Under-sink water filter installation in Coventry
Getting an under-sink drinking water filter fitted in Coventry — what it costs, whether you could do it yourself, and where the job stops being DIY.
Moderately hard
Severn Trent Water
Water in Coventry
- Coventry is supplied by Severn Trent, and sits in the middle of that company's wide hardness range — generally moderately hard.
- Because Severn Trent's supply spans soft Welsh reservoir water to hard groundwater, Coventry households genuinely need to check rather than assume.
- The city was extensively rebuilt after 1940, so a large share of its housing is post-war — which generally means more accessible plumbing and easier softener installation than in Victorian stock.
- Coventry's automotive and manufacturing sector includes industrial water treatment requirements distinct from the domestic and hospitality market.
- Moderately hard water puts most Coventry households in scale-inhibitor rather than softener territory, though it is close enough to the boundary to be worth testing.
Your water is moderately hard — worth protecting the boiler, not much more.
Scale will build up slowly on heated surfaces. A scale inhibitor on the boiler is proportionate and inexpensive, and some manufacturers start asking for one around this level. A softener is still difficult to justify on cost. Test your own tap before deciding — at this level the exact figure matters.
Who supplies Coventry
Water company boundaries do not follow council boundaries. Check your postcode for the supplier at your address.