Advertised pay · updated 4 October 2026

Drainage Engineer vs Site Engineer: advertised pay

Site Engineer roles are advertised higher: a median £77,625 against £43,750 for Drainage Engineer, a gap of 77% (n=50 and n=295 respectively).

Drainage Engineer, median advertised salary£43,750advertised · 50 adverts stating pay · 04 Oct 2026 Site Engineer, median advertised salary£77,625advertised · 295 adverts stating pay · 04 Oct 2026

The two samples are different sets of adverts from different employers, so a gap between them is a gap in what is being advertised.

Advertised, not paid: these are the salaries employers stated in live job adverts. They are not a survey of what people are paid, and this site neither sets nor guarantees any rate.

How each one spreads

Drainage Engineer

Lowest advertised£27,500advertised · the lowest of 50 adverts stating pay · 04 Oct 2026
25th percentile£37,986advertised · a quarter of 50 adverts are below · 04 Oct 2026
Median£43,750advertised · half of 50 adverts are below · 04 Oct 2026
75th percentile£49,688advertised · three quarters of 50 adverts are below · 04 Oct 2026
Highest advertised£77,625advertised · the highest of 50 adverts stating pay · 04 Oct 2026

Five measured points from the adverts that state pay. Nothing is drawn between them, because the shape in between has not been measured.

Middle half of adverts£37,986 – £49,688advertised · 50 adverts stating pay · 04 Oct 2026

Lowest to highest£27,500 – £77,625advertised · 50 adverts stating pay · 04 Oct 2026

Adverts stating pay50 of 5493% of live adverts · 04 Oct 2026

Site Engineer

Lowest advertised£28,000advertised · the lowest of 295 adverts stating pay · 04 Oct 2026
25th percentile£55,000advertised · a quarter of 295 adverts are below · 04 Oct 2026
Median£77,625advertised · half of 295 adverts are below · 04 Oct 2026
75th percentile£86,250advertised · three quarters of 295 adverts are below · 04 Oct 2026
Highest advertised£450,000advertised · the highest of 295 adverts stating pay · 04 Oct 2026

Five measured points from the adverts that state pay. Nothing is drawn between them, because the shape in between has not been measured.

Middle half of adverts£55,000 – £86,250advertised · 295 adverts stating pay · 04 Oct 2026

Lowest to highest£28,000 – £450,000advertised · 295 adverts stating pay · 04 Oct 2026

Adverts stating pay295 of 38676% of live adverts · 04 Oct 2026

Cities where both are advertised

Only cities with at least five adverts stating pay for both roles. A city left out has too thin a sample on one side, not lower pay.

City	Drainage Engineer median	Site Engineer median	Basis
Bristol	£45,000	£80,500	advertised · 7 / 5 adverts stating pay · 04 Oct 2026
London	£44,000	£71,300	advertised · 10 / 29 adverts stating pay · 04 Oct 2026

Each city’s figures are its own latest snapshots, the ones its city pay pages print.

Drainage Engineer by level

Median advertised salary at each level for Drainage Engineer roles across the UK, on one scale from zero.

GraduateFewer than 5 adverts state pay.2 of 2 live adverts state pay · 04 Oct 2026
JuniorFewer than 5 adverts state pay.1 of 1 live advert states pay · 04 Oct 2026
Senior£48,000advertised · 9 adverts stating pay · 04 Oct 2026
Lead£53,750advertised · 6 adverts stating pay · 04 Oct 2026

The level comes from the words in the advert title. An advert that does not say its level counts towards the overall figure and no level.

Most recent snapshot here: 4 October 2026.

Site Engineer by level

Median advertised salary at each level for Site Engineer roles across the UK, on one scale from zero.

GraduateFewer than 5 adverts state pay.3 of 5 live adverts state pay · 04 Oct 2026
Junior£33,000advertised · 5 adverts stating pay · 04 Oct 2026
Senior£65,000advertised · 26 adverts stating pay · 04 Oct 2026

The level comes from the words in the advert title. An advert that does not say its level counts towards the overall figure and no level.

Most recent snapshot here: 4 October 2026.

Where next

New Drainage Engineer and Site Engineer adverts by email, weekly

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