WaterCheck Ireland

Buncrana Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Buncrana contain 1,101 monitoring results across 71 parameters in 2025.

The separate EPA exceedance dataset contains 2 listed exceedance records across 2 parameters.

The most frequently listed were Colour (1) and Haloacetic acids (Sum of 5 HAAs) (1).

These are historical monitoring records and do not confirm the current status of water at a specific address. Current notices are maintained by Uisce Éireann.

Latest monitoring year
2025
Page updated
September 2026
Water Supply Zones
2
1,101Monitoring results
71Parameters tested
2EPA-listed exceedances
68Samples

Monitoring results apply to the Water Supply Zones as a whole and may include sampling locations outside Buncrana.

Selected monitoring data

Key drinking water parameters

Parameters are shown when measurements are available. Text-only and censored values remain unchanged in the detailed history.

Lead

2025 median1
2025 maximum1
Measurements in 20255

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

3 numeric measurements available; 24 text-only records retained in JSON.

Nitrate

2025 median4.6
2025 maximum4.6
Measurements in 20255

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

1 numeric measurements available; 22 text-only records retained in JSON.

E. coli

2025 median0
2025 maximum0
Measurements in 202559

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

288 numeric measurements available; 0 text-only records retained in JSON.

Coliform Bacteria

2025 median0 100ml
2025 maximum0 100ml
Measurements in 202559

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

288 numeric measurements available; 0 text-only records retained in JSON.

Fluoride

2025 median0.6
2025 maximum0.6
Measurements in 20255

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

10 numeric measurements available; 17 text-only records retained in JSON.

Iron

2025 median22 ug/l
2025 maximum166 ug/l
Measurements in 202559

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

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Numeric resultEPA-listed exceedance

108 numeric measurements available; 180 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20255

0 EPA-listed exceedances in 2025.

View parameter history

Individual numeric measurements from 2021–2025. Text-only and censored results are retained in the history JSON and are not plotted as numbers.

Open this chart to load the measurements.

Numeric resultEPA-listed exceedance

5 numeric measurements available; 22 text-only records retained in JSON.

20251,101 results · 2 listed exceedances
Total results — independent scale
0 550.5 1,101 1,078 2021 997 2022 995 2023 1,056 2024 1,101 2025
Listed exceedances per 1,000 results — independent scale
0.000 3.711 7.421 7.421 2021 5.015 2022 7.035 2023 0.947 2024 1.817 2025

This is our descriptive frequency: listed exceedance records divided by result records, multiplied by 1,000. It is not an official EPA compliance rate. Differences in sampling volume and parameters tested affect comparisons. A missing denominator is shown as unavailable.

Monitoring history by year
YearResultsSamplesParametersListed exceedancesPer 1,000 results
20211,078596487.421
2022997596555.015
2023995546577.035
20241,056646610.947
20251,101687121.817

Year-to-year detail

2025 compared with 2024

Changes describe dataset volumes only. The comparison uses the previous available year.

Results
20241,056
20251,101
+45
Listed exceedances
20241
20252
+1
Samples
202464
202568
+4
Parameters
202466
202571
+5

Parameters with EPA-listed exceedances

Values and limits are reproduced as reported. Different unit/limit pairs are shown separately.

Colour

1 listed exceedance records / 59 tests1.69%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
77 Hazen
Reported limit
20 Hazen
Records with this unit/limit pair
1
Latest exceedance
17 Dec 2025

Haloacetic acids (Sum of 5 HAAs)

1 listed exceedance records / 5 tests20.00%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
80 µg/l
Reported limit
60 µg/l
Records with this unit/limit pair
1
Latest exceedance
14 Aug 2025

Across the year

When were listed exceedances recorded?

Each point represents one listed exceedance record. Records on the same date remain separate.

Colour17 Dec 2025
77 HazenReported result
20 HazenReported limit
POLLAN DAM PUBWater supply
JanFebMarAprMayJunJulAugSepOctNovDecColourHaloacetic acids (Sum of 5 HAAs)17 Dec 2025 — Colour: 77 Hazen; reported limit 20; POLLAN DAM PUB; sample 21562914 Aug 2025 — Haloacetic acids (Sum of 5 HAAs): 80 µg/l; reported limit 60; POLLAN DAM PUB; sample 193071

2 listed exceedance records across 2 parameters in 2025.

Your mapped supply

Water supply

Every Water Supply Zone used for this page's headline figures is included. Geographic overlaps are reported separately and are not added together or weighted by population.

Buncrana

43.32% geographic overlap with the Buncrana Built Up Area.

Technical mapping details
EDEN code
0600PUB1018
Local authority
Donegal
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Pollan Dam

43.04% geographic overlap with the Buncrana Built Up Area.

Technical mapping details
EDEN code
0600PUB1020
Local authority
Donegal
Page totals
Included
Spatial rank
2
Historical EPA scheme
Available
Latest monitoring year
2025

Detailed data

The complete parameter and listed exceedance tables for the reporting year.

71 parameter rows2 listed exceedance records68 samples
Show detailed data71 parameters · 2 exceedance records

Complete parameter index

All parameters in 2025

All parameters with test results or listed exceedance records in the latest reporting year
1,2-dichloroethane5010 Nov 20252
2,3,6-trichlorobenzoic acid5010 Nov 20252
2,4-D5010 Nov 20252
Acrylamide5010 Nov 20252
Aluminium59017 Dec 20252
Ammonium5010 Nov 20252
Antimony5010 Nov 20252
Arsenic5010 Nov 20252
Atrazine5010 Nov 20252
Bentazone5010 Nov 20252
Benzene5010 Nov 20252
Benzo(a)pyrene5010 Nov 20252
Bisphenol A5010 Nov 20252
Boron5010 Nov 20252
Bromate5010 Nov 20252
Cadmium5010 Nov 20252
Chlorfenvinphos5010 Nov 20252
Chloride5010 Nov 20252
Chromium5010 Nov 20252
Clopyralid5010 Nov 20252
Clostridium Perfringens5010 Nov 20252
Coliform Bacteria59017 Dec 20252
Colony Count @ 22°C54017 Dec 20252
Colour59117 Dec 20252
Conductivity59017 Dec 20252
Copper5010 Nov 20252
Cryptosporidium9018 Dec 20251
Cyanide5010 Nov 20252
Cypermethrin5010 Nov 20252
Dichlobenil5010 Nov 20252
Dichlorprop5010 Nov 20252
Diflufenican5010 Nov 20252
Diuron5010 Nov 20252
E. coli59017 Dec 20252
Enterococci59017 Dec 20252
Fluoride5010 Nov 20252
Free Chlorine59017 Dec 20252
Giardia9018 Dec 20251
Glyphosate5010 Nov 20252
Haloacetic acids (Sum of 5 HAAs)5110 Nov 20252
Iron59017 Dec 20252
Isoproturon5010 Nov 20252
Lead5010 Nov 20252
Linuron5010 Nov 20252
Manganese5010 Nov 20252
MCPA5010 Nov 20252
Mecoprop5010 Nov 20252
Mercury5010 Nov 20252
Metaldehyde5010 Nov 20252
Microcystin-LR2010 Nov 20251
Nickel5010 Nov 20252
Nitrate5010 Nov 20252
Nitrite (at tap)5010 Nov 20252
Odour54017 Dec 20252
PAH5010 Nov 20252
Pendimethalin5010 Nov 20252
Pesticides - Total5010 Nov 20252
pH59017 Dec 20252
Propyzamide5010 Nov 20252
Selenium5010 Nov 20252
Simazine5010 Nov 20252
Sodium5010 Nov 20252
Sulphate5010 Nov 20252
Sum of PFAS (sum of 20)5010 Nov 20252
Taste54017 Dec 20252
Tetrachloroethene & Trichloroethene5010 Nov 20252
Total Chlorine59017 Dec 20252
Total Organic Carbon5010 Nov 20252
Triclopyr5010 Nov 20252
Trihalomethanes(Total)5010 Nov 20252
Turbidity (at tap)59017 Dec 20252

Showing 71 of 71 parameters.

EPA exceedance dataset

Listed exceedances in 2025

Newest first. Sample IDs distinguish records that may otherwise look identical.

All listed exceedance records in the latest reporting year
DateParameterResultUnitReported limitWater supply / EDENSample ID
17 Dec 2025Colour77Hazen20POLLAN DAM PUB
0600PUB1020		215629
14 Aug 2025Haloacetic acids (Sum of 5 HAAs)80µg/l60POLLAN DAM PUB
0600PUB1020		193071

Common questions

Frequently asked questions

Is Buncrana tap water safe to drink?

WaterCheck Ireland does not issue a current safe or unsafe verdict. This page presents historical monitoring data. Check Uisce Éireann for any current Boil Water or Do Not Consume notices affecting your address.

Can you drink tap water in Buncrana?

WaterCheck Ireland provides historical drinking-water monitoring data, not a current safe or unsafe verdict. For current Boil Water or Do Not Consume notices, check your Eircode with Uisce Éireann.

What is the tap water quality in Buncrana?

In 2025, monitoring data for 2 Water Supply Zones mapped to Buncrana included 1,101 results across 71 parameters. The separate EPA-listed exceedance dataset contains 2 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Buncrana?

The historical monitoring figures shown here come from drinking-water datasets published by the Environmental Protection Agency (EPA), Ireland. Uisce Éireann operates public water supplies and publishes current supply notices.

What is a Water Supply Zone?

A Water Supply Zone is a defined area supplied by a public drinking-water system. Monitoring records apply to the zone as a whole, so sampling locations can be outside the Census Built Up Area.

What does a listed exceedance mean?

It is a record published in the separate EPA exceedance dataset. WaterCheck Ireland reproduces those records and does not infer additional exceedances or turn the record count into a safety assessment.

How can I check current water notices for my Eircode?

Use your Eircode on the Uisce Éireann website to check current Boil Water and Do Not Consume notices. This page is based on historical monitoring data and is not a live notice service.

Explore nearby reports

Water Quality Near Buncrana

Nearest published Built Up Areas, ordered by straight-line distance between Census reference points.

LetterkennyDonegal · approximately 25.7 kmBallybofey and StranorlarDonegal · approximately 42.8 kmMonaghanMonaghan · approximately 103.6 kmSligoSligo · approximately 116.3 kmCavanCavan · approximately 126.9 kmCarrickmacrossMonaghan · approximately 137.3 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Buncrana. Population refers to the whole Built Up Area.
Supply mapping
Uisce Éireann Water Supply Zone boundaries are matched geographically to the settlement.
Monitoring
EPA monitoring results and the separate listed exceedance dataset, 2021–2025.
Interpretation
Geographic overlap measures land area, not population served; monitoring applies across the full supply zone.

Read the full methodologyView data sources