WaterCheck Ireland

Tullamore Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Tullamore contain 824 monitoring results across 68 parameters in 2025.

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

The most frequently listed were Colony Count @ 22°C (1) and Lead (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
3
824Monitoring results
68Parameters tested
2EPA-listed exceedances
39Samples

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

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 ug/l
2025 maximum19 ug/l
Measurements in 20256

1 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

12 numeric measurements available; 18 text-only records retained in JSON.

Nitrate

2025 median12.59
2025 maximum21.88
Measurements in 20256

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

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

E. coli

2025 median0
2025 maximum0
Measurements in 202539

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum0 100ml
Measurements in 202539

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

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

Fluoride

2025 median0.74
2025 maximum0.83
Measurements in 20256

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

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

Iron

2025 median19.5
2025 maximum28
Measurements in 202539

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

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

Arsenic

2025 median—
2025 maximum—
Measurements in 20256

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

0 numeric measurements available; 30 text-only records retained in JSON.

2025824 results · 2 listed exceedances
Total results — independent scale
0 426.5 853 853 2021 758 2022 839 2023 844 2024 824 2025
Listed exceedances per 1,000 results — independent scale
0.000 2.345 4.689 4.689 2021 2.639 2022 3.576 2023 2.370 2024 2.427 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
2021853546544.689
2022758386422.639
2023839426433.576
2024844426422.370
2025824396822.427

Year-to-year detail

2025 compared with 2024

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

Results
2024844
2025824
-20
Listed exceedances
20242
20252
0
Samples
202442
202539
-3
Parameters
202464
202568
+4

Parameters with EPA-listed exceedances

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

Colony Count @ 22°C

1 listed exceedance records / 33 tests3.03%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
460 1ml
Reported limit
100 1ml
Records with this unit/limit pair
1
Latest exceedance
26 Jun 2025

Lead

1 listed exceedance records / 6 tests16.67%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
19 ug/l
Reported limit
10 ug/l
Records with this unit/limit pair
1
Latest exceedance
22 Oct 2025

Across the year

When were listed exceedances recorded?

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

Lead22 Oct 2025
19 ug/lReported result
10 ug/lReported limit
Tullamore South and ClonasleeWater supply
JanFebMarAprMayJunJulAugSepOctNovDecColony Count @ 22°CLead22 Oct 2025 — Lead: 19 ug/l; reported limit 10; Tullamore South and Clonaslee; sample 8492/2510302/0326 Jun 2025 — Colony Count @ 22°C: 460 1ml; reported limit 100; Rahan - Agall/Hollimshill PWS; sample 8492/2506248/03

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.

Tullamore North PWS

53.69% geographic overlap with the Tullamore Built Up Area.

Technical mapping details
EDEN code
2500PUB1025
Local authority
Offaly
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Tullamore South And Clonaslee

19.85% geographic overlap with the Tullamore Built Up Area.

Technical mapping details
EDEN code
2500PUB1020
Local authority
Offaly
Page totals
Included
Spatial rank
2
Historical EPA scheme
Available
Latest monitoring year
2025
Rahan - Agall/Hollimshill P.W.S.

2.26% geographic overlap with the Tullamore Built Up Area.

Technical mapping details
EDEN code
2500PUB1015
Local authority
Offaly
Page totals
Included
Spatial rank
3
Historical EPA scheme
Available
Latest monitoring year
2025

Detailed data

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

68 parameter rows2 listed exceedance records39 samples
Show detailed data68 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-dichloroethane6022 Oct 20253
2,3,6-trichlorobenzoic acid6022 Oct 20253
2,4-D6022 Oct 20253
Acrylamide1022 Oct 20251
Aluminium17022 Oct 20253
Ammonium6022 Oct 20253
Antimony6022 Oct 20253
Arsenic6022 Oct 20253
Atrazine6022 Oct 20253
Bentazone6022 Oct 20253
Benzene6022 Oct 20253
Benzo(a)pyrene6022 Oct 20253
Bisphenol A6022 Oct 20253
Boron6022 Oct 20253
Bromate6022 Oct 20253
Cadmium6022 Oct 20253
Chlorfenvinphos6022 Oct 20253
Chloride6022 Oct 20253
Chromium6022 Oct 20253
Clopyralid6022 Oct 20253
Clostridium Perfringens6022 Oct 20253
Coliform Bacteria39021 Nov 20253
Colony Count @ 22°C33121 Nov 20253
Colour39021 Nov 20253
Conductivity39021 Nov 20253
Copper6022 Oct 20253
Cyanide5021 Aug 20253
Cypermethrin6022 Oct 20253
Dichlobenil6022 Oct 20253
Dichlorprop6022 Oct 20253
Diflufenican6022 Oct 20253
Diuron6022 Oct 20253
E. coli39021 Nov 20253
Enterococci39021 Nov 20253
Fluoride6022 Oct 20253
Free Chlorine39021 Nov 20253
Glyphosate6022 Oct 20253
Haloacetic acids (Sum of 5 HAAs)6022 Oct 20253
Iron39021 Nov 20253
Isoproturon6022 Oct 20253
Lead6122 Oct 20253
Linuron6022 Oct 20253
Manganese6022 Oct 20253
MCPA6022 Oct 20253
Mecoprop6022 Oct 20253
Mercury6022 Oct 20253
Metaldehyde6022 Oct 20253
Nickel6022 Oct 20253
Nitrate6022 Oct 20253
Nitrite (at tap)6022 Oct 20253
Odour33021 Nov 20253
PAH6022 Oct 20253
Pendimethalin6022 Oct 20253
Pesticides - Total6022 Oct 20253
pH39021 Nov 20253
Propyzamide6022 Oct 20253
Selenium6022 Oct 20253
Simazine6022 Oct 20253
Sodium6022 Oct 20253
Sulphate6022 Oct 20253
Sum of PFAS (sum of 20)6022 Oct 20253
Taste33021 Nov 20253
Tetrachloroethene & Trichloroethene6022 Oct 20253
Total Chlorine39021 Nov 20253
Total Organic Carbon6022 Oct 20253
Triclopyr6022 Oct 20253
Trihalomethanes(Total)6022 Oct 20253
Turbidity (at tap)39021 Nov 20253

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
22 Oct 2025Lead19ug/l10Tullamore South and Clonaslee
2500PUB1020		8492/2510302/03
26 Jun 2025Colony Count @ 22°C4601ml100Rahan - Agall/Hollimshill PWS
2500PUB1015		8492/2506248/03

Common questions

Frequently asked questions

Is Tullamore 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 Tullamore?

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 Tullamore?

In 2025, monitoring data for 3 Water Supply Zones mapped to Tullamore included 824 results across 68 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 Tullamore?

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 Tullamore

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

PortarlingtonLaois · approximately 24.1 kmMullingarWestmeath · approximately 29.2 kmPortlaoiseLaois · approximately 29.4 kmEdenderryOffaly · approximately 29.6 kmMonasterevinKildare · approximately 32.4 kmAthloneWestmeath · approximately 34.1 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Tullamore. 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