WaterCheck Ireland

Ballinasloe Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Ballinasloe contain 697 monitoring results across 68 parameters in 2025.

The separate EPA exceedance dataset contains 3 listed exceedance records across 2 parameters.

The most frequently listed were Aluminium (2) and Enterococci (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
697Monitoring results
68Parameters tested
3EPA-listed exceedances
35Samples

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

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 median—
2025 maximum—
Measurements in 20254

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

4 numeric measurements available; 16 text-only records retained in JSON.

Nitrate

2025 median13
2025 maximum14
Measurements in 20254

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

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

E. coli

2025 median0 100ml
2025 maximum0 100ml
Measurements in 202535

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum0 100ml
Measurements in 202535

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

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

Fluoride

2025 median0.75 mg/l
2025 maximum0.8 mg/l
Measurements in 20254

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

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

Iron

2025 median21.5 ug/l
2025 maximum167 ug/l
Measurements in 202535

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

58 numeric measurements available; 120 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20254

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

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

2025697 results · 3 listed exceedances
Total results — independent scale
0 362.5 725 599 2021 644 2022 664 2023 725 2024 697 2025
Listed exceedances per 1,000 results — independent scale
0.000 7.764 15.528 11.686 2021 15.528 2022 7.530 2023 2.759 2024 4.304 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
20215993364711.686
202264436641015.528
2023664366557.530
2024725386622.759
2025697356834.304

Year-to-year detail

2025 compared with 2024

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

Results
2024725
2025697
-28
Listed exceedances
20242
20253
+1
Samples
202438
202535
-3
Parameters
202466
202568
+2

Parameters with EPA-listed exceedances

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

Aluminium

2 listed exceedance records / 35 tests5.71%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
243 ug/l
Reported limit
200 ug/l
Records with this unit/limit pair
2
Latest exceedance
15 Sep 2025

Enterococci

1 listed exceedance records / 35 tests2.86%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
1 100ml
Reported limit
0 100ml
Records with this unit/limit pair
1
Latest exceedance
01 Sep 2025

Across the year

When were listed exceedances recorded?

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

Aluminium15 Sep 2025
209 ug/lReported result
200 ug/lReported limit
Ballinasloe Public SupplyWater supply
JanFebMarAprMayJunJulAugSepOctNovDecAluminiumEnterococci15 Sep 2025 — Aluminium: 209 ug/l; reported limit 200; Ballinasloe Public Supply; sample 19891701 Sep 2025 — Enterococci: 1 100ml; reported limit 0; SRRWSS - Killeglan; sample 2544482304 Feb 2025 — Aluminium: 243 ug/l; reported limit 200; SRRWSS - Killeglan; sample 25440447

3 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.

Ballinasloe Public Supply

85.66% geographic overlap with the Ballinasloe Built Up Area.

Technical mapping details
EDEN code
1200PUB1004
Local authority
Galway
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Srrwss - Killeglan

1.03% geographic overlap with the Ballinasloe Built Up Area.

Technical mapping details
EDEN code
2600PUB1004
Local authority
Roscommon
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.

68 parameter rows3 listed exceedance records35 samples
Show detailed data68 parameters · 3 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-dichloroethane4005 Sep 20252
2,3,6-trichlorobenzoic acid4005 Sep 20252
2,4-D4005 Sep 20252
Acrylamide4005 Sep 20252
Aluminium35215 Dec 20252
Ammonium4005 Sep 20252
Antimony4005 Sep 20252
Arsenic4005 Sep 20252
Atrazine4005 Sep 20252
Bentazone4005 Sep 20252
Benzene4005 Sep 20252
Benzo(a)pyrene4005 Sep 20252
Bisphenol A4005 Sep 20252
Boron4005 Sep 20252
Bromate4005 Sep 20252
Cadmium4005 Sep 20252
Chlorfenvinphos4005 Sep 20252
Chloride4005 Sep 20252
Chromium4005 Sep 20252
Clopyralid4005 Sep 20252
Clostridium Perfringens4005 Sep 20252
Coliform Bacteria35015 Dec 20252
Colony Count @ 22°C31015 Dec 20252
Colour35015 Dec 20252
Conductivity35015 Dec 20252
Copper4005 Sep 20252
Cyanide4005 Sep 20252
Cypermethrin4005 Sep 20252
Dichlobenil4005 Sep 20252
Dichlorprop4005 Sep 20252
Diflufenican4005 Sep 20252
Diuron4005 Sep 20252
E. coli35015 Dec 20252
Enterococci35115 Dec 20252
Fluoride4005 Sep 20252
Free Chlorine35015 Dec 20252
Glyphosate4005 Sep 20252
Haloacetic acids (Sum of 5 HAAs)4005 Sep 20252
Iron35015 Dec 20252
Isoproturon4005 Sep 20252
Lead4005 Sep 20252
Linuron4005 Sep 20252
Manganese4005 Sep 20252
MCPA4005 Sep 20252
Mecoprop4005 Sep 20252
Mercury4005 Sep 20252
Metaldehyde4005 Sep 20252
Nickel4005 Sep 20252
Nitrate4005 Sep 20252
Nitrite (at tap)4005 Sep 20252
Odour33015 Dec 20252
PAH4005 Sep 20252
Pendimethalin4005 Sep 20252
Pesticides - Total4005 Sep 20252
pH35015 Dec 20252
Propyzamide4005 Sep 20252
Selenium4005 Sep 20252
Simazine4005 Sep 20252
Sodium4005 Sep 20252
Sulphate4005 Sep 20252
Sum of PFAS (sum of 20)4005 Sep 20252
Taste32015 Dec 20252
Tetrachloroethene & Trichloroethene4005 Sep 20252
Total Chlorine35015 Dec 20252
Total Organic Carbon4005 Sep 20252
Triclopyr4005 Sep 20252
Trihalomethanes(Total)4005 Sep 20252
Turbidity (at tap)35015 Dec 20252

Showing 68 of 68 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
15 Sep 2025Aluminium209ug/l200Ballinasloe Public Supply
1200PUB1004		198917
01 Sep 2025Enterococci1100ml0SRRWSS - Killeglan
2600PUB1004		25444823
04 Feb 2025Aluminium243ug/l200SRRWSS - Killeglan
2600PUB1004		25440447

Common questions

Frequently asked questions

Is Ballinasloe 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 Ballinasloe?

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 Ballinasloe?

In 2025, monitoring data for 2 Water Supply Zones mapped to Ballinasloe included 697 results across 68 parameters. The separate EPA-listed exceedance dataset contains 3 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Ballinasloe?

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 Ballinasloe

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

AthloneWestmeath · approximately 21.8 kmLoughreaGalway · approximately 27.6 kmRoscommonRoscommon · approximately 33.2 kmTuamGalway · approximately 46.9 kmOranmoreGalway · approximately 47.7 kmTullamoreOffaly · approximately 48.8 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Ballinasloe. 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