Humanitarian Water Purification for Sudan Refugees in Chad

Eastern Chad is one of the most acutely underfunded WASH emergencies of 2026. Over 900,000 Sudanese refugees are concentrated in camps and informal settlements along the Chadian border, sharing strained water sources with an already-vulnerable host population. For NGO WASH teams deploying to this context, understanding the right humanitarian water purification approach — and sourcing equipment reliably from within the region — can determine whether a programme meets minimum standards or falls dangerously short.

The Scale of Eastern Chad's Water Crisis

Since Sudan's conflict began in April 2023, more than 700,000 refugees — predominantly women and children — have fled into eastern Chad's Ouaddaï, Sila, and Wadi Fira regions. By early 2026, total Sudanese refugee numbers in Chad had exceeded 900,000, making this one of the most significant refugee-hosting situations in Africa. Together with eastern Chad's resident population, an estimated 1.9 million people in the region are living with inadequate access to safe water.

Water supply figures documented in mid-2025 showed some camps receiving as little as 5 litres per person per day — well below the international standard of 15 to 20 litres needed for drinking, basic hygiene, and food preparation. As temperatures in eastern Chad routinely exceed 40°C during the dry season, the risk of dehydration and waterborne disease from insufficient or contaminated supply becomes acute within hours, not days. A cholera outbreak that spread through multiple health districts across Guéra, Ouaddaï, and Sila provinces in 2025 underscores how rapidly WASH failures translate into disease transmission in this context.

Despite the scale of need, Chad's 2026 humanitarian response plan remains chronically underfunded — as of early 2026, only around 11 per cent of requirements had been met. This shortfall places enormous pressure on WASH teams to maximise the impact of every item procured, and makes procurement decisions — what to buy, from whom, and how far in advance — genuinely consequential.

WASH Challenges Specific to Eastern Chad

Eastern Chad presents an operational environment that directly shapes equipment selection. The region combines extreme heat, limited groundwater infrastructure, significant distances from major supply corridors, and highly turbid surface water during the rainy season from June to September. These factors interact in ways that matter critically for product performance in the field.

Turbidity is a key variable for any chlorine-based water purification programme. Aquatabs and other NaDCC tablet treatments perform most reliably when source water is below approximately 20 NTU. Eastern Chad's open catchments, wadis, and unprotected wells can far exceed this threshold, particularly after rainfall. In practice, many field teams deploy a two-stage approach — coagulation-flocculation or basic sedimentation to reduce turbidity before chlorination — ensuring that residual chlorine levels remain effective at the point of consumption.

The logistics environment adds another layer of complexity. Eastern Chad is remote from established East African freight corridors, road access to many sites is poor or seasonal, and the operating environment demands equipment that is robust, compact, and maintainable by field staff without specialised tools or spare parts. Product simplicity and supply chain reliability are as important as technical specification.

Humanitarian Water Purification Options for Eastern Chad

Aquatabs — NaDCC-based point-of-use tablets — remain the standard for acute-phase emergency response across refugee contexts. In eastern Chad, where household-level treatment is the primary mechanism for reducing cholera transmission, their advantages are well established: WHO-approved performance against Vibrio cholerae and other bacterial pathogens, a shelf life of three to five years under correct storage, ease of distribution without equipment, and procurement availability from regional stock. Having adequate Aquatabs pre-positioned in-region avoids the delays of international resupply, which can run to four to eight weeks from European or Asian sources.

Bladder tanks and collapsible water storage are essential for the distribution-point model that dominates Chad's refugee response. Where piped supply is unavailable — which describes most of the operational area — centralised water collection, chlorination, and storage followed by controlled distribution is the standard approach. Flexible pillow tanks and rubber bladder tanks allow clean-water holding at distribution points without permanent structures. UV-resistant materials and covered configurations significantly extend the period during which stored water remains within safe residual chlorine parameters in extreme heat.

Emergency WASH kits — pre-assembled packages combining chlorination chemicals, jerry cans, hygiene items, and basic sanitation materials — provide the fastest deployment mechanism for new arrivals and acute-phase response. Standard NFI kits aligned to UNHCR and WASH Cluster specifications ensure distributions meet minimum humanitarian standards without requiring on-the-ground assembly from individual components. Our WASH products page covers the full range we stock for emergency response contexts across East and Central Africa.

Sourcing Humanitarian Water Purification Equipment from the Region

For NGOs operating in eastern Chad, procurement planning needs to account for two realities: the scale of unmet need and the distance from established international supply routes. The contraction of USAID-funded pre-positioning pipelines since early 2025 has significantly reduced the buffer many WASH programmes previously relied on, making regional suppliers with in-region stock increasingly important to programme continuity.

SLS operates pre-positioned hubs in Juba and Kampala, supplying WASH equipment into complex operational environments across East and Central Africa. For procurement teams planning Chad programmes, our regional logistics experience covers product selection for extreme-heat and high-turbidity contexts, lead-time management from in-region stock, and routing guidance for onward supply into the Sahel corridor. Sourcing from a regional supplier rather than routing orders through international supply chains reduces lead times substantially — a material advantage when funding windows are short and programme start-up is time-sensitive. You can also learn more about our pre-positioned warehousing capability for humanitarian operations.

The funding constraints affecting Chad's response make procurement efficiency critical. Equipment that performs to specification in extreme heat, maintains shelf stability under field storage conditions, and aligns with your WASH cluster's treatment protocols directly affects how far each procurement dollar stretches in a chronically underfunded response.

Plan Ahead for the 2026 Rainy Season

Eastern Chad's rainy season runs approximately June to September, and historically it intensifies the WASH crisis. Flooding disrupts access to camps, damages latrines and water points, and elevates disease transmission risk at precisely the moment when road-based resupply becomes most difficult. NGO teams scaling up in eastern Chad for the 2026 rainy season should be reviewing Aquatabs stock levels, bladder tank inventory, and cholera-response kit positions now — before routes deteriorate and procurement lead times extend.

If your programme is operating or planning operations in eastern Chad, we can support your WASH equipment procurement from our regional stock. Contact SLS to discuss your requirements with our team.