WaterCheck Ireland

Clonmel Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Clonmel contain 2,068 monitoring results across 70 parameters in 2025.

The separate EPA exceedance dataset contains 12 listed exceedance records across 5 parameters.

The most frequently listed were pH (7), Aluminium (2) and Coliform Bacteria (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
7
2,068Monitoring results
70Parameters tested
12EPA-listed exceedances
161Samples

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

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 maximum5
Measurements in 202514

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

14 numeric measurements available; 42 text-only records retained in JSON.

Nitrate

2025 median16.955
2025 maximum23.91
Measurements in 202514

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

36 numeric measurements available; 20 text-only records retained in JSON.

E. coli

2025 median0
2025 maximum0
Measurements in 202589

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum4 100ml
Measurements in 202589

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.

Open this chart to load the measurements.

Numeric resultEPA-listed exceedance

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

Fluoride

2025 median0.7
2025 maximum1
Measurements in 202514

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

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

Iron

2025 median21 ug/l
2025 maximum294 ug/l
Measurements in 202589

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.

Open this chart to load the measurements.

Numeric resultEPA-listed exceedance

166 numeric measurements available; 242 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 202514

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; 56 text-only records retained in JSON.

20252,068 results · 12 listed exceedances
Total results — independent scale
0 1,034 2,068 1,495 2021 1,474 2022 1,803 2023 1,797 2024 2,068 2025
Listed exceedances per 1,000 results — independent scale
0.000 2.901 5.803 2.676 2021 3.392 2022 4.437 2023 4.452 2024 5.803 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
20211,4951006642.676
20221,4741086653.392
20231,8031586784.437
20241,7971276884.452
20252,06816170125.803

Year-to-year detail

2025 compared with 2024

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

Results
20241,797
20252,068
+271
Listed exceedances
20248
202512
+4
Samples
2024127
2025161
+34
Parameters
202468
202570
+2

Parameters with EPA-listed exceedances

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

pH

7 listed exceedance records / 89 tests7.87%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
6.31 pH Units
Reported limit
9.5 pH Units
Records with this unit/limit pair
7
Latest exceedance
18 Nov 2025

Aluminium

2 listed exceedance records / 55 tests3.64%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
736 ug/l
Reported limit
200 ug/l
Records with this unit/limit pair
2
Latest exceedance
10 Dec 2025

Coliform Bacteria

1 listed exceedance records / 89 tests1.12%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
4 100ml
Reported limit
0 100ml
Records with this unit/limit pair
1
Latest exceedance
06 Nov 2025

Colony Count @ 22°C

1 listed exceedance records / 75 tests1.33%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
116 1ml
Reported limit
100 1ml
Records with this unit/limit pair
1
Latest exceedance
05 Dec 2025

Iron

1 listed exceedance records / 89 tests1.12%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
294 ug/l
Reported limit
200 ug/l
Records with this unit/limit pair
1
Latest exceedance
02 Sep 2025

Across the year

When were listed exceedances recorded?

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

Aluminium10 Dec 2025
736 ug/lReported result
200 ug/lReported limit
Ardfinnan RegionalWater supply
JanFebMarAprMayJunJulAugSepOctNovDecAluminiumColiform BacteriaColony Count @ 22°CIronpH10 Dec 2025 — Aluminium: 736 ug/l; reported limit 200; Ardfinnan Regional; sample 8671/2512752/0108 Dec 2025 — Aluminium: 376 ug/l; reported limit 200; Ardfinnan Regional; sample 8671/2512741/0205 Dec 2025 — Colony Count @ 22°C: 116 1ml; reported limit 100; Clonmel Poulavanogue; sample 8671/2512736/0118 Nov 2025 — pH: 6.03 pH Units; reported limit 9.5; Glenagad; sample 4620/2511739/0106 Nov 2025 — Coliform Bacteria: 4 100ml; reported limit 0; GLENARY; sample 8671/2511693/0108 Oct 2025 — pH: 5.98 pH Units; reported limit 9.5; Lyrenaleara; sample 4620/2510685/0102 Sep 2025 — Iron: 294 ug/l; reported limit 200; GLENARY; sample 8671/2509567/0513 Aug 2025 — pH: 5.89 pH Units; reported limit 9.5; Glenagad; sample 4620/2508622/0124 Jul 2025 — pH: 5.9 pH Units; reported limit 9.5; Lyrenaleara; sample 4620/2507603/0501 Apr 2025 — pH: 6.31 pH Units; reported limit 9.5; Templetney/Brackford Bridge PWS; sample 8671/2504387/0114 Feb 2025 — pH: 5.23 pH Units; reported limit 9.5; Lyrenaleara; sample 4620/2502480/0314 Feb 2025 — pH: 5.24 pH Units; reported limit 9.5; Glenagad; sample 4620/2502480/02

12 listed exceedance records across 5 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.

Glenary

52.36% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
2900PUB0134
Local authority
Tipperary
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Moanroe Borehole

11.07% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
2900PUB0151
Local authority
Tipperary
Page totals
Included
Spatial rank
2
Historical EPA scheme
Available
Latest monitoring year
2025
Clonmel Poulavanogue

10.45% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
2900PUB0109
Local authority
Tipperary
Page totals
Included
Spatial rank
3
Historical EPA scheme
Available
Latest monitoring year
2025
Ardfinnan Regional

2.48% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
2900PUB0102
Local authority
Tipperary
Page totals
Included
Spatial rank
4
Historical EPA scheme
Available
Latest monitoring year
2025
Glenagad

2.40% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
3100PUB1120
Local authority
Waterford
Page totals
Included
Spatial rank
5
Historical EPA scheme
Available
Latest monitoring year
2025
Templetney Borehole

1.88% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
2900PUB0152
Local authority
Tipperary
Page totals
Included
Spatial rank
6
Historical EPA scheme
Available
Latest monitoring year
2025
Lyranearla

1.53% geographic overlap with the Clonmel Built Up Area.

Technical mapping details
EDEN code
3100PUB1115
Local authority
Waterford
Page totals
Included
Spatial rank
7
Historical EPA scheme
Available
Latest monitoring year
2025

Detailed data

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

70 parameter rows12 listed exceedance records161 samples
Show detailed data70 parameters · 12 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-dichloroethane14010 Nov 20257
2,3,6-trichlorobenzoic acid14010 Nov 20257
2,4-D14010 Nov 20257
Acrylamide12010 Nov 20255
Aluminium55210 Dec 20257
Ammonium14010 Nov 20257
Antimony14010 Nov 20257
Arsenic14010 Nov 20257
Atrazine14010 Nov 20257
Bentazone14010 Nov 20257
Benzene14010 Nov 20257
Benzo(a)pyrene14010 Nov 20257
Bisphenol A14010 Nov 20257
Boron14010 Nov 20257
Bromate14010 Nov 20257
Cadmium14010 Nov 20257
Chlorfenvinphos14010 Nov 20257
Chloride14010 Nov 20257
Chromium14010 Nov 20257
Clopyralid14010 Nov 20257
Clostridium Perfringens14010 Nov 20257
Coliform Bacteria89110 Dec 20257
Colony Count @ 22°C75110 Dec 20257
Colour89010 Dec 20257
Conductivity89010 Dec 20257
Copper14010 Nov 20257
Cryptosporidium72023 Dec 20253
Cyanide14010 Nov 20257
Cypermethrin14010 Nov 20257
Dichlobenil14010 Nov 20257
Dichlorprop14010 Nov 20257
Diflufenican14010 Nov 20257
Diuron14010 Nov 20257
E. coli89010 Dec 20257
Enterococci89010 Dec 20257
Fluoride14010 Nov 20257
Free Chlorine89010 Dec 20257
Giardia72023 Dec 20253
Glyphosate14010 Nov 20257
Haloacetic acids (Sum of 5 HAAs)14010 Nov 20257
Iron89110 Dec 20257
Isoproturon14010 Nov 20257
Lead14010 Nov 20257
Linuron14010 Nov 20257
Manganese14010 Nov 20257
MCPA14010 Nov 20257
Mecoprop14010 Nov 20257
Mercury14010 Nov 20257
Metaldehyde14010 Nov 20257
Nickel14010 Nov 20257
Nitrate14010 Nov 20257
Nitrite (at tap)14010 Nov 20257
Odour75010 Dec 20257
PAH14010 Nov 20257
Pendimethalin14010 Nov 20257
Pesticides - Total14010 Nov 20257
pH89710 Dec 20257
Propyzamide14010 Nov 20257
Selenium14010 Nov 20257
Simazine14010 Nov 20257
Sodium14010 Nov 20257
Sulphate14010 Nov 20257
Sum of PFAS (sum of 20)14010 Nov 20257
Taste75010 Dec 20257
Tetrachloroethene & Trichloroethene14010 Nov 20257
Total Chlorine89010 Dec 20257
Total Organic Carbon14010 Nov 20257
Triclopyr14010 Nov 20257
Trihalomethanes(Total)14010 Nov 20257
Turbidity (at tap)89010 Dec 20257

Showing 70 of 70 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
10 Dec 2025Aluminium736ug/l200Ardfinnan Regional
2900PUB0102		8671/2512752/01
08 Dec 2025Aluminium376ug/l200Ardfinnan Regional
2900PUB0102		8671/2512741/02
05 Dec 2025Colony Count @ 22°C1161ml100Clonmel Poulavanogue
2900PUB0109		8671/2512736/01
18 Nov 2025pH6.03pH Units9.5Glenagad
3100PUB1120		4620/2511739/01
06 Nov 2025Coliform Bacteria4100ml0GLENARY
2900PUB0134		8671/2511693/01
08 Oct 2025pH5.98pH Units9.5Lyrenaleara
3100PUB1115		4620/2510685/01
02 Sep 2025Iron294ug/l200GLENARY
2900PUB0134		8671/2509567/05
13 Aug 2025pH5.89pH Units9.5Glenagad
3100PUB1120		4620/2508622/01
24 Jul 2025pH5.9pH Units9.5Lyrenaleara
3100PUB1115		4620/2507603/05
01 Apr 2025pH6.31pH Units9.5Templetney/Brackford Bridge PWS
2900PUB0152		8671/2504387/01
14 Feb 2025pH5.23pH Units9.5Lyrenaleara
3100PUB1115		4620/2502480/03
14 Feb 2025pH5.24pH Units9.5Glenagad
3100PUB1120		4620/2502480/02

Common questions

Frequently asked questions

Is Clonmel 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 Clonmel?

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 Clonmel?

In 2025, monitoring data for 7 Water Supply Zones mapped to Clonmel included 2,068 results across 70 parameters. The separate EPA-listed exceedance dataset contains 12 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Clonmel?

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 Clonmel

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

Carrick-on-SuirTipperary · approximately 19.9 kmDungarvanWaterford · approximately 29.6 kmTipperaryTipperary · approximately 34.1 kmThurlesTipperary · approximately 36.5 kmWaterfordWaterford · approximately 41.5 kmTramoreWaterford · approximately 42.7 km

Connected by mapped supply

Places sharing this Water Supply Zone

These published places share at least one Water Supply Zone used in this page's headline figures.

Carrick-on-SuirTempletney Borehole

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Clonmel. 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