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Water Project

Google Earth view of water project locations in Hedaru, Tanzania.Our current focus is on a large water system rehabilitation project that is underway. Hedaru is a village of over 22,000 people. The only water sources available are a few streams that trickle down to the village from the mountainside. The water is diverted by the farmers on the mountain to irrigate their fields, and what is left is transported through small, black plastic hoses, which are damaged at many points between the water source and the city. Because there is no regulation of how much is diverted, during the day the farmers take most of the water and little or nothing reaches the people in the village.

In the early morning, the water is sent to the village, and each family is allocated a block of time when they can go to an assigned faucet or tank to fill their buckets with water. People stand in line, waiting to fill buckets for all of their daily water needs. If the water runs out, the remaining people in the line don't get water that day.

The system is 35 years old, dilapitated, and designed for a time when Hedaru was just a very small village. Much needed maintenance has not been done because the population is too poor. Remember, the average annual income in Tanzania is only about $200 a year!

After a survey of the entire watershed of the area and water usage, the District Water Engineer and Water Commissioner determined that rehabilitating and expanding the current water system was the most effective and economical way to begin addressing the water needs of Hedaru.

The image at right shows the approximate locations of each of the phases of the water project. Note that the white capped mountains are not snow capped; the 3D representation on Google Earth flattened the clouds onto the mountains.

Project Origins

The site of the Rangeni intake structure.The early stages of our project took months of planning and working with the people of Hedaru to set work in motion. While much of the survey work had been done previously, there was a lot of leg-work to be finished before the Phase 1 could be started. Todd and Lori Byerly, two missionaries based in Same, a town about 50 km northwest of Hedaru, were instrumental in the early stages of our project since they have great insights into Tanzanian culture, financial issues, and communication.  They continue to be very helpful in our efforts.

In the spring of 2007, Todd visited the planned location of Phase 1 with some of our Hedaru friends. We were excited to hear about the progress in a letter from Todd that we received after his visit.

Read more: Project Origins

 

Phase 1: The Rangeni Intake Structure

Rangeni water intakeThe first step in improving water supply is to find a way to more evenly distribute it for the use of everyone. To do that, it's necessary to go higher in the mountains than before to where the stream is running full, fast, and fresh out of the spring. The site that was chosen is called Rangeni.

Carrying 100# bags of cement down a very steep mountain on their heads for 2 hours at a time, the villagers and volunteers from the mountain did amazing work in 21 days! They drove materials up the back side of the mountain on the only road available, brought down the materials by hand, (or head!) and built an intake structure, somewhat like a small dam. It captures some of the water to be sent by pipe down the mountain to Hedaru, and leaves the rest of the stream to continue it's original path, to be used by farmers in the mountain to irrigate the crops that feed the people in the area.

The most modern technology and materials were used, the quality is first rate, and the labor was 100% volunteer!

Phase completed.Total cost of $3,000 right on budget! Mission accomplished!

   

Phase 2 - Storage Tank at Sine

A cistern similar to the one we will build.The second step in the Water Rehabilitation Project is to build a 20,000 gallon water tank at Sine that the pipe coming down the mountain from Rangeni will attach to. This is a very key part of the whole project, and will accomplish three major things.

1. It will give the people on that mountain access to water up on the hill, rather than down in the valley in the stream. Why does this matter? First, it's a long ways down to the river from where they live, and it simply saves time and energy. Second, it allows them to do some irrigation of gardens on the east side of the valley. The way the land lays, you can irrigate by gravity flow out of the stream to the mountain on the west side of the valley, but this east side is up hill and water won't flow there.

2. It allows them to catch more rain during the rainy season to be used later during the dry season. Tanzania is equatorial, so it has a dry season from May to October, a short rainy season in November, more dry season from December to February, and a long rainy season from March to April. During the rainy seasons, rain can fall in torrents, and most of it washes away because they have no way to catch and store it. This tank allows catchment and storage.

3. It helps regulate the distribution of a resource there just isn't enough of. It is important for farmers on the mountain to irrigate and grow food, and it is important for people in the village below to have drinking water. To keep peace among the people as the supply of water dwindles, fair distribution is a must. The tank and pipe help that situation.

Paid for and in progress!

Approximate time for completion: 6 months Approximate cost: $17,000

   

Phase 3 - Pipe from Rangeni to Sine

The terrain for the pipe in Phase 2 is difficult.The third step of the Hedaru Rehabilitation Project will be to take the water being caught at the Rangeni Intake Site, and pipe it down the mountain to the large holding tank at Sine (from Step 2).

So, what does this piping of the water entail? Looking at the terrain in which they will be working, it's hard to imagine how this can be accomplished any way except by hand. The mountain is steep and covered with rocks and trees. The dirt path up the mountain is narrow and twisted. The plan is to run the pipes underground in the soft soil between the rocks, with many twists and turns. They will dig down deep enough to prevent vandalism, and to keep the pipe temperature relatively steady which increases the longevity of the pipe. In the places where the pipe has to be near the surface because of the lay of the ground, they will reinforce it with metal "sleeves" so people can't tap into it. Along this pipe path they will also construct Break Pressure Tanks, (BPTs) which are used to slow the flow of the water so it does not collapse the pipe. Five BPTs will be needed between Rangeni Intake Site and Hedaru Village.

The pipe is the most expensive part of this water project, and with inflation, the cost will go up the longer we wait.

The distance this pipe will go is 2.8 km, as the crow flies. We are budgeting closer to 3 km of pipe to allow for twists and turns.

Approximate time for completion: 3 months Approximate cost: $35,000

   

Phases 4 and 5 - Pipe from Sine to Hedaru and throughout Heduru

Walking hours every day for water is a fact of life in much of Tanzania.Phase 4 is to lay approximately 1.5 km of pipes from the water tank at Sine into the village of Hedaru.

Approximate cost $15,000

Approximate time to completion: 5 weeks

 

Phase 5 of the Hedaru Rehabilitation Project will be to repair and extend the underground pipe system in the village. Throughout the center of the village of Hedaru there are small water pipes leading to communal spigots. If you walk around this part of the village, you notice that while the orange earth is parched, there are spots in the dirt roads that are damp. These spots are where there are leaking pipes under the road. Some places the earth has worn away and the pipes are above ground. During the day you can see the cracks in these pipes, and at night when there is water in the pipes they spray water into the air.

There are many parts of the village that have no water pipes to at all. Four of the primary schools, and the dispensary/medical clinic, as well as the neighborhoods that surround them have no running water at all. They walk with buckets each day to fetch water.

On the edge of town, an area has been built as a marketplace. It is easily accessible by the herders who live in the desert and bring cattle, goats and sheep to market. It has plenty of space for the animals, The new market on the outskirts of Hedaru.including pens. It has a place for dipping and bathing the animals to reduce parasites. It has a slaughter house for processing animals that are sold. It has a market area under construction for people to bring produce to sell. It is the Tanzanian equivalent of the Mall of America, and its construction is nearly finished! This will drastically increase the amount of commerce being done in Hedaru, thus increasing income for many people.

What is Missing? Water. This marketplace can't be finished because there is no water for mixing cement to complete construction. Even if the construction were completed, they would need water for dipping the animals and running the slaughter house. Re-piping the village will finally give them the water they need to complete the project and have a successful market.

Replacing the leaky pipes and laying them deeper underground will save a lot of water, and will ensure that more people have the water they need daily. The goal is not to get water to each house and business, but to get water to more areas of the village with less waste.

Time for completion: 6 months Estimated Cost: $12,000

   

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