Legionella risk assessment in Leeds

Updated 16 August 2026

Leeds has a large financial and legal services centre with extensive purpose-built office space, a major teaching hospital estate at the Leeds General Infirmary and St James's, and a substantial student accommodation market serving the city's two universities. Many of the city centre office buildings have been refurbished rather than rebuilt in recent decades, so assessors frequently find historical pipework that no longer matches the current building layout.

Local water supply

The mains water supplier for Leeds is Yorkshire Water (Yorkshire Water website). The mains supply is treated and controlled by the supplier, so your legionella duties begin where the water enters your premises. Anything downstream of the boundary stop tap (storage tanks, calorifiers, pipework, outlets) is your responsibility.

Legionnaires' disease: the national picture

UKHSA does not publish a separate surveillance figure for the Yorkshire & Humber, so no regional number is shown here. The most recent national figure recorded 472 confirmed cases of legionellosis across England and Wales in 2024 — the England & Wales average context, not a count for this region.

UKHSA states figures explicitly for only a handful of regions; a full region-by-region table is not published, and surveillance counts only laboratory-confirmed, reported cases, so the national total is a floor rather than the true number of infections. The full picture, with the trend since 2017, is on the Legionella Data Index. The absence of a regional figure changes nothing about your own duties: a non-domestic water system in Leeds still needs a risk assessment, a control scheme, and the records to show the scheme is being followed.

Typical cost in Leeds

Legionella risk assessment costs in Leeds depend more on the water system than on the location. A rough guide:

• Small premises, mains-fed only, no storage: £150 to £250
• Typical office or shop with a hot water cylinder: £200 to £400
• Care home, hotel, or school with stored hot and cold water: £400 to £800
• Premises with a cooling tower or evaporative condenser: from £800, often much higher

Cooling towers drive the cost up because they are notifiable to the local authority under the Notification of Cooling Towers and Evaporative Condensers Regulations 1992, and they need quarterly sampling and extensive cleaning. Get a tailored estimate with our cost calculator.

Find a legionella risk assessor in Leeds

We are building a directory of qualified water hygiene assessors in Leeds and across the UK. In the meantime, look for assessors who:

• Work for a company registered with the Legionella Control Association (the LCA is the main UK trade body for water hygiene)
• Hold a City & Guilds or equivalent qualification in legionella risk assessment
• Can provide references from similar premises in the Leeds area
• Will quote against a clear scope (number of outlets, inclusion of hot and cold surveys, whether sampling is included)

Legionella testing labs covering Leeds

Routine temperature monitoring is done on site, but where your risk assessment or written scheme calls for water sampling, the samples go to a laboratory for culture. These UKAS-accredited laboratories cover Leeds and accept posted samples:

• ifp-labs UK West Yorkshire Limited (Microsearch Laboratories) (UKAS no. 1916)
• Feedwater Laboratories (UKAS no. 2234), turnaround ~10 days, from £82.68 per sample
• Eurofins Water Hygiene Testing UK Limited (UKAS no. 9658)

Methods, turnaround times and published prices for the full directory are compared on the legionella testing labs page. Sampling is not a substitute for day-to-day control: a clear result records what was found at that outlet on that day, it never certifies a system as safe, and it sits alongside the routine checks in your written scheme of control, not instead of them.

Building types in Leeds

Different building types have specific legionella considerations. Browse the guides most relevant to Leeds premises:

• Landlords and rental properties
• Offices
• Care homes
• Hotels
• Schools
• Dental practices
• All building types