WaterCheck Ireland

Longford Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Longford contain 926 monitoring results across 68 parameters in 2025.

The separate EPA exceedance dataset contains 5 listed exceedance records across 4 parameters.

The most frequently listed were Coliform Bacteria (2), Colony Count @ 22°C (1) and E. coli (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
926Monitoring results
68Parameters tested
5EPA-listed exceedances
49Samples

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

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 median1.5
2025 maximum2
Measurements in 20255

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

5 numeric measurements available; 21 text-only records retained in JSON.

Nitrate

2025 median11.72
2025 maximum12.91
Measurements in 20255

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

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

E. coli

2025 median0 100ml
2025 maximum1 100ml
Measurements in 202549

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum13 100ml
Measurements in 202549

2 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

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

Fluoride

2025 median0.2
2025 maximum0.2
Measurements in 20255

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

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

Iron

2025 median31.5 ug/l
2025 maximum88 ug/l
Measurements in 202549

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

46 numeric measurements available; 181 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20255

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

5 numeric measurements available; 21 text-only records retained in JSON.

2025926 results · 5 listed exceedances
Total results — independent scale
0 463 926 811 2021 812 2022 885 2023 828 2024 926 2025
Listed exceedances per 1,000 results — independent scale
0.000 6.215 12.429 2.466 2021 7.389 2022 12.429 2023 7.246 2024 5.400 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
2021811566622.466
2022812466467.389
202388544651112.429
2024828436567.246
2025926496855.400

Year-to-year detail

2025 compared with 2024

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

Results
2024828
2025926
+98
Listed exceedances
20246
20255
-1
Samples
202443
202549
+6
Parameters
202465
202568
+3

Parameters with EPA-listed exceedances

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

Coliform Bacteria

2 listed exceedance records / 49 tests4.08%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
13 100ml
Reported limit
0 100ml
Records with this unit/limit pair
2
Latest exceedance
08 Aug 2025

Colony Count @ 22°C

1 listed exceedance records / 44 tests2.27%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
113 1ml
Reported limit
100 1ml
Records with this unit/limit pair
1
Latest exceedance
04 Apr 2025

E. coli

1 listed exceedance records / 49 tests2.04%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
1 100ml
Reported limit
0 100ml
Records with this unit/limit pair
1
Latest exceedance
13 Jun 2025

MCPA

1 listed exceedance records / 5 tests20.00%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
0.344 µg/l
Reported limit
0.1 µg/l
Records with this unit/limit pair
1
Latest exceedance
03 Apr 2025

Across the year

When were listed exceedances recorded?

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

Coliform Bacteria08 Aug 2025
7 100mlReported result
0 100mlReported limit
LANESBOROWater supply
JanFebMarAprMayJunJulAugSepOctNovDecColiform BacteriaColony Count @ 22°CE. coliMCPA08 Aug 2025 — Coliform Bacteria: 7 100ml; reported limit 0; LANESBORO; sample 3560/2508310/0213 Jun 2025 — Coliform Bacteria: 13 100ml; reported limit 0; LONGFORD CENTRAL; sample 3560/2506286/0113 Jun 2025 — E. coli: 1 100ml; reported limit 0; LONGFORD CENTRAL; sample 3560/2506286/0104 Apr 2025 — Colony Count @ 22°C: 113 1ml; reported limit 100; LONGFORD CENTRAL; sample 3560/2504261/0403 Apr 2025 — MCPA: 0.344 µg/l; reported limit 0.1; LONGFORD CENTRAL; sample 3560/2504258/01

5 listed exceedance records across 4 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.

Longford Central

92.53% geographic overlap with the Longford Built Up Area.

Technical mapping details
EDEN code
2000PUB1010
Local authority
Longford
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Lanesboro

7.19% geographic overlap with the Longford Built Up Area.

Technical mapping details
EDEN code
2000PUB1009
Local authority
Longford
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.

68 parameter rows5 listed exceedance records49 samples
Show detailed data68 parameters · 5 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-dichloroethane5008 Aug 20252
2,3,6-trichlorobenzoic acid5008 Aug 20252
2,4-D5008 Aug 20252
Aluminium36010 Dec 20252
Ammonium5008 Aug 20252
Antimony5008 Aug 20252
Arsenic5008 Aug 20252
Atrazine5008 Aug 20252
Bentazone5008 Aug 20252
Benzene5008 Aug 20252
Benzo(a)pyrene5008 Aug 20252
Bisphenol A5008 Aug 20252
Boron5008 Aug 20252
Bromate5008 Aug 20252
Cadmium5008 Aug 20252
Chlorfenvinphos5008 Aug 20252
Chloride5008 Aug 20252
Chromium5008 Aug 20252
Clopyralid5008 Aug 20252
Clostridium Perfringens5008 Aug 20252
Coliform Bacteria49210 Dec 20252
Colony Count @ 22°C44110 Dec 20252
Colour49010 Dec 20252
Conductivity49010 Dec 20252
Copper5008 Aug 20252
Cyanide5008 Aug 20252
Cypermethrin5008 Aug 20252
Dichlobenil5008 Aug 20252
Dichlorprop5008 Aug 20252
Diflufenican5008 Aug 20252
Diuron5008 Aug 20252
E. coli49110 Dec 20252
Enterococci49010 Dec 20252
Fluoride5008 Aug 20252
Free Chlorine49010 Dec 20252
Glyphosate5008 Aug 20252
Haloacetic acids (Sum of 5 HAAs)5008 Aug 20252
Iron49010 Dec 20252
Isoproturon5008 Aug 20252
Lead5008 Aug 20252
Linuron5008 Aug 20252
Manganese5008 Aug 20252
MCPA5108 Aug 20252
Mecoprop5008 Aug 20252
Mercury5008 Aug 20252
Metaldehyde5008 Aug 20252
Microcystin-LR3008 Aug 20251
Nickel5008 Aug 20252
Nitrate5008 Aug 20252
Nitrite (at tap)5008 Aug 20252
Odour44010 Dec 20252
PAH5008 Aug 20252
Pendimethalin5008 Aug 20252
Pesticides - Total5008 Aug 20252
pH49010 Dec 20252
Propyzamide5008 Aug 20252
Selenium5008 Aug 20252
Simazine5008 Aug 20252
Sodium5008 Aug 20252
Sulphate5008 Aug 20252
Sum of PFAS (sum of 20)5008 Aug 20252
Taste44010 Dec 20252
Tetrachloroethene & Trichloroethene5008 Aug 20252
Total Chlorine49010 Dec 20252
Total Organic Carbon5008 Aug 20252
Triclopyr5008 Aug 20252
Trihalomethanes(Total)5008 Aug 20252
Turbidity (at tap)49010 Dec 20252

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
08 Aug 2025Coliform Bacteria7100ml0LANESBORO
2000PUB1009		3560/2508310/02
13 Jun 2025Coliform Bacteria13100ml0LONGFORD CENTRAL
2000PUB1010		3560/2506286/01
13 Jun 2025E. coli1100ml0LONGFORD CENTRAL
2000PUB1010		3560/2506286/01
04 Apr 2025Colony Count @ 22°C1131ml100LONGFORD CENTRAL
2000PUB1010		3560/2504261/04
03 Apr 2025MCPA0.344µg/l0.1LONGFORD CENTRAL
2000PUB1010		3560/2504258/01

Common questions

Frequently asked questions

Is Longford 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 Longford?

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 Longford?

In 2025, monitoring data for 2 Water Supply Zones mapped to Longford included 926 results across 68 parameters. The separate EPA-listed exceedance dataset contains 5 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Longford?

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 Longford

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

RoscommonRoscommon · approximately 28.3 kmAthloneWestmeath · approximately 34.9 kmMullingarWestmeath · approximately 37.7 kmCavanCavan · approximately 41.2 kmBallinasloeGalway · approximately 52.7 kmTullamoreOffaly · approximately 54.5 km

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Longford. 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