RWSS0200PUB0100
19 Dec 2023557ug/l200Kinvara PWS1200PUB1034
11 Dec 2023201ug/l200Killadysert PWS0300PUB1008
08 Dec 2023205ug/l200Kilsellagh Public Water Supply2700PUB2706
06 Dec 2023215ug/l200Ardee2100PUB1001
05 Dec 2023221ug/l200Macroom0500PUB2307
20 Nov 2023226ug/l200Kinvara PWS1200PUB1034
16 Nov 2023259ug/l200Killeshandra PWS0200PUB0113
09 Nov 2023290ug/l200Galway City PWS1100PUB1001
07 Nov 2023282ug/l200SRRWSS - Killeglan2600PUB1004
01 Nov 2023456ug/l200DONEGAL(RIVER ESKE)0600PUB1098
25 Oct 2023205ug/l200Swanlinbar PWS0200PUB0117
16 Oct 2023245ug/l200Killeshandra PWS0200PUB0113
10 Oct 2023279ug/l200Burncourt Regional2900PUB0105
02 Oct 2023370ug/l200Carna/Kilkieran RWSS1200PUB1008
02 Oct 2023253ug/l200SRRWSS - Killeglan2600PUB1004
18 Sep 2023254ug/l200Fingal Zone 10900PUB1001
18 Sep 2023237ug/l200DLR Zone 71000PUB1007
22 Aug 2023287ug/l200Inch PWS 044D1300PUB1040
18 Aug 2023230ug/l200Gowna0200PUB0112
09 Aug 2023212ug/l200Kinvara PWS1200PUB1034
01 Aug 2023528ug/l200Barrow Supply1400PUB1060
17 Jul 2023244ug/l200FROSSES-INVER0600PUB1096
17 Jul 2023239ug/l200East Waterford Water Supply Scheme3800PUB1110
26 Jun 2023203ug/l200DCC Zone 40700PUB1005
19 Jun 2023214ug/l200Limerick City Environs PWS1900PUB1032
12 Jun 2023359ug/l200Fingal Zone 10900PUB1001
06 Jun 2023315ug/l200LETTERKENNY0600PUB1110
02 Jun 2023257ug/l200Emyvale2400PUB1008
18 May 2023292ug/l200Kinvara PWS1200PUB1034
15 May 2023293ug/l200Inch PWS 044D1300PUB1040
24 Apr 20231,719ug/l200Barrow/Poulaphouca Blend1400PUB1070
18 Apr 2023234ug/l200Kenmare PWS 045A1300PUB1058
03 Apr 2023309ug/l200An Daingean PWS 030D1300PUB1034
16 Mar 2023244ug/l200Barrow/Poulaphouca Blend1400PUB1070
02 Mar 2023250ug/l200Cavan RWSS0200PUB0100
08 Feb 2023920ug/l200Fethard Regional Public Water Supply2900PUB0137
12 Jan 2023219ug/l200Navan-Mid Meath Kilcarn PWS2300PUB1051
20 Dec 2022409ug/l200LETTERMACAWARD0600PUB1069
07 Nov 2022295ug/l200SRRWSS - Killeglan2600PUB1004
26 Oct 2022281ug/l200Newtown Newcastle Kilcoole PWS3400PUB1010
19 Oct 2022271ug/l200CRANFORD0600PUB1045
18 Oct 20221,000ug/l200SRRWSS - Killeglan2600PUB1004
12 Sep 2022380ug/l200North East Regional PWS2600PUB1030
08 Sep 2022279ug/l200Leixlip Regional1400PUB1019
06 Sep 2022517ug/l200An Daingean PWS 030D1300PUB1034
22 Aug 20222,210ug/l200Inisboffin PWS1200PUB1024
15 Aug 2022256ug/l200LETTERMACAWARD0600PUB1069
15 Aug 2022290ug/l200Carna/Kilkieran RWSS1200PUB1008
19 Jul 2022211ug/l200ACHILL RWSS2200PUB1001
18 Jul 2022222ug/l200LETTERMACAWARD0600PUB1069
18 Jul 2022377ug/l200Portumna PWS1200PUB1042
05 Jul 2022241ug/l200SRRWSS - Killeglan2600PUB1004
05 Jul 2022330ug/l200SRRWSS - Killeglan2600PUB1004
29 Jun 2022245ug/l200LETTERMACAWARD0600PUB1069
01 Jun 2022239ug/l200POLLAN DAM PUB0600PUB1020
01 Jun 2022271ug/l200Navan-Mid Meath Kilcarn PWS2300PUB1051
30 May 2022319ug/l200Limerick City Environs PWS1900PUB1032
25 May 2022202ug/l200Ballinasloe Public Supply1200PUB1004
18 May 2022520ug/l200KILLAVANEY PUBLIC SUPPLY (TINAHELY)3400PUB1072
16 May 2022432ug/l200Inch PWS 044D1300PUB1040
21 Apr 2022217ug/l200Spiddal Public Water Supply1200PUB1045
20 Apr 2022346ug/l200Killadysert PWS0300PUB1008
14 Mar 2022272ug/l200INISHOWEN WEST0600PUB1005
08 Mar 2022255ug/l200Leixlip Regional1400PUB1019
01 Mar 2022817ug/l200Castlerea PWS2600PUB1028
15 Feb 2022217ug/l200LETTERMACAWARD0600PUB1069
02 Feb 2022279ug/l200WICKLOW REGIONAL SUPPLY3400PUB1005
24 Jan 2022248ug/l200Carlow Town0100PUB1001
04 Jan 2022766ug/l200Limerick City Environs PWS1900PUB1032
16 Dec 2021245ug/l200ROSSES REGIONAL PUB0600PUB1060
15 Dec 2021207ug/l200Barrow/Poulaphouca Blend1400PUB1070
14 Dec 2021268ug/l200Barrow/Poulaphouca Blend1400PUB1070
29 Nov 2021295ug/l200Limerick City Environs PWS1900PUB1032
23 Nov 2021217ug/l200Kinvara PWS1200PUB1034
23 Nov 2021253ug/l200Castlegregory PWS 024D1300PUB1026
22 Nov 2021510ug/l200An Daingean PWS 030D1300PUB1034
03 Nov 2021277ug/l200Ennis PWS0300PUB1009
01 Nov 2021442ug/l200Castlerea PWS2600PUB1028
01 Nov 2021255ug/l200Enniscorthy3300PUB1491
01 Nov 2021363ug/l200Wexford Town3300PUB1669
13 Oct 20211,041ug/l200WICKLOW REGIONAL SUPPLY3400PUB1005
11 Oct 2021269ug/l200Bandon Regional0500PUB2101
07 Oct 2021226ug/l200Kinvara PWS1200PUB1034
04 Oct 2021409ug/l200DONEGAL(RIVER ESKE)0600PUB1098
21 Sep 2021271ug/l200Macroom0500PUB2307
13 Sep 2021233ug/l200Louisburgh PWS2200PUB1020
28 Jul 2021460ug/l200Tullamore South and Clonaslee2500PUB1020
27 Jul 2021224ug/l200Caragh Lake PWS 022A1300PUB1046
26 Jul 2021243ug/l200FROSSES-INVER0600PUB1096
19 Jul 2021204ug/l200FROSSES-INVER0600PUB1096
16 Jul 2021265ug/l200Cavanhill2100PUB1018
15 Jul 2021261ug/l200Crehanagh3100PUB1107
06 Jul 2021626ug/l200Barrow/Poulaphouca Blend1400PUB1070
06 Jul 2021651ug/l200Barrow/Poulaphouca Blend1400PUB1070
30 Jun 2021430ug/l200Cork Harbour & City0500PUB3401
29 Jun 2021314ug/l200Barrow/Poulaphouca Blend1400PUB1070
28 Jun 2021344ug/l200Gowna0200PUB0112
28 Jun 2021205ug/l200KILLYBEGS0600PUB1094
21 Jun 2021227ug/l200Carlow Town0100PUB1001
14 Jun 2021479ug/l200Arvagh PWS0200PUB0101
08 Jun 2021298ug/l200Cavanhill2100PUB1018
08 Jun 2021234ug/l200SRRWSS - Killeglan2600PUB1004
04 Jun 2021338ug/l200Cavanhill2100PUB1018
03 Jun 2021290ug/l200Barrow/Poulaphouca Blend1400PUB1070
03 Jun 2021352ug/l200Barrow/Poulaphouca Blend1400PUB1070
02 Jun 2021323ug/l200Limerick City Environs PWS1900PUB1032
01 Jun 2021539ug/l200Barrow/Poulaphouca Blend1400PUB1070
24 May 2021305ug/l200Castlegregory PWS 024D1300PUB1026
11 May 20211,330ug/l200CRANFORD0600PUB1045
26 Apr 2021414ug/l200Limerick City Environs PWS1900PUB1032
19 Apr 2021561ug/l200Kilsellagh Public Water Supply2700PUB2706
14 Apr 2021557ug/l200Macroom0500PUB2307
12 Apr 2021226ug/l200Barrow Supply1400PUB1060
22 Mar 2021607ug/l200Barrow Supply1400PUB1060
22 Mar 2021282ug/l200Barrow/Poulaphouca Blend1400PUB1070
09 Mar 2021255ug/l200Midleton0500PUB2406
26 Feb 2021529ug/l200Inisboffin PWS1200PUB1024
24 Feb 2021221ug/l200WICKLOW REGIONAL SUPPLY3400PUB1005
16 Feb 2021849ug/l200BALLYMAHON2000PUB1005
15 Feb 2021451ug/l200Hacketstown0100PUB1123
09 Feb 2021319ug/l200An Daingean PWS 030D1300PUB1034
02 Feb 2021315ug/l200Emyvale2400PUB1008
01 Feb 2021551ug/l200Swinford PWS2200PUB1024
26 Jan 2021245ug/l200INISHOWEN WEST0600PUB1005
26 Jan 2021245ug/l200Tullamore South and Clonaslee2500PUB1020
19 Jan 2021282.8ug/l200Allow Regional0500PUB1101
19 Jan 2021400ug/l200Breanlee PWS 088A1300PUB1094
13 Jan 2021400ug/l200Killadysert PWS0300PUB1008
12 Jan 2021202ug/l200Cavanhill2100PUB1018
04 Jan 2021225ug/l200Arvagh PWS0200PUB0101

Places with mapped Aluminium monitoring data

Explore existing place reports with mapped Water Supply Zones containing Aluminium monitoring records in 2021–2025.

95 published places have at least one qualifying mapped zone. The 20 largest are listed below by Census 2022 population, not by Aluminium levels.

Places can share the same Water Supply Zone. These links do not represent independent city measurements; sampling locations may be outside the named Built Up Area. National totals above count each source record once.

DublinDublinCorkCorkLimerickLimerickGalwayGalwayWaterfordWaterfordDroghedaLouthDundalkLouthSwordsDublinNavanMeathBrayWicklowEnnisClareCarlowCarlowKilkennyKilkennyNaasKildareTraleeKerryNewbridgeKildareBalbrigganDublinPortlaoiseLaoisAthloneWestmeathMullingarWestmeath

View all places — the complete published place directory.

Indicator records and interpretation

The aluminium indicator value is shown alongside monitoring coverage. A listed record is not used to diagnose the treatment process or the condition of a particular tap.

Current water information for your address

For current supply information, check your Eircode with Uisce Éireann. Follow the notice for your address: a Boil Water Notice and a Do Not Consume Notice have different instructions. This historical report does not recommend boiling as a treatment for chemical parameters.

Frequently asked questions

What does this Aluminium report cover?

31,832 monitoring records across 5 available monitoring year(s): 2021, 2022, 2023, 2024, 2025. The selected source is Aluminium. National totals come directly from EPA records, not a sum of towns.

What is the Irish drinking-water requirement for Aluminium?

200 µg/l. Indicator value under Schedule 1 Table C.

Does an aluminium record identify its source?

No. The imported monitoring record does not identify whether aluminium came from the source water or treatment.

Can I compare the recorded Aluminium values with the standard?

Monitoring unit metadata have not been verified in this import. Numeric and censored records are counted separately; no concentration median, maximum or compliance rate is inferred from them. Listed records keep the units supplied by the separate EPA exceedance dataset.

Does a place link give the current Aluminium result at my address?

No. It identifies a place with a mapped supply and historical monitoring. It is not a test of every property. Check current Uisce Éireann supply information using your Eircode.

Sources and methodology

Monitoring data
EPA Ireland: drinking-water monitoring data: public-supply monitoring results and the separate listed exceedance records, 2021–2025.
Counting
Source records are counted once across schemes. A sample is identified by its scheme, sample ID and date. Listed exceedances are not inferred from numeric results.
Interpretation
Text and censored results are not converted to numbers. Missing values are not zero. Records do not establish conditions in an individual home or an official compliance rate.

Read the full methodologyView data sources