The Channel Islands recently shattered temperature records for May, with Jersey hitting a scorching 34.2°C (93.56°F) and Guernsey reaching 31.5°C (88.7°F). Despite the intense three-day heatwave, water officials are thanking residents: public conservation efforts successfully prevented dangerous spikes in water demand.
Thank you for reading this post, don't forget to subscribe!The Numbers At A Glance
While water consumption naturally ticked up over the holiday weekend, mindful habits kept usage well below previous historical peaks.
| Metric | Jersey Water | Guernsey Water |
| Current Reserves | 96% full (~120 days of supply) | Stable and healthy |
| Heatwave Demand | ~21M litres/day | 15.2M litres on Monday |
| The Deviation | +3M litres/day above May average | +3M litres total over the 3 days |
| Outlook | No imminent shortages; summer peaks could top 23M litres | First time demand topped 15M litres since July 2025 |
Why “Every Drop Counts”
Guernsey Water noted that the modest increase in usage proves islanders are actively listening to efficiency messaging. Jon Holt, operations manager at Guernsey Water, emphasized that minor daily choices collectively make a massive difference.
Because full reservoirs in Jersey only hold about 120 days of water, ongoing conservation is vital to avoiding standard summer restrictions like hosepipe bans.
How you can help keep stocks healthy:
- Keep daily showers under five minutes.
- Turn off the tap entirely while brushing your teeth.
- Stay mindful of unnecessary outdoor water waste as the warm weather continues.
