WaterCheck Ireland

Drogheda Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Drogheda contain 1,849 monitoring results across 68 parameters in 2025.

The separate EPA exceedance dataset contains 6 listed exceedance records across 4 parameters.

The most frequently listed were Colony Count @ 22°C (2), Iron (2) and Colour (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
1,849Monitoring results
68Parameters tested
6EPA-listed exceedances
103Samples

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

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 median4 ug/l
2025 maximum4 ug/l
Measurements in 20258

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

8 numeric measurements available; 45 text-only records retained in JSON.

Nitrate

2025 median8.65
2025 maximum15.03
Measurements in 20258

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

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

E. coli

2025 median0
2025 maximum0
Measurements in 2025103

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum0 100ml
Measurements in 2025103

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

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

Fluoride

2025 median0.7
2025 maximum0.7
Measurements in 20258

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

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

Iron

2025 median24 ug/l
2025 maximum347 ug/l
Measurements in 2025103

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.

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Numeric resultEPA-listed exceedance

123 numeric measurements available; 522 text-only records retained in JSON.

Arsenic

2025 median—
2025 maximum—
Measurements in 20258

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; 52 text-only records retained in JSON.

20251,849 results · 6 listed exceedances
Total results — independent scale
0 1,331 2,662 2,225 2021 2,662 2022 2,194 2023 2,083 2024 1,849 2025
Listed exceedances per 1,000 results — independent scale
0.000 2.160 4.321 4.045 2021 2.254 2022 1.367 2023 4.321 2024 3.245 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
20212,2251506594.045
20222,6621696462.254
20232,1941336531.367
20242,0831206594.321
20251,8491036863.245

Year-to-year detail

2025 compared with 2024

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

Results
20242,083
20251,849
-234
Listed exceedances
20249
20256
-3
Samples
2024120
2025103
-17
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 / 95 tests2.11%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
204 1ml
Reported limit
100 1ml
Records with this unit/limit pair
2
Latest exceedance
03 Nov 2025

Iron

2 listed exceedance records / 103 tests1.94%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
347 ug/l
Reported limit
200 ug/l
Records with this unit/limit pair
2
Latest exceedance
04 Sep 2025

Colour

1 listed exceedance records / 103 tests0.97%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
22 Hazen
Reported limit
20 Hazen
Records with this unit/limit pair
1
Latest exceedance
13 Jan 2025

pH

1 listed exceedance records / 103 tests0.97%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
6.36 pH Units
Reported limit
9.5 pH Units
Records with this unit/limit pair
1
Latest exceedance
23 Jul 2025

Across the year

When were listed exceedances recorded?

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

Colony Count @ 22°C03 Nov 2025
157 1mlReported result
100 1mlReported limit
South Louth & East MeathWater supply
JanFebMarAprMayJunJulAugSepOctNovDecColony Count @ 22°CColourIronpH03 Nov 2025 — Colony Count @ 22°C: 157 1ml; reported limit 100; South Louth & East Meath; sample 0492/2511390/0304 Sep 2025 — Iron: 347 ug/l; reported limit 200; Kiltrough / Bettystown; sample 0492/2509325/0123 Jul 2025 — pH: 6.36 pH Units; reported limit 9.5; South Louth & East Meath; sample 2389/2507549/0217 Feb 2025 — Colony Count @ 22°C: 204 1ml; reported limit 100; South Louth & East Meath; sample 2389/2502470/0413 Jan 2025 — Colour: 22 Hazen; reported limit 20; South Louth & East Meath; sample 2389/2501461/0413 Jan 2025 — Iron: 299 ug/l; reported limit 200; South Louth & East Meath; sample 2389/2501461/04

6 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.

South Louth & East Meath

76.42% geographic overlap with the Drogheda Built Up Area.

Technical mapping details
EDEN code
2100PUB1019
Local authority
Louth
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
Kiltrough/Bettystown

7.21% geographic overlap with the Drogheda Built Up Area.

Technical mapping details
EDEN code
2300PUB2041
Local authority
Meath
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 rows6 listed exceedance records103 samples
Show detailed data68 parameters · 6 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-dichloroethane8003 Dec 20252
2,3,6-trichlorobenzoic acid8003 Dec 20252
2,4-D8003 Dec 20252
Acrylamide7003 Dec 20252
Aluminium103012 Dec 20252
Ammonium8003 Dec 20252
Antimony8003 Dec 20252
Arsenic8003 Dec 20252
Atrazine8003 Dec 20252
Bentazone8003 Dec 20252
Benzene8003 Dec 20252
Benzo(a)pyrene8003 Dec 20252
Bisphenol A8003 Dec 20252
Boron8003 Dec 20252
Bromate8003 Dec 20252
Cadmium8003 Dec 20252
Chlorfenvinphos8003 Dec 20252
Chloride8003 Dec 20252
Chromium8003 Dec 20252
Clopyralid8003 Dec 20252
Clostridium Perfringens8003 Dec 20252
Coliform Bacteria103012 Dec 20252
Colony Count @ 22°C95212 Dec 20252
Colour103112 Dec 20252
Conductivity103012 Dec 20252
Copper8003 Dec 20252
Cyanide8003 Dec 20252
Cypermethrin8003 Dec 20252
Dichlobenil8003 Dec 20252
Dichlorprop8003 Dec 20252
Diflufenican8003 Dec 20252
Diuron8003 Dec 20252
E. coli103012 Dec 20252
Enterococci103012 Dec 20252
Fluoride8003 Dec 20252
Free Chlorine103012 Dec 20252
Glyphosate8003 Dec 20252
Haloacetic acids (Sum of 5 HAAs)8003 Dec 20252
Iron103212 Dec 20252
Isoproturon8003 Dec 20252
Lead8003 Dec 20252
Linuron8003 Dec 20252
Manganese8003 Dec 20252
MCPA8003 Dec 20252
Mecoprop8003 Dec 20252
Mercury8003 Dec 20252
Metaldehyde8003 Dec 20252
Nickel8003 Dec 20252
Nitrate8003 Dec 20252
Nitrite (at tap)8003 Dec 20252
Odour95012 Dec 20252
PAH8003 Dec 20252
Pendimethalin8003 Dec 20252
Pesticides - Total8003 Dec 20252
pH103112 Dec 20252
Propyzamide8003 Dec 20252
Selenium8003 Dec 20252
Simazine8003 Dec 20252
Sodium8003 Dec 20252
Sulphate8003 Dec 20252
Sum of PFAS (sum of 20)8003 Dec 20252
Taste95012 Dec 20252
Tetrachloroethene & Trichloroethene8003 Dec 20252
Total Chlorine103012 Dec 20252
Total Organic Carbon8003 Dec 20252
Triclopyr8003 Dec 20252
Trihalomethanes(Total)8003 Dec 20252
Turbidity (at tap)103012 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
03 Nov 2025Colony Count @ 22°C1571ml100South Louth & East Meath
2100PUB1019		0492/2511390/03
04 Sep 2025Iron347ug/l200Kiltrough / Bettystown
2300PUB2041		0492/2509325/01
23 Jul 2025pH6.36pH Units9.5South Louth & East Meath
2100PUB1019		2389/2507549/02
17 Feb 2025Colony Count @ 22°C2041ml100South Louth & East Meath
2100PUB1019		2389/2502470/04
13 Jan 2025Colour22Hazen20South Louth & East Meath
2100PUB1019		2389/2501461/04
13 Jan 2025Iron299ug/l200South Louth & East Meath
2100PUB1019		2389/2501461/04

Common questions

Frequently asked questions

Is Drogheda 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 Drogheda?

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 Drogheda?

In 2025, monitoring data for 2 Water Supply Zones mapped to Drogheda included 1,849 results across 68 parameters. The separate EPA-listed exceedance dataset contains 6 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Drogheda?

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 Drogheda

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

Laytown, Bettystown, Mornington and DonacarneyMeath · approximately 6.0 kmBalbrigganDublin · approximately 15.7 kmArdeeLouth · approximately 20.3 kmSkerriesDublin · approximately 21.3 kmAshbourneMeath · approximately 23.0 kmNavanMeath · approximately 23.1 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.

Laytown, Bettystown, Mornington and DonacarneyKiltrough/BettystownAshbourneSouth Louth & East MeathRatoathSouth Louth & East Meath

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Drogheda. 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

Additional spatial intersections (1)

Retained for mapping transparency; excluded from primary monitoring totals.

ZoneEDENClassGeographic overlap
Drybridge2100PUB1020BOUNDARY_TOUCH0.062039%