Couldn't be more grateful to STS for what they've done. Our old septic tank was completely broken and a leaflet through the door suggested we could get a new one for free. Any sensible person is sceptical at this point, as we were, but the TL;DR is that house building companies buy 'green' credits, so someone still pays, just not you!
Mark and team did an amazing job. We live in a fairly inaccessible spot but they found a way to install, while being considerate of the established garden. They also had to take the outlet pipe around 100 yards to our exit point, which they managed with ease. All done in 3 days and we couldn't be more delighted. Thanks to all involved, highly recommend.
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