WaterCheck Ireland

Bray Tap Water Quality

EPA monitoring records for Water Supply Zones mapped to Bray contain 1,399 monitoring results across 69 parameters in 2025.

The separate EPA exceedance dataset contains 9 listed exceedance records across 4 parameters.

The most frequently listed were Coliform Bacteria (3), Colony Count @ 22°C (2) and Colour (2).

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
1,399Monitoring results
69Parameters tested
9EPA-listed exceedances
71Samples

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

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 median0.27
2025 maximum0.37
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

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

Nitrate

2025 median5.16
2025 maximum7.34
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

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

E. coli

2025 median0
2025 maximum0
Measurements in 202571

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

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

Coliform Bacteria

2025 median0 100ml
2025 maximum15 100ml
Measurements in 202571

3 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

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

Fluoride

2025 median0.665 mg/l
2025 maximum0.72 mg/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

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

Iron

2025 median22 ug/l
2025 maximum492 ug/l
Measurements in 202571

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

311 numeric measurements available; 49 text-only records retained in JSON.

Arsenic

2025 median0.25
2025 maximum0.38
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

23 numeric measurements available; 16 text-only records retained in JSON.

20251,399 results · 9 listed exceedances
Total results — independent scale
0 946 1,892 1,892 2021 1,267 2022 1,232 2023 1,442 2024 1,399 2025
Listed exceedances per 1,000 results — independent scale
0.000 3.653 7.305 3.171 2021 4.736 2022 7.305 2023 0.693 2024 6.433 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
20211,8923056663.171
20221,267796664.736
20231,232656597.305
20241,442766510.693
20251,399716996.433

Year-to-year detail

2025 compared with 2024

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

Results
20241,442
20251,399
-43
Listed exceedances
20241
20259
+8
Samples
202476
202571
-5
Parameters
202465
202569
+4

Parameters with EPA-listed exceedances

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

Coliform Bacteria

3 listed exceedance records / 71 tests4.23%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
15 100ml
Reported limit
0 100ml
Records with this unit/limit pair
3
Latest exceedance
06 Oct 2025

Colony Count @ 22°C

2 listed exceedance records / 63 tests3.17%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
300 1ml
Reported limit
100 1ml
Records with this unit/limit pair
2
Latest exceedance
06 Oct 2025

Colour

2 listed exceedance records / 71 tests2.82%

Descriptive frequency of records, not an official compliance measure.

Highest listed result
33 Hazen
Reported limit
20 Hazen
Records with this unit/limit pair
2
Latest exceedance
01 Dec 2025

Iron

2 listed exceedance records / 71 tests2.82%

Descriptive frequency of records, not an official compliance measure.

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

Across the year

When were listed exceedances recorded?

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

Colour01 Dec 2025
33 HazenReported result
20 HazenReported limit
DLR Zone 6Water supply
JanFebMarAprMayJunJulAugSepOctNovDecColiform BacteriaColony Count @ 22°CColourIron01 Dec 2025 — Colour: 33 Hazen; reported limit 20; DLR Zone 6; sample 241399501 Dec 2025 — Iron: 262 ug/l; reported limit 200; DLR Zone 6; sample 241399506 Oct 2025 — Coliform Bacteria: 1 100ml; reported limit 0; DLR Zone 6; sample 239225206 Oct 2025 — Colony Count @ 22°C: 188 1ml; reported limit 100; DLR Zone 6; sample 239224706 Oct 2025 — Colony Count @ 22°C: 300 1ml; reported limit 100; DLR Zone 6; sample 239225202 Sep 2025 — Coliform Bacteria: 11 100ml; reported limit 0; DLR Zone 6; sample 237881903 Jul 2025 — Colour: 24 Hazen; reported limit 20; Bray PWS; sample 6969/2507575/0203 Jul 2025 — Iron: 492 ug/l; reported limit 200; Bray PWS; sample 6969/2507575/0224 Apr 2025 — Coliform Bacteria: 15 100ml; reported limit 0; Bray PWS; sample 6969/2504513/04

9 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.

BRAY DIRECT PUBLIC SUPPLY

73.71% geographic overlap with the Bray Built Up Area.

Technical mapping details
EDEN code
3400PUB1001
Local authority
Wicklow
Page totals
Included
Spatial rank
1
Historical EPA scheme
Available
Latest monitoring year
2025
DLR_ZONE6

12.08% geographic overlap with the Bray Built Up Area.

Technical mapping details
EDEN code
1000PUB1006
Local authority
Dun Laoghaire-Rathdown
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.

69 parameter rows9 listed exceedance records71 samples
Show detailed data69 parameters · 9 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-dichloroethane8016 Dec 20252
2,3,6-trichlorobenzoic acid8016 Dec 20252
2,4-D8016 Dec 20252
Acrylamide8016 Dec 20252
Aluminium71016 Dec 20252
Ammonium8016 Dec 20252
Antimony8016 Dec 20252
Arsenic8016 Dec 20252
Atrazine8016 Dec 20252
Bentazone8016 Dec 20252
Benzene8016 Dec 20252
Benzo(a)pyrene8016 Dec 20252
Bisphenol A5004 Nov 20251
Boron8016 Dec 20252
Bromate8016 Dec 20252
Cadmium8016 Dec 20252
Chlorfenvinphos8016 Dec 20252
Chloride8016 Dec 20252
Chromium8016 Dec 20252
Clopyralid8016 Dec 20252
Clostridium Perfringens8016 Dec 20252
Coliform Bacteria71316 Dec 20252
Colony Count @ 22°C63201 Dec 20252
Colour71216 Dec 20252
Conductivity71016 Dec 20252
Copper8016 Dec 20252
Cyanide8016 Dec 20252
Cypermethrin8016 Dec 20252
Dichlobenil8016 Dec 20252
Dichlorprop8016 Dec 20252
Diflufenican8016 Dec 20252
Diuron8016 Dec 20252
E. coli71016 Dec 20252
Enterococci71016 Dec 20252
Fluoride8016 Dec 20252
Free Chlorine71016 Dec 20252
Glyphosate8016 Dec 20252
Haloacetic acids (Sum of 5 HAAs)3016 Dec 20251
Iron71216 Dec 20252
Isoproturon8016 Dec 20252
Lead8016 Dec 20252
Linuron8016 Dec 20252
Manganese8016 Dec 20252
MCPA8016 Dec 20252
Mecoprop8016 Dec 20252
Mercury8016 Dec 20252
Metaldehyde8016 Dec 20252
Microcystin-LR5004 Nov 20251
Nickel8016 Dec 20252
Nitrate8016 Dec 20252
Nitrite (at tap)8016 Dec 20252
Odour63001 Dec 20252
PAH8016 Dec 20252
Pendimethalin8016 Dec 20252
Pesticides - Total8016 Dec 20252
pH71016 Dec 20252
Propyzamide8016 Dec 20252
Selenium8016 Dec 20252
Simazine8016 Dec 20252
Sodium8016 Dec 20252
Sulphate8016 Dec 20252
Sum of PFAS (sum of 20)8016 Dec 20252
Taste63001 Dec 20252
Tetrachloroethene & Trichloroethene8016 Dec 20252
Total Chlorine71016 Dec 20252
Total Organic Carbon8016 Dec 20252
Triclopyr8016 Dec 20252
Trihalomethanes(Total)8016 Dec 20252
Turbidity (at tap)71016 Dec 20252

Showing 69 of 69 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
01 Dec 2025Colour33Hazen20DLR Zone 6
1000PUB1006		2413995
01 Dec 2025Iron262ug/l200DLR Zone 6
1000PUB1006		2413995
06 Oct 2025Coliform Bacteria1100ml0DLR Zone 6
1000PUB1006		2392252
06 Oct 2025Colony Count @ 22°C1881ml100DLR Zone 6
1000PUB1006		2392247
06 Oct 2025Colony Count @ 22°C3001ml100DLR Zone 6
1000PUB1006		2392252
02 Sep 2025Coliform Bacteria11100ml0DLR Zone 6
1000PUB1006		2378819
03 Jul 2025Colour24Hazen20Bray PWS
3400PUB1001		6969/2507575/02
03 Jul 2025Iron492ug/l200Bray PWS
3400PUB1001		6969/2507575/02
24 Apr 2025Coliform Bacteria15100ml0Bray PWS
3400PUB1001		6969/2504513/04

Common questions

Frequently asked questions

Is Bray 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 Bray?

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 Bray?

In 2025, monitoring data for 2 Water Supply Zones mapped to Bray included 1,399 results across 69 parameters. The separate EPA-listed exceedance dataset contains 9 records for those zones in 2025. These figures summarise historical records and are not a current safety verdict.

Who monitors drinking water quality in Bray?

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 Bray

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

Greystones and DelganyWicklow · approximately 7.1 kmDublinDublin · approximately 18.5 kmWicklowWicklow · approximately 24.8 kmPortmarnockDublin · approximately 24.9 kmRathcooleDublin · approximately 25.6 kmMalahideDublin · approximately 27.6 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.

DublinDLR_ZONE6

How this page is made

Sources and methodology

Settlement
Census 2022 Built Up Area: Bray. 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 (3)

Retained for mapping transparency; excluded from primary monitoring totals.

ZoneEDENClassGeographic overlap
KILMACANOGUE PUBLIC SUPPLY3400PUB1009SECONDARY0.391158%
GREYSTONES PUBLIC SUPPLY3400PUB1003SECONDARY0.271748%
Old Fassaroe Public Supply3400PUB1073BOUNDARY_TOUCH0.003807%