Ahlsell's water and sewage assortment includes complete systems for pressure pipes and fittings, gravity flow, drainage and stormwater that can be supplemented with a wide range of underground drainage, wells, chambers, manhole covers, cuffs, service- and gate valves with associated products, couplers, repair collars, tapping saddles, geoproducts, cellular plastic insulation and house foundation, individual sewage system, grease- and oil separators and culverts.