Regional data · Legionella Index

The Legionella Index: North West England

Every dataset on the Index, filtered to the North West England: confirmed Legionnaires' disease figures where UKHSA publishes them, tracked enforcement cases, water hardness for 22 towns, and what the councils here ask of landlords.

Part of the Legionella Data Index · compiled 2 August 2026

n/pConfirmed cases, not published
5Enforcement cases tracked
£1.08mTotal fines in tracked cases
22Towns in the hardness dataset
01 / SURVEILLANCE

Legionnaires' disease in the North West England

UKHSA does not state a confirmed case count for the North West England in the surveillance text. Full region-by-region counts for every English region are not published; the figures that are published are on the national Index. Surveillance counts only laboratory-confirmed, reported cases, so any published figure is a floor, not the true total.

02 / ENFORCEMENT

Prosecutions tracked in the North West England

The tracker holds 5 legionella prosecutions from the North West England, totalling £1.08m in fines (2006–2024).

DefendantYearSectorFineProsecutor
Sanctuary Housing Association
In 2018 every water sample at a Birkenhead sheltered-housing scheme tested positive for legionella. The water system was poorly managed, staff were inadequately trained, and residents were wrongly told the water could be boiled and used. Vulnerable residents were evacuated; no one fell ill. Source
2024 Housing £900k HSE
Mother Redcaps Care Home
A Wallasey care home had no system to manage its hot and cold water and failed to comply with an HSE improvement notice despite two extensions, putting elderly residents at risk. Source
2012 Care home £7k HSE
Pontin's Limited (in administration) Death/outbreak
Guests contracted Legionnaires' disease from a contaminated water storage tank feeding a chalet at the Lytham St Annes holiday camp, and a guest died. The company's own temperature records showed water held below recommended levels, and warnings were not acted upon. Convicted at Preston Crown Court in 2012 of breaching HSWA ss.2(1) and 3(1). Because the firm was in administration, a nominal £1,000 fine plus £10,000 costs was imposed; the judge said a fine near £500,000 would otherwise have applied. (Sources differ on whether HSE or the local authority led the prosecution.) Source
2012 Hospitality £1k HSE
Liverpool Heart and Chest Hospitals NHS Trust
High legionella levels were found in the Audrey Leigh wing in May 2002, but the Trust stopped testing, assigned no one responsibility for managing the bacteria, and had no suitable control measures. Two patients died of Legionnaires' disease in early 2007, but HSE could not conclusively link those infections to the hospital, so the conviction is for the safety-management failing rather than for causing death. Pleaded guilty and was fined nearly £48,000 at Liverpool Magistrates' Court in 2009. Source
2009 Healthcare £48k HSE
Barrow Borough Council Death/outbreak
The August 2002 Barrow-in-Furness outbreak killed seven people and made around 180 ill, the source being a poorly maintained air-conditioning cooling system at the council-run Forum 28 arts centre. The council was convicted of breaching HSWA s3(1) and fined £125,000 plus £90,000 costs in July 2006. It was the first UK public body to face corporate manslaughter charges, which were dropped before the HSWA conviction. A named council employee was separately prosecuted as an individual and is not recorded here. Source
2006 Local authority leisure £125k HSE

The full UK record, its curation rules and the per-sector breakdown are on the Legionella Enforcement Tracker; sector views sit under the Index.

03 / WATER HARDNESS

Water hardness in the North West England towns

15 of 22 towns here carry a reported hardness figure; the rest show a band inferred from the water company's own statement, or an honest gap. Every row names its source and confidence. Scale risk uses the DWI/WHO anchor: scaling begins around 200 mg/l CaCO₃.

TownWater companyHardness (mg/l CaCO₃)Hardness bandScale riskEvidence
Barrow-in-FurnessUnited UtilitiesSoft to moderately soft *Low *Company statement - band only (United Utilities)
United Utilities states the majority of water in its region is soft or very soft (statement quoted in a hosted planning document).
BlackburnUnited Utilities99.5SoftLowSingle source - unverified (WaterGrade)
BlackpoolUnited UtilitiesWithheldConflict: MyTapWater 58 vs WaterGrade 175.8 - withheld
The two compiled values disagree, so neither is published; verify via the company checker.
BoltonUnited UtilitiesWithheldConflict: MyTapWater 60 vs WaterGrade 115.4 - withheld
The two compiled values disagree, so neither is published; verify via the company checker.
BurnleyUnited Utilities36.1SoftLowSingle source - unverified (WaterGrade)
BuryUnited Utilities48.4SoftLowSingle source - unverified (WaterGrade)
CarlisleUnited UtilitiesSoft to moderately soft *Low *Company statement - band only (United Utilities)
United Utilities states the majority of water in its region is soft or very soft (statement quoted in a hosted planning document).
ChesterUnited UtilitiesWithheldConflict: MyTapWater 62 vs WaterGrade 172.3 - withheld
The two compiled values disagree, so neither is published; verify via the company checker.
CreweUnited Utilities132.2Slightly hardModerateSingle source - unverified (WaterGrade)
LancasterUnited Utilities71.5SoftLowSingle source - unverified (WaterGrade)
LiverpoolUnited UtilitiesWithheldConflict: MyTapWater 55 vs WaterGrade 121.6 - withheld
The two compiled values disagree, so neither is published; verify via the company checker.
MacclesfieldUnited Utilities125.5Slightly hardModerateSingle source - unverified (WaterGrade)
ManchesterUnited Utilities55-60SoftLowTwo agreeing sources - unverified (MyTapWater + WaterGrade)
Two independent aggregators agree; still to be spot-checked against the company checker.
OldhamUnited Utilities46SoftLowSingle source - unverified (WaterGrade)
PrestonUnited Utilities140.8Slightly hardModerateSingle source - unverified (WaterGrade)
RochdaleUnited Utilities49.2SoftLowSingle source - unverified (WaterGrade)
SalfordUnited Utilities46SoftLowSingle source - unverified (WaterGrade)
SouthportUnited Utilities291.1HardHighSingle source - unverified (WaterGrade)
St HelensUnited Utilities192.2Moderately hardModerateSingle source - unverified (WaterGrade)
StockportUnited UtilitiesSoft to moderately soft *Low *Company statement - band only (United Utilities)
United Utilities states the majority of water in its region is soft or very soft (statement quoted in a hosted planning document).
WarringtonUnited Utilities207.3HardHighSingle source - unverified (WaterGrade)
WiganUnited Utilities111.1Slightly hardModerateSingle source - unverified (WaterGrade)

* Band or scale risk inferred from the water company's own published statement, not a measured town value. Figures labelled "unverified" come from aggregator sites and should be confirmed against the company's postcode water-quality checker before being relied on. How this dataset is built.

04 / COUNCIL DUTIES

What councils in the North West England ask of landlords

The national legionella duty is the same everywhere; what varies locally is property licensing and whether legionella is written into licence conditions. These verified councils fall in the North West England:

CouncilNationSchemeIn forceLegionella in licensing?
Liverpool City Council
16 wards (~80% of the city's private rented sector)
Official 2022-27 licence conditions (September 2022) scanned: no legionella. Source document
EnglandSelective licensing1 Apr 2022 – 31 Mar 2027Checked - not in conditions
Sefton Council
2023-2028 schemes. Selective: Bootle. Additional: Seaforth, Waterloo, Brighton-le-Sands, Central Southport
EnglandSelective licensing + Additional HMO licensingn/aNot yet verified
Important This page is general guidance only. Legionella risk varies with the specific water system, its use, and the people exposed to it. You should consult a competent legionella risk assessor for advice on your premises. LegionellaCheck is an independent information service and is not affiliated with HSE, UKAS, the Legionella Control Association, or any water hygiene company. This site does not provide medical advice. If you suspect Legionnaires' disease, contact NHS 111 or your GP.