WaterCheck Ireland

Tullow Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Tullow contain 664 monitoring results across 70 parameters in 2025.

The separate EPA exceedance dataset contains 1 listed exceedance records across 1 parameter.

The most frequently listed parameter was Iron (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
664Monitoring results
70Parameters tested
1EPA-listed exceedances
58Samples

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

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

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

Nitrate

2025 median12.505
2025 maximum17.4
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

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

E. coli

2025 median0
2025 maximum0
Measurements in 202530

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

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

Coliform Bacteria

2025 median0
2025 maximum0
Measurements in 202530

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

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

Fluoride

2025 median0.8 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.

Open this chart to load the measurements.

Numeric resultEPA-listed exceedance

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

Iron

2025 median39 ug/l
2025 maximum242 ug/l
Measurements in 202530

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

18 numeric measurements available; 110 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

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

2025664 results · 1 listed exceedances
Total results — independent scale
0 359.5 719 719 2021 565 2022 485 2023 446 2024 664 2025
Listed exceedances per 1,000 results — independent scale
0.000 4.425 8.850 1.391 2021 8.850 2022 2.062 2023 0.000 2024 1.506 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
2021719646611.391
2022565506658.850
2023485526712.062
2024446256700.000
2025664587011.506

Year-to-year detail

2025 compared with 2024

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

Results
2024446
2025664
+218
Listed exceedances
20240
20251
+1
Samples
202425
202558
+33
Parameters
202467
202570
+3

Parameters with EPA-listed exceedances

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

Iron

1 listed exceedance records / 30 tests3.33%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
242 ug/l
Reported limit
200 ug/l
Records with this unit/limit pair
1
Latest exceedance
18 Nov 2025

Across the year

When were listed exceedances recorded?

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

Iron18 Nov 2025
242 ug/lReported result
200 ug/lReported limit
Carlow North RegionalWater supply
JanFebMarAprMayJunJulAugSepOctNovDecIron18 Nov 2025 — Iron: 242 ug/l; reported limit 200; Carlow North Regional; sample 0587/2511531/01

1 listed exceedance records across 1 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.

Tullow

45.58% geographic overlap with the Tullow Built Up Area.

Technical mapping details
EDEN code
0100PUB1131
Local authority
Carlow
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Carlow North Regional

44.63% geographic overlap with the Tullow Built Up Area.

Technical mapping details
EDEN code
0100PUB1142
Local authority
Carlow
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.

70 parameter rows1 listed exceedance records58 samples
Show detailed data70 parameters · 1 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-dichloroethane4004 Dec 20252
2,3,6-trichlorobenzoic acid4004 Dec 20252
2,4-D4004 Dec 20252
Acrylamide2004 Dec 20251
Aluminium24011 Dec 20252
Ammonium4004 Dec 20252
Antimony4004 Dec 20252
Arsenic4004 Dec 20252
Atrazine4004 Dec 20252
Bentazone4004 Dec 20252
Benzene4004 Dec 20252
Benzo(a)pyrene4004 Dec 20252
Bisphenol A4004 Dec 20252
Boron4004 Dec 20252
Bromate4004 Dec 20252
Cadmium4004 Dec 20252
Chlorfenvinphos4004 Dec 20252
Chloride4004 Dec 20252
Chromium4004 Dec 20252
Clopyralid4004 Dec 20252
Clostridium Perfringens4004 Dec 20252
Coliform Bacteria30011 Dec 20252
Colony Count @ 22°C26011 Dec 20252
Colour30011 Dec 20252
Conductivity30011 Dec 20252
Copper4004 Dec 20252
Cryptosporidium24004 Dec 20252
Cyanide4004 Dec 20252
Cypermethrin4004 Dec 20252
Dichlobenil4004 Dec 20252
Dichlorprop4004 Dec 20252
Diflufenican4004 Dec 20252
Diuron4004 Dec 20252
E. coli30011 Dec 20252
Enterococci30011 Dec 20252
Fluoride4004 Dec 20252
Free Chlorine30011 Dec 20252
Giardia24004 Dec 20252
Glyphosate4004 Dec 20252
Haloacetic acids (Sum of 5 HAAs)4004 Dec 20252
Iron30111 Dec 20252
Isoproturon4004 Dec 20252
Lead4004 Dec 20252
Linuron4004 Dec 20252
Manganese4004 Dec 20252
MCPA4004 Dec 20252
Mecoprop4004 Dec 20252
Mercury4004 Dec 20252
Metaldehyde4004 Dec 20252
Nickel4004 Dec 20252
Nitrate4004 Dec 20252
Nitrite (at tap)4004 Dec 20252
Odour26011 Dec 20252
PAH4004 Dec 20252
Pendimethalin4004 Dec 20252
Pesticides - Total4004 Dec 20252
pH30011 Dec 20252
Propyzamide4004 Dec 20252
Selenium4004 Dec 20252
Simazine4004 Dec 20252
Sodium4004 Dec 20252
Sulphate4004 Dec 20252
Sum of PFAS (sum of 20)4004 Dec 20252
Taste26011 Dec 20252
Tetrachloroethene & Trichloroethene4004 Dec 20252
Total Chlorine30011 Dec 20252
Total Organic Carbon4004 Dec 20252
Triclopyr4004 Dec 20252
Trihalomethanes(Total)4004 Dec 20252
Turbidity (at tap)30011 Dec 20252

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
18 Nov 2025Iron242ug/l200Carlow North Regional
0100PUB1142		0587/2511531/01

Common questions

Frequently asked questions

Is Tullow 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 Tullow?

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 Tullow?

In 2025, monitoring data for 2 Water Supply Zones mapped to Tullow included 664 results across 70 parameters. The separate EPA-listed exceedance dataset contains 1 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Tullow?

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 Tullow

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

CarlowCarlow · approximately 13.1 kmAthyKildare · approximately 26.7 kmGoreyWexford · approximately 33.0 kmEnniscorthyWexford · approximately 35.2 kmKilkennyKilkenny · approximately 38.3 kmArklowWicklow · approximately 38.9 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Tullow. 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