WHO warns Gaza rainy season to worsen water contamination and diarrhea
This digest was compiled by AI from multiple sources — links to the originals are below.
The World Health Organization warned on Tuesday that approaching winter rains will worsen Gaza's public health crisis by flooding sewage and contaminated water into living areas. Water testing in the first eight months of 2026 showed microbiological contamination almost tripled, from under 6% in January to over 18% in August. Acute diarrhea cases nearly doubled since March, rising from about 27,000 to over 48,000.
Key Facts
- Microbiological contamination of water samples in Gaza rose from under 6% in January to over 18% in August 2026.
- Acute diarrhea cases in Gaza nearly doubled from about 27,000 in March to over 48,000 by late August 2026.
- The WHO tested approximately 6,700 water samples in Gaza during the first eight months of 2026.
- Doctors Without Borders said in April that Israel had destroyed or damaged nearly 90% of water and sanitation infrastructure in Gaza.
Water Contamination
WHO representative Reinhilde Van de Weerdt said water quality and contamination remain a major issue while minimum water quantities are not provided. Testing of approximately 6,700 water samples from January through August 2026 showed microbiological contamination almost tripled. Contamination rose from under 6% in January to over 18% in August, according to the WHO tests. Van de Weerdt warned that winter flooding will send sewage, waste and contaminated water into places where people sleep, cook and care for loved ones.
Disease Surge
Acute diarrhea cases in Gaza almost doubled since March, rising from around 27,000 to over 48,000, Van de Weerdt said. The WHO called for unimpeded and expedited entry of humanitarian supplies, including materials for permanent shelter and sustainable water and waste management. More laboratory supplies are urgently needed to confirm causes of disease and better respond to outbreaks, the WHO said.
Infrastructure Damage
Doctors Without Borders declared in April that Israel has been using water access as a weapon in Gaza. The group cited UN, EU and World Bank data indicating Israel destroyed or damaged nearly 90% of water and sanitation infrastructure in the territory.
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WHO warns Gaza rainy season to worsen water contamination and diarrhea