Specialists in septic tank and sewage treatment installations IN Dorset, Hampshire, Wiltshire, Somerset

Is Your Septic Tank Or Soakaway Not Working Properly?


No Mains Sewage In The Vicinity? We can help!

Sewage Treatment

We supply and fit several different sewage treatment systems. All are afforable products with low running costs…

Mantair Septic Tanks

We supply and fit the Mantair range of septic tank systems and sewage treatment plants…

Soak Away

The Polybed Drainage System is a sustainable high-performance alternative to traditional methods…

Rain Water Harvesting

Rainwater Harvesting is a simple solution which supports the environment, assists with water shortages and helps to satisfy the increasing demand for water…


Where there is no access to a mains sewer, the Matrix plant provides an extremely efficient solution to sewage disposal…


Read recent comments and see ratings by our customers on checkatrade.com. Totally genuine feedback…

Welcome to Drainability

We are specialists in septic tank and sewage treatment installations in Somerset.

We cover Somerset BA10, BA11, BA16, BA20, BA21, BA22, BA3, BA4, BA5, BA6, BA7, BA8, BA9, BS18, BS24, BS25, BS26, BS27, BS28, DT9, EX35, TA1, TA10, TA11, TA12, TA13, TA14, TA15, TA16, TA17, TA18, TA19, TA2, TA20, TA21, TA22, TA23, TA24, TA3, TA4, TA5, TA6, TA7, TA8, TA9

We are Somerset’s Premier Suppliers and Installers Of Home Sewage Treatment Plants and Pump Stations. We are also a licensed contractor for Mantair, Matrix, Marsh and Bio-Pure.

We can convert your existing septic tank / cesspit into a treatment plant, saving you thousands of pounds. We deal with septic tanks throughout Somerset.

We are specialists in Sewage and Effluent Treatment Systems, serving all of Somerset, including: Abbas Combe, Abbotsleigh, Aisholt, Alcombe, Alford, Aller, Angersleigh, Ansford, Ash, Ashbrittle, Ashcott, Ashill, Ashington, Ash Prior, Ashwick, Axbridge, Babcary, Babington, Backwell, Badgworth, Baltonsborough, Banwell, Barrington, Barrow Gurney, Barton St David, Barwick, Batcombe, Bath, Bathampton, Bathealton, Batheaston, Bathford, Bathwick, Bawdrip, Beckington, Bedminster, Beer Crocombe, Berkley, Berrow, Bickenhall, Bicknoller, Biddisham, Binegar, Bishops Hull, Bishops Lydeard, Bishop Sutton, Bishopsworth, Blackford, Blackford (Wedmore), Blagdon, Bleadon, Bradford on Tone, Bratton Seymour, Brean, Brent Knoll, Brewham, Bridgwater, Brimpton, Brislington, Broadway, Brockley, Brompton Ralph, Brompton Regis, Broomfield, Brushford, Bruton, Buckland Dinham, Buckland St Mary, Burnett, Burnham on Sea, Burrington, Burrowbridge, Butcombe, Butleigh, Camely, Camerton, Cannington, Carhampton, Castle Cary, Catcott, Chaffcombe, Chapel Allerton, Chard, Charlcombe, Charlinch, Charlton Adam, Charlton Horethorne, Charlton Mackrell, Charlton Musgrove, Charterhouse on Mendip, Cheddar, Cheddon Fitzpaine, Chedzoy, Chelvey, Chelwood, Chew Magna, Chewstoke, Chewton Mendip, Chilcompton, Chillington, Chilthorne Domer, Chilton Cantelo, Chilton Polden, Chilton Trinity, Chipstable, Chiselborough, Christon, Churchill, Churchstanton, Clapton in Gordano, Clatworthy, Claverton, Cleeve, Clevedon, Cloford, Closworth, Clutton, Coleford, Combe Down, Combe Florey, Combe Hay, Combe St Nicholas, Compton Bishop, Compton Dando, Compton Dundon, Compton Martin, Compton Pauncefoot, Congresbury, Corfe, Corston, Corton Denham, Cossington, Cothelstone, Coxley, Creech St Michael, Crewkerne, Cricket Malherbie, Cricket St Thomas, Croscombe, Crowcombe, Cucklington, Cudworth, Culbone, Curland, Curry Mallett, Curry Rivel, Cutcombe, Dinder, Dinnington, Ditcheat, Dodington, Donyatt, Doulting, Dowlish Wake, Downhead, Downside, Draycott, Drayton, Dulverton, Dundry, Dunkerton, Dunster, Durleigh, Durston, Earnshill & Hambridge, East Brent, East Chinnock, East Coker, East Cranmore, East Harptree, East Horrington, East Huntspill, East Lambrooke, East Lydford, Easton, Easton in Gordano, East Pennard, East Quantoxhead, Edington, Elm, Elworthy, Emborough, English Combe, Enmore, Evercreech, Exford, Exmoor, Exton, Failand, Farleigh Hungerford, Farmborough, Farrington Gurney, Felton, Fiddington, Fitzhead, Fivehead, Flax Burton, Foxcote, Freshford, Frome, Furnham, Glastonbury, Goathill, Goathurst, Godney, Great Elm, Greinton, Halse, Hambridge, Hardington, Hardington Mandeville, Haslebury Plucknett, Hatch Beauchamp, Hawkridge, Heathfield, Hemington, Henstridge, Henton, Highbridge, High Ham, High Littleton, Hillfarrance, Hinton Blewett, Hinton Charterhouse, Hinton St George, Holcombe, Holford, Holton, Holwell, Hornblotton, Horsington, Horton, Huish Champflower, Huish Episcopi, Huntspill, Hutton, Ilchester, Ilminster, Ilton, Isle Abbotts, Isle Brewer, Keinton, Kelston, Kenn, Kewstoke, Keynsham, Kilmersdon, Kilmington, Kilton, Kilve, Kingsbury Episcopi, Kingsdon, Kingston St Mary, Kingstone, Kingston Seymour, Kingsweston, Kittisford, Knowle St Giles, Lamyat, Langford, Langford Budville, Langport, Langridge, Laverton, Leighland, Leigh on Mendip, Lilstock, Limington, Litton, Locking, Long Ashton, Long Load, Long Sutton, Lopen, Lovington, Loxton, Luccombe, Lufton, Lullington, Luxborough, Lydeard St Lawrence, Lympsham, Lyncombe, Lyncombe St Luke, Lyncombe St Mark, Lyng, Maiden Bradley, Maperton, Mark, Marksbury, Marston Bigot, Marston Magna, Martock, Meare, Mells, Merriott, Middle Chinnock, Middlezoy, Midsomer Norton, Milborne Port, Milton Clevedon, Milton St Jude, Milverton, Minehead, Misterton, Monksilver, Monkton Combe, Montacute, Moorlinch, Muchelney, Mudford , Nailsea, Nempnett Thrubwell, Nether Stowey, Nettlecombe, Newton St Loe, North Barrow, North Cadbury, North Cheriton, North Curry, Northmoor Green, North Newton, Northover, North Perrot, North Petherton, North & South Bradon, North Stoke, North Wootton, Norton Fitzwarren, Norton Malreward, Norton St Philip, Norton Sub Hamdon, Nunney, Nyland, Nynehead, Oake, Oakhill, Oare, Odcombe, Old Cleeve, Orchardleigh, Orchard Portman, Othery, Otterford, Otterhampton, Over Stowey, Paulton, Pawlett, Peasedown St John, Pendomer, Penselwood, Pensford, Pill, Pilton, Pitcombe, Pitminster, Pitney, Podimore, Porlock, Portbury, Portishead, Poyntington, Preston Plucknett, Priddy, Priston, Publow, Puckington, Puriton, Puxton, Pylle , Queen Camel , Queen Charlton, Raddington, Radstock, Redhill, Redlinch, Regilbury, Rimpton, Rodden, Rode, Rode Hill, Rodney Stoke, Rowberrow, Ruishton, Runnington , St Decumans, Saltford, Sampford Arundel, Sampford Brett, Sandford, Sandford Orcas, Seaborough, Seavington St Mary, Seavington St Michael, Selworthy, Shapwick, Shepton Beauchamp, Shepton Mallet, Shepton Montague, Shipham, Skilgate, Sock Dennis, Somerton, South Barrow, South Bradon, South Brent, South Cadbury, South Petherton, South Stoke, Sparkford, Spaxton, Standerwick, Stanton Drew, Stanton Prior , Staple Fitzpaine, Staplegrove, Stawell, Stawley, St Catherine, St Michaelchurch, Stockland Bristol, Stocklinch Magdalen, Stocklinch Ottersey, Stogumber, Stogursey, Stoke Lane, Stoke Pero, Stoke St Gregory, Stoke St Mary, Stoke Sub Hamdon, Stoke Trister, Ston Easton, Stourton (part), Stowell, Stowey, Stratton-on-the-Fosse, Street, Stringston, Sutton Bingham, Sutton Mallet, Sutton Montis, Swainswick, Swell , Tatworth, Taunton, Tellisford, Temple Cloud St Barnabas, Templecombe, Theale, Thorne Coffin, Thorne Falcon, Thorne St Margaret, Thurlbear, Thurloxton, Tickenham, Timberscombe, Timsbury, Tintinhull, Tolland, Treborough, Trent, Trull, Twerton , Ubley, Uphill , Upton, Upton Noble, Walcot, Walton, Walton in Gordano, Wambrook, Wanstrow, Watchet, Wayford, Weare, Wedmore, Wellington, Wellow, Wells, Wembdon, West Bagborough, West Bradley, West Buckland, Westbury, West Camel, West Chinnock, West Coker, West Cranmore, West Dowlish, West Harptree, West Hatch, West Lydford, West Monkton, Weston, Weston Bampfylde, Weston in Gordano, Weston super Mare, Weston Zoyland, West Pennard, West Quantoxhead, Whatley, Wheathill, Whitchurch, Whitelackington, Whitestaunton, Wick, Wick St Lawrence, Widcombe, Williton, Wilton, Wilton St Michael, Wincanton, Winford, Winscombe, Winsford, Winsham, Witham Friary, Withiel Florey, Withycombe, Withypool, Wiveliscombe, Wookey, Woolavington, Woolley, Woolverton, Wootton Courtney, Worle, Wraxall, Wrington, Writhlington, Wyke Champflower, Yarlington, Yatton, Yeovil and Yeovilton.

You’ll find us friendly and approachable yet efficient and professional. We have 25 years’ experience in drainage. Drainability was established in 2005.




Septic Tank & Soakaway Replacement


Treatment Plant Installation


Existing Septic Tank/Cesspit Conversion Units


Septic Tank Installation


Septic Tank Systems


Septic Tank Problems


Water Treatment Plant


Wastewater Treatment Plant


Sewage Treatment Works


Sewage Treatment Plant Installation

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