A toilet tank washbasin and faucet system that rests on top of a toilet tank is described by way of example. The faucet dispenses water intended to fill the toilet tank over a drain that leads into the toilet tank. The faucet is useful to a person for washing their hands with the water dispensed from the faucet to advantageously provide a second use of the water before flushing down the toilet. Generally described is a basin that sits atop an open toilet tank. A faucet having a nozzle end is attached to the basin via a keyed member that a) positions the nozzle end over a drain in the basin and b) prevents rotation of the faucet when attached to the basin, the drain leads into the toilet tank. Water is provided to a flexible tube that attaches to a bowl refill tube. The flexible tube extends through the faucet and terminates essentially at the nozzle end.

A clean water conservation tank for a toilet providing a secondary clean water source to a toilet holding tank from a secondary holding tank mounted to a surface above and in fluid communication therewith. The secondary holding tank includes an outer container having an actuation body therein, a drain, a hollow puncture body attachable to the drain, and a portable internal container, or a substitute container such as a milk jug, removably disposed therein. The internal container has a one-way spring valve controlling the water level therein. Upon the engagement of the actuation body with the spring valve, the spring valve provides selective fluid communication between the internal container and the toilet holding tank. The puncture body, removably disposed within a cap inside the internal container, is used to puncture the substitute container for water flow through the drain and into the toilet holding tank.

A grey water toilet system utilizing a pedal interface to trigger the toilet flush and to resupply the toilet tank with grey water. The grey water is generally collected from a nearby water fixture such as a wash basin and placed in a storage reservoir until the user flushes the toilet. This invention can be used to retrofit most existing toilets without the need for remodeling thus making it possible to expand the use of grey water for toilets, potentially leading the way for significant fresh water savings. It is estimated that the average American residence uses in the range of 100,000 gallons of water annually and that more water is used to flush toilets than any other individual activity.

This specification describes systems for the treatment and reuse of greywater and related processes. An exemplary system collects greywater from baths and showers and treats it for use in toilet flushing. Influent bathing water passes through a prefilter to remove larger particles and flows into a greywater collection tank. Collected greywater is filtered through a membrane designed to remove suspended solids. Membrane permeate passes through a sorbent media to remove soluble organics and then flows into a permeate tank. A chemical agent is used to disinfect water in one or more parts of the system and optionally to clean the membranes. A control system manages the operation of system. The system operates in a generally daily cycle with permeation dispersed over a material time, for example 4 or 8 hours or more.

A precipitation reclamation system includes a downspout adapter configured to receive runoff precipitation from a precipitation channel for a structure. The downspout adapter is configured to attach to the structure at a vent that places an interior of the structure in communication with an area external to the structure. A reclamation chamber is disposed within an appliance housing. The reclamation chamber has a pump. A reclamation conduit extends from the downspout adapter to the reclamation chamber and is configured to direct the precipitation to the reclamation chamber to define reclaimed water. The pump is adapted to deliver the reclaimed water from the reclamation chamber to a portion of the structure for use.

The disclosure relates to a portable waste collection and sanitation system designed to handle liquid and solid waste, and while conserving water and minimizing odors. The sanitation system is also designed with modular components adapted for in-home installation, where the system can be quickly disassembled and relocated as needed, such as for moving the components to a new location based on environmental conditions.

A method of flushing a toilet that includes opening a first valve to introduce a first supply of grey water into a passage to prime a siphon; opening a second valve to introduce a second supply of water into a bowl from a tank, the bowl having an outlet that is in fluid communication with an inlet of the passage; closing the first valve to shut off the first supply of water; evacuating the contents of the bowl through an outlet of the passage by way of the siphon generated by the introduction of the first supply of water and the introduction of the second supply of water; and closing the second valve to shut off the second supply of water.

A method of flushing a toilet that includes opening a first valve to introduce a first supply of grey water into a passage to prime a siphon; opening a second valve to introduce a second supply of water into a bowl from a tank, the bowl having an outlet that is in fluid communication with an inlet of the passage; closing the first valve to shut off the first supply of water; evacuating the contents of the bowl through an outlet of the passage by way of the siphon generated by the introduction of the first supply of water and the introduction of the second supply of water; and closing the second valve to shut off the second supply of water.

A water use management system may be installed in a setting that contains a primary infrastructure for water use to provide an alternate, modular infrastructure for water use. Fresh water used at various points of use, such as a shower or sink, may be modified by a point of use water conditioner. Water may be modified at the point of use based upon pre-configured routines or manual user selections. Treatments performed on the water may include quality treatments, such as modifying the pH or mineral content, and may also include experience treatments, such as the addition of scents, colors, carbonation, or health and beauty supplements. Additives used during treatment are provided in cartridges that may be inserted and removed from the water conditioner. Cartridges may self-identify when inserted, to aid in compatibility and usability determinations and recycling/recertification processes.

This specification describes an intake filter for use, for example, in a system that collects greywater from baths or showers for re-use in toilet flushing. The intake filter provides essentially dead-end filtration. An influent by-pass may be provided, but the filter is cleaned as required to reduce use of the by-pass. Cleaning is performed when permeability of the filter declines. An upstream sensor may be used to detect the permeability of the filter. In one cleaning method, flowing water, optionally with air, is used to backwash the filter. The impulse of the flowing water also moves one or more valves to direct backwash water to a sanitary drain. For example, pumped effluent may impinge against a first flap to close an effluent drain, the first flap being mechanically linked to open a flap covering the sanitary drain.