DAR ES SALAAM, April 12 -- THE rainy season is still with us and as rains fall across our towns and villages, we should not merely watch water flow past. We should harvest it, store it and use it wisely. Rainwater is a timely gift, often wasted through neglect and poor planning. Buckets, tanks, gutters and simple collection systems can turn every roof into a source of security. This season offers a practical chance to build habits that will sustain us when the skies dry.

Yet many households still depend entirely on uncertain supplies, ignoring what falls freely above them. The government should strengthen public education on rainwater harvesting, treatment and careful use. Clear guidance, regular campaigns and community demonstrations ca...