Rob Hollis
Researcher & editor, off-mains drainage
Writes independent guides on septic tanks, cesspits and sewage treatment plants for homes off the mains. Cross-checks the general binding rules and the Environment Agency, SEPA, NRW and NIEA against real prices, British Standards and what owners actually report on the forums.
Cesspit vs septic tank vs treatment plant: same price to install, ten times the difference to own→Cesspit: what it is, cesspit tank prices in 2026 (2,800 to 18,000 litres), what emptying costs, and why it costs six times more than a septic tank→Septic tank regulations UK 2026 (general binding rules): the 23 rules sorted by when your discharge started, the 2020 deadline that was withdrawn, and what applies in Wales, Scotland and Northern Ireland→How a septic tank works — and why the tank is the least important part→Cost to move a septic tank (UK): nobody sells a «move», you pay for a removal (£500 – £1,500) and a new installation (£4,000 to £10,000 as a replacement), why a move of more than 10 metres turns your old discharge into a new one, the 7 m and 15 m distances, building control, and what to do with the old tank→Selling a house with a septic tank: your legal duty is to tell, not to replace→Klargester BioDisc: the same model is 18 people in the brochure and 24 on the manufacturer's own declaration→The no-quote trick that turns a £150 septic tank call-out into a £6,000 bill→What septic tank emptying really costs in the UK (2026): the only official price is in Northern Ireland→What a septic tank installation costs in the UK: quotes range from £1,600 to £18,000 and nobody official publishes a thing→Septic tank maintenance in the UK: the rule says «someone who is competent» and never defines it, and asks for records «if you have them»→Septic tank problems: the tank is almost never the thing that broke→Septic tank regulations in Scotland (2026): SEPA registration at £198.55, what changed on 1 November 2025 and 1 March 2026, and what Scottish Water charges to empty it→Septic tank replacement: in some catchments the council pays the whole bill→What size septic tank do I need? Bedrooms give you the people, the regulation gives you the litres→Septic tank smells: where the smell is tells you what is broken→Septic tank regulations in Wales: registration with Natural Resources Wales is a legal duty since April 2010 (free for most, one-off), no septic tank may discharge to a watercourse, the 2 000 and 5 000 litres a day limits, the 30 m sewer rule, why a registration is refused, what a permit costs (£3,691 to ground) and what a buyer asks for→Septic tank soakaway regulations 2020: what the 2020 rule banned (a septic tank discharging to a watercourse), what happened to the deadline (withdrawn 25 October 2019, now 'as soon as possible'), what it never touched (a drainage field to ground), the drainage mound, and the rules a soakaway must meet in England and Scotland→Septic tank replacement grant UK 2026: the free septic tank upgrade schemes explained (Somerset, Hampshire up to £30,000, Cumbria, Norfolk, High Peak), who really pays, the 100-year agreement, and why there is no national grant→Domestic sewage treatment plants: everyone beats the limit, so stop shopping on BOD→Shared septic tanks: jointly liable for something you don't control→Soakaway crates: what they cost, how many you need for a roof, and why no installer will put them behind a septic tank→Drainage field, not soakaway: the half of your septic system that actually treats the sewage→How to unblock a toilet — and what's actually safe on a septic tank→What not to put down a septic tank — and why British tanks don't need your bacteria→