While most of the minor cults and superstitions surrounding Demnoph Oceanic Storage System have little relation to any major religious organization, there is one exception. The Wave Whisperers are an official sub-sect of the Church of Humanity, Repentant who grew out of the cults and superstitions surrounding the Demnoph Cisterns. Their founder believed that not only were the Cisterns very much inhabited by great ocean spirits, but that these spirits were neither Divine nor semi-Divine, but alien.
The Wave Whisperers believe that they can hear these roars in the drip of Demnoph faucets, in the waves of the Cisterns' reservoirs, and in the rushing of water through pipes. They believe they can hear, and when they hear, they repent. For the Wave Whisperers, the ultimate act of repentance is to break open Demnoph's cisterns and flood the planet. For this reason, they have historically faced oppression by the authorities.
An unspoken agreement between the Church of Humanity, Repentant and A.C.R.E. is that the Wave Whisperers can be tolerated as long as they restrict themselves to minor acts of pipe sabotage.