Mapping The Blue Thread: How partnerships are delivering clean water and dignity across Tanzania
Across Tanzania, the distance between a homestead and a safe water point still decides how a child studies, how a mother earns, and how a community thrives. For too many families, that distance has long been measured in hours, not metres. Yet over the last five years, a quiet revolution rooted in partnership, technology and community leadership has been shortening that walk. It has meant taps running at schools, cleaner wards in rural dispensaries, and time returned to households that once spent their days searching for water. Today, that momentum is being woven into a new direction for the sector The Blue Thread linking the gains of recent years to an ambitious business plan for the decade ahead.
Water scarcity is not only a Tanzanian concern; globally, World Water Day draws attention to the billions of people still living without safely managed water, and calls for collective action to end the crisis. In Tanzania, national progress has been real: urban water supply improved from 81% in 2016 to 94% in 2021, while rural access rose from 75% to 84% over the same period. Household sanitation and hygiene have moved in the right direction too, with improved latrines increasing from 42% to 66% (2017–2021) and handwashing facilities from 14% to 40%. These are encouraging markers—but they are also reminders that the job is not yet finished.
Behind those percentages are human journeys that say more than any statistic. At Chiuta Primary School, persistent thirst once cut lessons short and sent children searching for water from uncovered, unsafe wells. “We used to fetch water from local traditional wells whose water depended on rain,” recalls Farida, a Standard Seven pupil. “The water was not safe… it caused diarrhoea and frequent stomach illness.” The arrival of clean, reliable water changed the atmosphere in classrooms and kitchens alike. “Now we don’t go home to drink water,” says her schoolmate Abdul. “We get water for cooking food at school and therefore we do not stay hungry like before.”
At Mandwanga Secondary School, water restored dignity as well as learning. “There was no water at all in the toilets,” says student Zena, noting how the lack of sanitation once forced girls to stay home during menstruation. With water points installed and modern facilities in place, she adds, “Now things are very clean… even during menstruation we feel safe because we can clean ourselves and maintain hygiene from the toilets to the classrooms.” Teachers report that the school has also started a vegetable garden, using the water supply to support meals and teach practical agribusiness skills, with students like Zulfa taking lessons home.
These school level transformations are the most visible signs of a programme that has been steadily reshaping access across districts. Between 2021 and 2024, World Vision Tanzania and its partners provided nearly 500,000 people, 130 schools and 60 healthcare facilities with basic drinking water by constructing more than 100 solar powered water systems with around 2,300 collection points. The approach combines infrastructure with behaviour change and systems strengthening, so that taps keep running and health gains last.
The method is simple to describe and difficult to deliver: work with government from the national level to the village, co finance what the state and communities can sustain, and professionalise the local institutions who will manage water every day. In the Northern Cluster, a co financing model has mobilised more than TSh 2.97 billion (≈USD 1.16 million) across five schemes—Mang’ola Barazani, Qang’dend, Mahhahha, Qauru and Dumbechand—combining contributions from World Vision, RUWASA and Community Based Water Supply Organisations (CBWSOs). The results are tangible: 98 kilometres of pipeline extension, 99 water points, 15,637 household connections, and improved services for 21,750 adults and 8,987 children.
Ask families what changed, and they will point first to time and health. In Mang’ola Barazani, Rozina a farmer and mother says the shift to piped water at home has remade her days: “Before, I never imagined having clean water in my home… now, with water connected directly to my house and the training I’ve received, I see life differently. Water in my home means more time for farming, more time with my children, and a healthier life.” Her son James adds that regular bathing, clean uniforms and time to study have replaced the long treks that once cost him lessons and confidence.
Rozina’s story is broader than a pipe. With training in Empowered World View, good agricultural practices and savings for transformation, she advanced to become a trainer of trainers, formed three savings groups, and invested in an improved latrine and bathroom at home practical steps that reinforce public health and family dignity. The connection fee around TSh 250,000 (≈USD 100) was a stretch, but the dividends are daily and visible.
In Mahhahha village, Endabash Division, the leap from scarcity to sufficiency came in 2024. A 124 metre borehole, 32 solar panels and a 75,000 litre tank now feed 16 distribution points across four sub villages, including the primary school and health centre. Mothers describe the change first in the language of relief. “Before the water project, life was full of fear, pain and exhaustion,” says Sinyorita. The new supply, she explains, has brought peace to households, time for income generating activities and home gardens, and a marked reduction in stomach illnesses among children. “If you take bottled water from Kilimanjaro and compare it with water from this borehole… you’ll see no difference,” she says with a smile.
Mahhahha’s health workers echo that assessment with data: diarrhoea cases among children fell from 16 per month in 2023 to just three per month in 2025, while monthly deliveries at the dispensary rose from two to six over roughly the same period signs that both disease prevention and trust in local services are improving. At the primary school, dropout fell from 15 students in 2022 to two in 2024, and Standard Seven performance climbed from 30% to 67% by 2024; attendance reached 95% in 2025. These are the multipliers that water unlocks education, safety, economic activity and public health rising together.
Crucially, sustainability has not been left to hope. CBWSOs—community based organisations formally tasked with operating and maintaining rural water assets—are being trained and supported to run systems as services, not projects. In Lindi Region, Makonde CBWSO manages water across 19 villages and serves more than 18,000 people. Prepaid metres and smart cards allow 24/7 access while ensuring revenue flows straight to the bank, cutting losses from cash handling and financing essentials like motorcycles for field monitoring. “With prepaid metres and smart cards, we no longer worry about lost cash,” says Asha, the CBWSO accountant. “Every shilling goes straight to the bank. This has given us the confidence to expand services and ensure water flows all the time.”
Government engineers see the shift just as clearly. “Six years ago, the situation was dire,” reflects RUWASA’s Eng. Gislard Mmbando. Today, within certain villages, access within 400 metres has climbed from 0.3% to 86%, supported by more than 15,600 household connections and services to over 100 institutions, alongside hygiene education and the uptake of innovations like prepaid metres. It is a portrait of scale built on shared financing, community participation and professional operations.
Numbers from the last programme cycle tell the same story at national scale. In FY2025 alone, more than 163,000 people gained basic water services through World Vision Tanzania’s work with local government authorities, 27 CBWSOs were strengthened to manage systems, 15 schools received inclusive sanitation, and nearly 96,000 people benefited from basic hygiene services; 13,686 improved household sanitation units were constructed. These outcomes sit alongside emergency responses—such as the cholera containment effort in Itilima District and the Hanang disaster response where WASH support helped stabilise communities and protect learning.
Partnership has been the constant. The model depends on government leadership through the Ministry of Water, RUWASA and district councils; on co investment from CBWSOs who extend distribution points, add household connections and purchase operational assets; and on private sector allies who help accelerate delivery. In Handeni and Lake Eyasi, for example, co financed schemes with banks and local authorities have extended safe water to thousands, reinforcing the lesson that when capital, capacity and community align, transformation follows.
Water also seeds livelihoods. In Mandwanga Village, a savings group’s decision to couple drip irrigation with a secure water supply turned a quarter acre tomato plot into proof of concept. With technical support and a loan arrangement that financed a TSh 1.3 million drip system, the group moved from labour intensive watering cans to efficient, targeted irrigation raising yields, saving time and growing confidence to diversify into crops like Chinese cabbage. “Now we understand about drip irrigation… we hope this season we are going to harvest more,” says Bakari, the group secretary.
Savings groups themselves are becoming local engines of resilience. The Umoja Savings Group in Lindi mobilises weekly contributions, lends up to three times a member’s shares with clear repayment terms, and tracks progress digitally with the DreamSave app. By the end of the 2024/25 cycle the group closed with TSh 5.6 million; in 2025/26 it reached TSh 9.719 million. Members point to improved latrines, school fees paid, livestock purchased and small businesses grown gains made possible by the time and stability that a nearby tap provides.
All of this progress is being drawn together into Mapping the Blue Thread: a business plan that binds infrastructure to governance, finance to behaviour change, and local ownership to national policy. Over FY2026–2030, the plan aims to impact approximately 1,077,188 people through water supply services, with hundreds of thousands more reached through sanitation and hygiene, backed by an estimated five year investment of USD 35.43 million. The strategy prioritises universal coverage approaches in target districts, expands into underserved regions, and keeps schools and health facilities at the centre of delivery places where a working tap yields the greatest returns in learning and life.
Alignment with government frameworks is a non negotiable. Interventions draw directly from national policies and plans, including the Water Sector Development Plan (Phase III), the National Water Policy, sanitation and hygiene guidelines, and the country’s long term development visions. Practically, that means planning with LGAs, strengthening community based operators, co investing with RUWASA, and maintaining a laser focus on service quality, affordability and accountability. It also means learning using operational research to refine what works—and keeping children at the heart of programme design.
There are still obstacles. Financing remains tight in some districts; technology gaps—such as limited underground survey and desalination capacity—can slow progress; and social norms continue to shape household decisions about sanitation and fee payment. Yet the lessons of the last five years are clear. Co financing stretches every shilling; community based programming anchors ownership; and professional CBWSOs, equipped with the right tools and oversight, are capable stewards of rural water systems.
Above all, water changes what is possible. In Mahhahha, the head teacher speaks of cleaner classrooms, better attendance and rising examination results; at the dispensary, a clinician counts fewer cases of diarrhoea and more safe deliveries; in Mang’ola, a teenage boy washes his uniform before school without thinking about the bucket he must carry that evening; in Lindi, a CBWSO accountant reconciles digital payments and approves a motorbike purchase to speed up repairs. Each action is small. Together, they are a blueprint.
The task ahead is to finish the job—to make proximity the norm. That means more boreholes and solar pumping where they fit the geology and demand; more pipeline kilometres and distribution points to cut the last hundred metres; more prepaid metres and smart cards to keep revenue transparent and services responsive; more savings groups and kitchen gardens to turn water into income; and more investment in the people who will run these systems long after the ribbon is cut.
The Blue Thread is, in the end, a promise: that the gains of recent years will not fray with time, that partnerships will deepen rather than fade, and that the voices of communities will remain central to every design and decision. “This project has changed our lives,” says village chairperson Emmanuel Bura of Mahhahha. “Water in Mahhahha means dignity restored. It means children in classrooms, not on footpaths… As a leader, I will ensure this project is protected for generations to come.” The sentiment is shared by engineers, head teachers, mothers and students from Karatu to Lindi: when water flows, futures open. The work continues one system, one school, one household at a time stitching a nation closer to the day when every child grows up with a tap nearby and a timetable shaped by opportunity, not thirst.
By Alpha Nsemwa, Senior Communications officer