This is an excellent walk through of an Earthship built by Earthship Biotecture in Miles City, Montana. It is very representative of the standard Earthship layout that has evolved over recent years (almost identical to the Earthship in Ger, France). It is also valuable in showing you what kind of noise the WOM (Water Organising Module) produces. It’s encased in a box and some Earthships have also used insultation to limit the noise.
The cool thing is that here in New Zealand I have seen a very affordable, waterproof (IP56) filtering system that can be sited outside of the house, reducing the noice pollution in house. I hope to include a review of the product sometime soon (along with a review of a NZ made rainwater harvesting system).