School leak detection in the North West
The North West is served by a single water wholesaler across the whole region, so every school on the mains sits under one set of leakage allowance rules.
6 engineers covering North West
Part of ADI’s 23-engineer team across England, Scotland and Wales. This is the total for the North West coverage area; individual county staffing and appointment availability are confirmed when booking.
ADI engineer coverage, checked 8 September 2026. See the counties served.
The school estate in the North West
- Open schools in the region
- 3,566
- Special and boarding schools
- 334 special, 33 boarding
- Schools in rural areas
- 559
- Academy trusts operating in the region
- 275
- Water wholesalers serving the region
- United Utilities
- Ground and water conditions
- Soft water from upland gathering grounds, which is kind to scale but harder on some older metallic pipework, alongside extensive made ground across the former industrial belt.
- School building programmes in the region
- Large Victorian board school stock across the cotton towns, Liverpool and Manchester, overlaid with heavy post-war and 1960s system building.
- Largest school site by capacity
- The Oldham College, 10,000 places
Across 24 local authorities, teaching 1,169,236 pupils. By phase: primary 2,432, secondary 455, nursery 62, 16 plus 48, all-through 12.
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
1,727 schools in the region have nursery classes attached, which is where most of the region's early years water use actually sits.
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
A rural school is more likely to sit at the end of a long private supply run, and a minority are on private water supplies rather than a mains connection.
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
1,203 academies, and 1,308 schools in total sit inside a trust. The largest by school count are Emmaus Catholic Academy Trust (38), Chester Diocesan Academies Trust (32), St Teresa of Calcutta Catholic Academy Trust (27).
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
Leakage allowance schemes are set by the wholesaler, but a school's account is with its retailer. Ask your retailer which wholesaler scheme applies, what evidence it needs, and what the repair deadline is, before you commission the repair.
Source: MOSL, Our members: trading parties in the non-household water market (opens in a new tab) ().
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
In Oldham. A site of this size has a distribution network rather than a single supply run, which changes how a leak is isolated.
Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
The twelve regions arranged as a tile grid, shaded by open school count. the North West is outlined. Counts come from the four national school registers, not from an estimate.
What this means for a survey in the North West
The ground and water conditions above are the practical part. Hard water scales fittings and shortens the life of valves and mixers. Soft water is easier on scaling but less forgiving of some older metallic pipework. Shrinkable clay moves through a dry summer and pulls buried joints apart, and former coalfield ground settles differentially for decades after the workings closed.
None of that changes the sequence: measure at the meter, isolate to a branch, locate from the surface. It changes what we expect to find and where we look first.
Case studies from schools in the North West
None published yet. Rather than write a plausible-sounding example, this page says so. When ADI supplies a school in this region that is happy to be named, or happy to be described anonymously, it will appear here with the measured loss and what the repair involved.
Arranging a survey in the North West
Looking for a general leak detection company rather than a school specialist? Our sister directory lists leak detection companies across the North West. Both sites are published by the same people, which is disclosed on the about page of each.
Sources for this page
- Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
- Source: MOSL, Our members: trading parties in the non-household water market (opens in a new tab) ().
Last reviewed . How this site sources and dates its figures.