*By the way, the "and us" is why we should care!
It's called a hauled water system (actually the full name is Residential water system with temporary storage tank), and that's the kind of system that has to be used for these remote locations, especially since they're not able to use any groundwater, either above or below ground, because of the contamination. This system was developed in 2009 and I'll post a few pictures and explanations of the system from a document I got from the Forgotten People website. [Project Pueblo has partnered with Forgotten People to help build these systems for the Navajo people.]
During the Black Falls water project, local residents designed and deployed a temporary water storage system using an elevated external water storage tank and kitchen sink. The tank provides high-capacity storage as needed to support efficient water delivery services and replaces the unsafe system of buckets currently in widespread use. The system can provide an immediate and low cost means to provide safe access to drinking water to a large population. Minimal training is needed to perform the on-site work, so that rapid up-scaling can be achieved using local labor. Deployment of the systems links the people into the provider network for health care, water delivery, and other related services. The system design is well suited for deployment via a community cooperative approach, which can reduce cost and improve sustainability. The long-term plan was to install solar-powered cisterns, after which the materials from the temporary external tanks could be reused at other locations.
The temporary water system provides an immediate and low cost way to transition families away from unsafe water sources. Provision of these systems can be the entry point to connecting families to the full range of health care and sanitation services. The findings from Black Falls include:
- • Support water delivery services: A large on-site tank reduces the cost of operating a delivery service, as fewer trips to each home are required. The recommended design for replication uses a 405 gallon tank, which can hold more than the monthly consumption of most of the families at Black Falls.
[The Black Falls project used 210 gallon white water transportation tanks, but the specifications have been changed to the 405 gallon black tanks because 1.) black tanks should be used to prevent algae growth. The use of white tanks in Black Falls required the tanks to be wrapped in black plastic, which creates a maintenance problem; and 2.) tanks designed for fixed storage are cheaper than transport tanks and a larger tank can be provided at less cost.]
• Replaces unsafe storage systems: The system provides a closed storage and distribution system, which eliminates the bacterial and chemical contamination associated with the buckets and improvised containers.
• Fast installation with limited training: The system was designed for quick on-site installation. If a stockpile of parts and preassembled kitchen units is available, a house can be brought on line in a few hours. Minimal training is needed to perform the on-site work, so that rapid up-scaling can be achieved using local labor.
• Efficient replacement: When a family subsequently obtains a cistern or access to piped water, the storage system can be moved to another home, while the sink/counter can be used with the hot water and pressurized system with few adjustments.
• Service Networking: The deployment of the home system gets the families involved with the service delivery system, so that they learn about safe use of water, obtain access to health and other services, and become proactively involved with the agencies providing water and sanitation systems
I hope this helps to give you a clearer picture of the whole project!