Northumberland is one of the least densely populated counties in England, and a very large proportion of its properties sit outside the mains sewer network. From the Tyne Valley in the south to Berwick in the north, from coastal villages like Alnmouth and Seahouses to the remote upland farms of the Cheviot Hills — private wastewater systems are the norm, not the exception.
That means there's a huge amount of septic tank and treatment plant work in Northumberland — new installations for self-builds and barn conversions, replacements for ageing or non-compliant systems, and compliance assessments driven by the 2020 General Binding Rules. We cover all of it, across the whole county, with free site surveys and no call-out charge.
We know Northumberland's ground conditions well. The county covers a wide range of soil and geology types, and what works in the sandstone south won't always work in the upland peat and clay of the National Park. We carry out proper percolation testing on every job — no assumptions.
Our services in Northumberland
Everything you need,
in one place
Local knowledge
Ground conditions
across
Northumberland
Northumberland covers a wider range of geology and soil conditions than almost any other county in the North East. In the south and along the Tyne Valley corridor, you'll often find workable mixed soils with reasonable drainage — these areas can usually support a standard septic tank and drainage field, provided there's sufficient distance from the river system.
Move north into the Northumberland National Park and the picture changes. Higher ground around the Cheviots, Redesdale, and the Coquet Valley tends to have thin, peaty soils over hard rock — drainage can be poor, percolation results are less predictable, and in some cases a treatment plant with watercourse discharge is the only practical option.
The coastal strip from Alnmouth to Berwick presents its own considerations — sandy soils around dune systems can drain fast, which affects drainage field sizing, while properties close to designated river mouths and coastal zones face additional EA restrictions on discharge.
We've worked across all of these conditions. We don't assume — we test, assess, and specify correctly for wherever your property sits in the county.
Every village, town &
rural area nearby
Tyne Valley South
Mixed & alluvial soils
Reasonable drainage in many areas, but river proximity means GBR watercourse rules apply. Drainage field siting needs careful assessment near the Tyne and North Tyne.
National Park & Uplands
Thin peat over rock
Poor percolation in many upland areas. Treatment plants with permitted watercourse discharge are often the most viable solution in Redesdale, Coquet Valley and Cheviot areas.
Central Northumberland
Clay & mixed
Areas around Morpeth, Alnwick and inland from the coast often have heavier clay soils. Drainage fields need careful sizing — undersized fields in slow-draining ground fail quickly.
Coastal Strip
Sandy & fast-draining
Coastal soils around Bamburgh, Seahouses, and Alnmouth can drain very rapidly. Oversized drainage fields or treatment plants with direct discharge may be required here.
How It Works
From your first call
to a working system
Here's exactly what happens when you get in touch with us about a new septic Tanks installation in Newcastle.
STEP 1
Get in touch
Call or fill in the form. Tell us what's going on — new build, rural property, barn conversion. We'll ask a few questions and arrange a site visit, usually within a few days.
STEP 2
We survey and test
We visit the site, carry out percolation testing, and assess access and ground conditions. You get a written quote with a fixed price. No charge for the visit.
STEP 3
We sort paperwork
Before any groundworks start, we notify the Environment Agency and submit the Building Control application. You don't need to do anything.
STEP 4
We install it
Excavation, tank placement, drainage field, pipework, testing, and backfill — our team handles the whole installation. Most domestic jobs take 2–4 days on site.
Tyne Valley & South Northumberland
Hexham, Corbridge, Prudhoe, Stocksfield, Riding Mill, Ovingham, Wylam, Haltwhistle, Haydon Bridge, Bardon Mill, Once Brewed, Ponteland, Stamfordham, Matfen, Heddon-on-the-Wall, Newburn
Morpeth & Central Northumberland
Morpeth, Pegswood, Stannington, Mitford, Bothal, Longhorsley, Kirkwhelpington, Capheaton, Scots Gap, Belsay, Bolam, Hartburn
Alnwick & The Coast
Alnwick, Alnmouth, Warkworth, Amble, Felton, Shilbottle, Longhoughton, Embleton, Craster, Howick, Lesbury, Rock
Northumberland Coast North
Bamburgh, Seahouses, Beadnell, Chathill, Belford, Wooler, Milfield, Coldstream border, Lowick, Berwick-upon-Tweed, Tweedmouth, Norham
Coquet Valley & National Park
Rothbury, Thropton, Harbottle, Hepple, Elsdon, Otterburn, Byrness, Rochester, Alwinton, Harbottle, Holystone, Whittingham, Glanton, Powburn
North Tyne & Redesdale
Bellingham, Wark, Chollerford, Wall, Humshaugh, Kielder, Falstone, Greenhaugh, Tarset, Greenhead, Gilsland
North Pennines Fringe
Allendale, Allenheads, Nenthead, Whitfield, Slaley, Catton, Sinderhope, Carrshield