Fluoride in Drinking Water in Ireland
Explore EPA Ireland monitoring records, listed exceedances and historical trends for Fluoride in public drinking-water supplies across Ireland.
Fluoride may be naturally present or added during treatment.
- Latest monitoring year
- 2025
- Page updated
- September 2026
- Data available
- 2021, 2022, 2023, 2024, 2025
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.
- In 2025, 1,137 Fluoride monitoring results were recorded from 1,137 samples across 686 public water supplies.
- The separate EPA exceedance dataset lists 0 records across 0 schemes in 2025.
- There were 78 more monitoring results than in 2024 (7.4% more). This describes the volume of monitoring, not a change in water quality.
Fluoride content and Irish standards
Recorded results for 2025, with official requirements shown separately.
Irish drinking-water requirement
1.5 mg/l
S.I. 99/2023 parametric value. Fluoridated supplies have a separate 0.6–0.8 mg/l range under S.I. 42/2007.
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
- 781
- EPA-listed exceedances
- 0
- Water supplies monitored
- 686
- First sample
- 27 Jan 2025
- Latest sample
- 16 Dec 2025
These are historical records, not the current status of your water. EPA-listed exceedances come from a separate dataset.
For supplies to which fluoride is added, the fluoridation range is 0.6–0.8 mg/l. The 1.5 mg/l drinking-water parametric value is not the dosing target. The imported records do not identify which supplies are fluoridated.
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.
3,495 numeric records; 1,715 censored text records; 0 other text-only records; 29 records without a result value.
4,388 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.
| Year | Numeric | Non-empty text field | Censored text | Other text only | No result value |
|---|---|---|---|---|---|
| 2021 | 642 | 850 | 361 | 0 | 4 |
| 2022 | 680 | 855 | 327 | 0 | 0 |
| 2023 | 684 | 859 | 334 | 0 | 11 |
| 2024 | 708 | 866 | 337 | 0 | 14 |
| 2025 | 781 | 958 | 356 | 0 | 0 |
Monitoring history 2021–2025
Monitoring volume and listed exceedances have separate scales. Select a year to inspect its figures.
Across this period, 5,239 results from 5,239 samples cover 730 distinct water supplies. Sample dates run from 05 Jan 2021 to 16 Dec 2025.
20251,137 results · 0 listed exceedances · 686 schemes monitored
Monitoring results — independent scale
EPA-listed exceedance records — independent scale
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 78 more monitoring results than in 2024 (7.4% more). This describes the volume of monitoring, not a change in water quality.
| Year | Results | Samples | Schemes monitored | Listed exceedances | Schemes with listed exceedances |
|---|---|---|---|---|---|
| 2021 | 1,007 | 1,007 | 609 | 23 | 23 |
| 2022 | 1,007 | 1,007 | 605 | 20 | 16 |
| 2023 | 1,029 | 1,029 | 629 | 2 | 1 |
| 2024 | 1,059 | 1,059 | 646 | 0 | 0 |
| 2025 | 1,137 | 1,137 | 686 | 0 | 0 |
EPA-listed Fluoride exceedances
45 listed records across 38 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.
| Year | Records | Schemes | Lowest listed result | Highest listed result | Reported unit | Reported limit |
|---|---|---|---|---|---|---|
| 2021 | 23 | 23 | 0.81 | 1 | mg/l | 0.8 |
| 2022 | 20 | 16 | 0.82 | 1 | mg/l | 0.8 |
| 2023 | 2 | 1 | 0.81 | 0.92 | mg/l | 0.8 |
Show all 45 listed records 2021–2025 · newest first
| Date | Result | Reported unit | Reported limit | Water supply scheme | Scheme code |
|---|---|---|---|---|---|
| 11 Sep 2023 | 0.81 | mg/l | 0.8 | Bagenalstown | 0100PUB1161 |
| 17 Apr 2023 | 0.92 | mg/l | 0.8 | Bagenalstown | 0100PUB1161 |
| 14 Nov 2022 | 0.9 | mg/l | 0.8 | Kilmuckridge | 3300PUB1545 |
| 01 Nov 2022 | 0.9 | mg/l | 0.8 | Bray PWS | 3400PUB1001 |
| 12 Sep 2022 | 0.9 | mg/l | 0.8 | Castlerea PWS | 2600PUB1028 |
| 07 Sep 2022 | 0.9 | mg/l | 0.8 | Ennistymon RWS | 0300PUB1004 |
| 06 Sep 2022 | 1 | mg/l | 0.8 | Kinvara PWS | 1200PUB1034 |
| 06 Sep 2022 | 0.9 | mg/l | 0.8 | Borrisokane | 2800PUB1002 |
| 05 Sep 2022 | 0.9 | mg/l | 0.8 | Tuam RWSS | 1200PUB1047 |
| 01 Sep 2022 | 0.9 | mg/l | 0.8 | Dungarvan | 3100PUB1039 |
| 08 Aug 2022 | 0.9 | mg/l | 0.8 | Carlow North Regional | 0100PUB1142 |
| 08 Aug 2022 | 0.9 | mg/l | 0.8 | Castlerea PWS | 2600PUB1028 |
| 19 Jul 2022 | 0.9 | mg/l | 0.8 | Castletownroche | 0500PUB1306 |
| 06 Jul 2022 | 0.9 | mg/l | 0.8 | Ennis PWS | 0300PUB1009 |
| 20 Jun 2022 | 1 | mg/l | 0.8 | Kilconnell PWS | 1200PUB1030 |
| 13 Jun 2022 | 0.84 | mg/l | 0.8 | Portlaoise PWS | 1600PUB1004 |
| 09 Jun 2022 | 0.9 | mg/l | 0.8 | Kilsellagh Public Water Supply | 2700PUB2706 |
| 01 Jun 2022 | 1 | mg/l | 0.8 | Dungarvan | 3100PUB1039 |
| 11 Apr 2022 | 0.9 | mg/l | 0.8 | Ballyhooly | 0500PUB1203 |
| 11 Apr 2022 | 0.9 | mg/l | 0.8 | Ballyclough & Mount North | 0500PUB1316 |
| 11 Apr 2022 | 0.82 | mg/l | 0.8 | Portlaoise PWS | 1600PUB1004 |
| 22 Mar 2022 | 0.9 | mg/l | 0.8 | Kilsellagh Public Water Supply | 2700PUB2706 |
| 09 Dec 2021 | 0.9 | mg/l | 0.8 | Cork Harbour & City | 0500PUB3401 |
| 03 Nov 2021 | 0.9 | mg/l | 0.8 | Ballina - Wherrew | 2200PUB1003 |
| 03 Nov 2021 | 1 | mg/l | 0.8 | Ballina Town Mixed Supply | 2200PUB1008 |
| 03 Nov 2021 | 1 | mg/l | 0.8 | Bray PWS | 3400PUB1001 |
| 02 Nov 2021 | 1 | mg/l | 0.8 | Galway City PWS | 1100PUB1001 |
| 07 Sep 2021 | 0.9 | mg/l | 0.8 | Roscommon Central Water Supply Scheme | 2600PUB1002 |
| 06 Sep 2021 | 0.9 | mg/l | 0.8 | Carlow Town | 0100PUB1001 |
| 20 Jul 2021 | 0.9 | mg/l | 0.8 | Castletownroche | 0500PUB1306 |
| 14 Jun 2021 | 0.9 | mg/l | 0.8 | Borris | 0100PUB1162 |
| 04 May 2021 | 0.9 | mg/l | 0.8 | Kilcormac PWS | 2500PUB1011 |
| 12 Apr 2021 | 0.94 | mg/l | 0.8 | Barrow Supply | 1400PUB1060 |
| 12 Apr 2021 | 0.9 | mg/l | 0.8 | SRRWSS - Killeglan | 2600PUB1004 |
| 09 Apr 2021 | 0.84 | mg/l | 0.8 | Cavanhill | 2100PUB1018 |
| 06 Apr 2021 | 0.81 | mg/l | 0.8 | Cavan RWSS | 0200PUB0100 |
| 06 Apr 2021 | 0.85 | mg/l | 0.8 | Ballyjamesduff RWSS | 0200PUB0106 |
| 02 Apr 2021 | 0.87 | mg/l | 0.8 | Ardee | 2100PUB1001 |
| 01 Apr 2021 | 0.9 | mg/l | 0.8 | Mountbellew PWS | 1200PUB1039 |
| 11 Mar 2021 | 0.86 | mg/l | 0.8 | Monasterevin | 1400PUB1020 |
| 11 Mar 2021 | 0.86 | mg/l | 0.8 | Rathangan | 1400PUB1041 |
| 08 Mar 2021 | 0.9 | mg/l | 0.8 | Athlone PWS | 3200PUB1001 |
| 04 Mar 2021 | 0.9 | mg/l | 0.8 | Dunboyne | 2300PUB1006 |
| 04 Mar 2021 | 0.9 | mg/l | 0.8 | Monaghan | 2400PUB1024 |
| 02 Mar 2021 | 0.9 | mg/l | 0.8 | LERWSS | 2400PUB1001 |
Places with mapped Fluoride monitoring data
Explore existing place reports with mapped Water Supply Zones containing Fluoride 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 Fluoride 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.
Fluoridation and naturally occurring fluoride
For supplies to which fluoride is added, the fluoridation range is 0.6–0.8 mg/l. The 1.5 mg/l drinking-water parametric value is not the dosing target. The imported records do not identify which supplies are fluoridated.
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 Fluoride report cover?
5,239 monitoring records across 5 available monitoring year(s): 2021, 2022, 2023, 2024, 2025. The selected source is Fluoride. National totals come directly from EPA records, not a sum of towns.
What is the Irish drinking-water requirement for Fluoride?
1.5 mg/l. S.I. 99/2023 parametric value. Fluoridated supplies have a separate 0.6–0.8 mg/l range under S.I. 42/2007.
Can this report show the fluoride content of my tap water?
It shows historical Fluoride records for monitored supplies. It cannot identify your current tap-water level or infer fluoridation status from an unlabelled numeric result.
Can I compare the recorded Fluoride 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 Fluoride 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.
- Water testing
- Uisce Éireann: drinking water tests
- Water fluoridation
- Uisce Éireann: fluoridation specification (S.I. 42/2007 range)
- 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.