PFAS in Drinking Water in Ireland
Explore EPA Ireland monitoring records, listed exceedances and historical trends for PFAS in public drinking-water supplies across Ireland.
PFAS is a broad family of manufactured chemicals.
- Latest monitoring year
- 2025
- Page updated
- September 2026
- Data available
- 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, 1,072 PFAS monitoring results were recorded from 1,072 samples across 651 public water supplies.
- The separate EPA exceedance dataset lists 0 records across 0 schemes in 2025.
Sum of 20 PFAS monitoring and the Irish standard
Recorded results for 2025, with official requirements shown separately.
Irish drinking-water requirement
0.1 µg/l
Sum of the 20 PFAS specified in Schedule 1 Note 17. Applies from 12 January 2026; the selected historical records precede that date.
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
- 23
- EPA-listed exceedances
- 0
- Water supplies monitored
- 651
- First sample
- 04 Feb 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.
The selected source is Sum of PFAS (sum of 20), not PFAS Total. The 0.10 µg/l Sum of PFAS requirement applies from 12 January 2026; earlier monitoring records are not retrospectively reclassified here.
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 · 2025
The imported monitoring records have no unit field. These are counts of recorded values, not concentrations or a comparison with the standard.
23 numeric records; 1,044 censored text records; 0 other text-only records; 5 records without a result value.
1,055 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 |
|---|---|---|---|---|---|
| 2025 | 23 | 1,055 | 1,044 | 0 | 5 |
Available monitoring year 2025
Monitoring volume and listed exceedances have separate scales. Select a year to inspect its figures.
Only 2025 is available for this parameter. These records do not establish a multi-year trend.
Across this period, 1,072 results from 1,072 samples cover 651 distinct water supplies. Sample dates run from 04 Feb 2025 to 16 Dec 2025.
20251,072 results · 0 listed exceedances · 651 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.
| Year | Results | Samples | Schemes monitored | Listed exceedances | Schemes with listed exceedances |
|---|---|---|---|---|---|
| 2025 | 1,072 | 1,072 | 651 | 0 | 0 |
EPA-listed PFAS exceedances
0 listed records across 0 distinct schemes, 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 |
|---|---|---|---|---|---|---|
| No listed exceedance records in this period. | ||||||
Show all 0 listed records 2025 · newest first
| Date | Result | Reported unit | Reported limit | Water supply scheme | Scheme code |
|---|
Places with mapped PFAS monitoring data
Explore existing place reports with mapped Water Supply Zones containing PFAS monitoring records in 2025.
94 published places have at least one qualifying mapped zone. The 20 largest are listed below by Census 2022 population, not by PFAS 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.
Twenty specified PFAS, not every PFAS
The selected source is Sum of PFAS (sum of 20), not PFAS Total. The 0.10 µg/l Sum of PFAS requirement applies from 12 January 2026; earlier monitoring records are not retrospectively reclassified here.
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 PFAS report cover?
1,072 monitoring records across 1 available monitoring year(s): 2025. The selected source is Sum of PFAS (sum of 20). National totals come directly from EPA records, not a sum of towns.
What is the Irish drinking-water requirement for PFAS?
0.1 µg/l. Sum of the 20 PFAS specified in Schedule 1 Note 17. Applies from 12 January 2026; the selected historical records precede that date.
Does this page measure all PFAS?
No. It covers the source's Sum of 20 PFAS parameter. It does not claim coverage of every PFAS substance or confirmed search frequency for this topic.
Can I compare the recorded PFAS 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 PFAS 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, 2025.
- Water testing
- Uisce Éireann: drinking water tests
- 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.