WaterCheck Ireland

Newcastle West Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Newcastle West contain 341 monitoring results across 67 parameters in 2025.

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

The most frequently listed parameter was Trihalomethanes(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
Newcastle West Water Supply
Geographic overlap
85.28%
341Monitoring results
67Parameters tested
1EPA-listed exceedances
18Samples

The Newcastle West Built Up Area overlaps Newcastle West Water Supply across approximately 85.28% of its land area.

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

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 20252

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; 10 text-only records retained in JSON.

Nitrate

2025 median8.315
2025 maximum8.92
Measurements in 20252

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

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

E. coli

2025 median0
2025 maximum0
Measurements in 202517

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum0 100ml
Measurements in 202517

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

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

Fluoride

2025 median0.3
2025 maximum0.3
Measurements in 20252

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

1 numeric measurements available; 9 text-only records retained in JSON.

Iron

2025 median—
2025 maximum—
Measurements in 202517

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

1 numeric measurements available; 88 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20252

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; 10 text-only records retained in JSON.

2025341 results · 1 listed exceedances
Total results — independent scale
0 183 366 336 2021 336 2022 354 2023 366 2024 341 2025
Listed exceedances per 1,000 results — independent scale
0.000 4.237 8.475 5.952 2021 5.952 2022 8.475 2023 2.732 2024 2.933 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
2021336186425.952
2022336186425.952
2023354186538.475
2024366246712.732
2025341186712.933

Year-to-year detail

2025 compared with 2024

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

Results
2024366
2025341
-25
Listed exceedances
20241
20251
0
Samples
202424
202518
-6
Parameters
202467
202567
0

Parameters with EPA-listed exceedances

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

Trihalomethanes(Total)

1 listed exceedance records / 2 tests50.00%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
118 ug/l
Reported limit
100 ug/l
Records with this unit/limit pair
1
Latest exceedance
13 Oct 2025

Across the year

When were listed exceedances recorded?

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

Trihalomethanes(Total)13 Oct 2025
118 ug/lReported result
100 ug/lReported limit
Newcastle West PWSWater supply
JanFebMarAprMayJunJulAugSepOctNovDecTrihalomethanes(Total)13 Oct 2025 — Trihalomethanes(Total): 118 ug/l; reported limit 100; Newcastle West PWS; sample 25372146

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.

Newcastle West Water Supply

85.28% geographic overlap with the Newcastle West Built Up Area.

Technical mapping details
EDEN code
1900PUB1042
Local authority
Limerick
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.

67 parameter rows1 listed exceedance records18 samples
Show detailed data67 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-dichloroethane2013 Oct 20251
2,3,6-trichlorobenzoic acid2013 Oct 20251
2,4-D2013 Oct 20251
Acrylamide2013 Oct 20251
Aluminium16001 Dec 20251
Ammonium2013 Oct 20251
Antimony2013 Oct 20251
Arsenic2013 Oct 20251
Atrazine2013 Oct 20251
Bentazone2013 Oct 20251
Benzene2013 Oct 20251
Benzo(a)pyrene2013 Oct 20251
Boron2013 Oct 20251
Bromate2013 Oct 20251
Cadmium2013 Oct 20251
Chlorfenvinphos2013 Oct 20251
Chloride2013 Oct 20251
Chromium2013 Oct 20251
Clopyralid2013 Oct 20251
Clostridium Perfringens2013 Oct 20251
Coliform Bacteria17001 Dec 20251
Colony Count @ 22°C17001 Dec 20251
Colour17001 Dec 20251
Conductivity17001 Dec 20251
Copper2013 Oct 20251
Cryptosporidium1019 Nov 20251
Cyanide2013 Oct 20251
Cypermethrin2013 Oct 20251
Dichlobenil2013 Oct 20251
Dichlorprop2013 Oct 20251
Diflufenican2013 Oct 20251
Diuron2013 Oct 20251
E. coli17001 Dec 20251
Enterococci17001 Dec 20251
Fluoride2013 Oct 20251
Free Chlorine17001 Dec 20251
Giardia1019 Nov 20251
Glyphosate2013 Oct 20251
Iron17001 Dec 20251
Isoproturon2013 Oct 20251
Lead2013 Oct 20251
Linuron2013 Oct 20251
Manganese2013 Oct 20251
MCPA2013 Oct 20251
Mecoprop2013 Oct 20251
Mercury2013 Oct 20251
Metaldehyde2013 Oct 20251
Nickel2013 Oct 20251
Nitrate2013 Oct 20251
Nitrite (at tap)2013 Oct 20251
Odour17001 Dec 20251
PAH2013 Oct 20251
Pendimethalin2013 Oct 20251
Pesticides - Total2013 Oct 20251
pH17001 Dec 20251
Propyzamide2013 Oct 20251
Selenium2013 Oct 20251
Simazine2013 Oct 20251
Sodium2013 Oct 20251
Sulphate2013 Oct 20251
Taste17001 Dec 20251
Tetrachloroethene & Trichloroethene2013 Oct 20251
Total Chlorine17001 Dec 20251
Total Organic Carbon2013 Oct 20251
Triclopyr2013 Oct 20251
Trihalomethanes(Total)2113 Oct 20251
Turbidity (at tap)17001 Dec 20251

Showing 67 of 67 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
13 Oct 2025Trihalomethanes(Total)118ug/l100Newcastle West PWS
1900PUB1042		25372146

Common questions

Frequently asked questions

Is Newcastle West 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 Newcastle West?

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 Newcastle West?

In 2025, monitoring data for the Water Supply Zone mapped to Newcastle West included 341 results across 67 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 Newcastle West?

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 Newcastle West

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

ShannonClare · approximately 31.1 kmLimerickLimerick · approximately 37.1 kmEnnisClare · approximately 44.2 kmMallowCork · approximately 45.0 kmTraleeKerry · approximately 48.2 kmKillarneyKerry · approximately 53.1 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Newcastle West. 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