People in Guernsey urged to use less pesticides or water bills could rise

Guernsey Water is urging islanders to use less pesticides and weedkillers, otherwise they could face water use restrictions or significant bill hikes in the future.

The Vale Pond water catchment, which was used to provide around 250 million litres of water each year, can no longer be collected due to high chemical levels.

Both commercial and domestic use of pesticides are thought to be contributing.

Margaret McGuinness, Water Quality Risk Manager at Guernsey Water, said: "With our climate warming up and more severe droughts predicted for the future, the fact we are currently unable to collect what would equate to around 19 days' worth of water during drought for the Island is significant and concerning."

If the use of pesticides and weedkiller continues to increase the alternative would be to provide more water treatment, but this would require major investment and would also increase operational and maintenance costs.

This could lead to a rise in customer bills. Islanders will also be more likely to need water restrictions such as hose pipe bans during periods of drought. "We are asking Islanders with some urgency to reconsider their use of pesticides and weedkiller and look to alternatives for the benefit of the island's vital water resources and environment. Otherwise, unfortunately it could be a case of spray now, pay later," said Margaret McGuinness.

It comes after an increase in monthly water and wastewater charges was introduced in January (2022).

Vale Pond is one of many breeding habitats for bird life across the island and until recently, a key resource for Guernsey Water. 

It is one of only 9 sites officially designated as being of special significance in Guernsey and is home to some critically endangered species, like the freshwater eel.

Julia Henney, Guernsey’s Biodiversity officer said: “It’s one of the jewels in our crown, it’s one of the most important sites for wildlife and it’s really important that we protect it and keep it that way. 

"The strategy for nature fund this year actually provided funding for the pollinator project to work on a pesticide free action plan for the island.”

Work is already under way to encourage people to look at alternatives to pesticides such as vinegar to clear weeds from gravel, encouraging plants which feed beneficial insects that help keep pests at bay and taking weeds out by hand or with a garden hoe.

Louise Gabriel from the Guernsey Pollinator Project says all islanders need to do is garden with the wildlife in mind.

“There’s more natural methods for bug spray too. I like to use a bit of soapy water – there’s some good organic things as well and it’s just as effective and it’s healthier for everyone.”