WaterCheck Ireland

Thurles Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Thurles contain 516 monitoring results across 68 parameters in 2025.

The separate EPA exceedance dataset contains 4 listed exceedance records across 3 parameters.

The most frequently listed were Colony Count @ 22°C (2), MCPA (1) and Pesticides - Total (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 Zone
Thurles Regional PWS
Geographic overlap
74.37%
516Monitoring results
68Parameters tested
4EPA-listed exceedances
26Samples

The Thurles Built Up Area overlaps Thurles Regional PWS across approximately 74.37% of its land area.

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

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 median2
2025 maximum2
Measurements in 20253

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

2 numeric measurements available; 13 text-only records retained in JSON.

Nitrate

2025 median4.47
2025 maximum5.4
Measurements in 20253

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

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

E. coli

2025 median0
2025 maximum0
Measurements in 202526

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

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

Coliform Bacteria

2025 median0
2025 maximum0
Measurements in 202526

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

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

Fluoride

2025 median0.7
2025 maximum0.7
Measurements in 20253

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

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

Iron

2025 median18
2025 maximum18
Measurements in 202526

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

19 numeric measurements available; 99 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20253

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; 15 text-only records retained in JSON.

2025516 results · 4 listed exceedances
Total results — independent scale
0 258 516 482 2021 417 2022 457 2023 468 2024 516 2025
Listed exceedances per 1,000 results — independent scale
0.000 3.876 7.752 2.075 2021 0.000 2022 4.376 2023 4.274 2024 7.752 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
2021482266412.075
2022417216400.000
2023457226524.376
2024468236524.274
2025516266847.752

Year-to-year detail

2025 compared with 2024

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

Results
2024468
2025516
+48
Listed exceedances
20242
20254
+2
Samples
202423
202526
+3
Parameters
202465
202568
+3

Parameters with EPA-listed exceedances

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

Colony Count @ 22°C

2 listed exceedance records / 23 tests8.70%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
300 1ml
Reported limit
100 1ml
Records with this unit/limit pair
2
Latest exceedance
22 May 2025

MCPA

1 listed exceedance records / 3 tests33.33%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
1.106 µg/l
Reported limit
0.1 µg/l
Records with this unit/limit pair
1
Latest exceedance
06 Oct 2025

Pesticides - Total

1 listed exceedance records / 3 tests33.33%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
1.106 ug/l
Reported limit
0.5 ug/l
Records with this unit/limit pair
1
Latest exceedance
06 Oct 2025

Across the year

When were listed exceedances recorded?

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

MCPA06 Oct 2025
1.106 µg/lReported result
0.1 µg/lReported limit
Thurles RegionalWater supply
JanFebMarAprMayJunJulAugSepOctNovDecColony Count @ 22°CMCPAPesticides - Total06 Oct 2025 — MCPA: 1.106 µg/l; reported limit 0.1; Thurles Regional; sample 8671/2510619/0206 Oct 2025 — Pesticides - Total: 1.106 ug/l; reported limit 0.5; Thurles Regional; sample 8671/2510619/0222 May 2025 — Colony Count @ 22°C: 300 1ml; reported limit 100; Thurles Regional; sample 8671/2505437/0105 Feb 2025 — Colony Count @ 22°C: 300 1ml; reported limit 100; Thurles Regional; sample 8671/2502342/02

4 listed exceedance records across 3 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.

Thurles Regional PWS

74.37% geographic overlap with the Thurles Built Up Area.

Technical mapping details
EDEN code
3700PUB1042
Local authority
Tipperary
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025

Detailed data

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

68 parameter rows4 listed exceedance records26 samples
Show detailed data68 parameters · 4 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-dichloroethane3006 Oct 20251
2,3,6-trichlorobenzoic acid3006 Oct 20251
2,4-D3006 Oct 20251
Acrylamide3006 Oct 20251
Aluminium25001 Dec 20251
Ammonium3006 Oct 20251
Antimony3006 Oct 20251
Arsenic3006 Oct 20251
Atrazine3006 Oct 20251
Bentazone3006 Oct 20251
Benzene3006 Oct 20251
Benzo(a)pyrene3006 Oct 20251
Bisphenol A3006 Oct 20251
Boron3006 Oct 20251
Bromate3006 Oct 20251
Cadmium3006 Oct 20251
Chlorfenvinphos3006 Oct 20251
Chloride3006 Oct 20251
Chromium3006 Oct 20251
Clopyralid3006 Oct 20251
Clostridium Perfringens3006 Oct 20251
Coliform Bacteria26001 Dec 20251
Colony Count @ 22°C23201 Dec 20251
Colour26001 Dec 20251
Conductivity26001 Dec 20251
Copper3006 Oct 20251
Cyanide3006 Oct 20251
Cypermethrin3006 Oct 20251
Dichlobenil3006 Oct 20251
Dichlorprop3006 Oct 20251
Diflufenican3006 Oct 20251
Diuron3006 Oct 20251
E. coli26001 Dec 20251
Enterococci26001 Dec 20251
Fluoride3006 Oct 20251
Free Chlorine26001 Dec 20251
Glyphosate3006 Oct 20251
Haloacetic acids (Sum of 5 HAAs)3006 Oct 20251
Iron26001 Dec 20251
Isoproturon3006 Oct 20251
Lead3006 Oct 20251
Linuron3006 Oct 20251
Manganese3006 Oct 20251
MCPA3106 Oct 20251
Mecoprop3006 Oct 20251
Mercury3006 Oct 20251
Metaldehyde3006 Oct 20251
Nickel3006 Oct 20251
Nitrate3006 Oct 20251
Nitrite (at tap)3006 Oct 20251
Odour23001 Dec 20251
PAH3006 Oct 20251
Pendimethalin3006 Oct 20251
Pesticides - Total3106 Oct 20251
pH26001 Dec 20251
Propyzamide3006 Oct 20251
Selenium3006 Oct 20251
Simazine3006 Oct 20251
Sodium3006 Oct 20251
Sulphate3006 Oct 20251
Sum of PFAS (sum of 20)3006 Oct 20251
Taste23001 Dec 20251
Tetrachloroethene & Trichloroethene3006 Oct 20251
Total Chlorine26001 Dec 20251
Total Organic Carbon3006 Oct 20251
Triclopyr3006 Oct 20251
Trihalomethanes(Total)3006 Oct 20251
Turbidity (at tap)26001 Dec 20251

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
06 Oct 2025MCPA1.106µg/l0.1Thurles Regional
3700PUB1042		8671/2510619/02
06 Oct 2025Pesticides - Total1.106ug/l0.5Thurles Regional
3700PUB1042		8671/2510619/02
22 May 2025Colony Count @ 22°C3001ml100Thurles Regional
3700PUB1042		8671/2505437/01
05 Feb 2025Colony Count @ 22°C3001ml100Thurles Regional
3700PUB1042		8671/2502342/02

Common questions

Frequently asked questions

Is Thurles 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 Thurles?

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 Thurles?

In 2025, monitoring data for the Water Supply Zone mapped to Thurles included 516 results across 68 parameters. The separate EPA-listed exceedance dataset contains 4 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Thurles?

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 Thurles

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

RoscreaTipperary · approximately 30.5 kmTipperaryTipperary · approximately 32.7 kmNenaghTipperary · approximately 33.3 kmClonmelTipperary · approximately 36.5 kmKilkennyKilkenny · approximately 38.1 kmCarrick-on-SuirTipperary · approximately 46.1 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Thurles. 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