Worthing is set to phase out harmful weed killers in public green spaces.
Worthing Borough Council has said it is replacing glyphosate-based pesticides with environmentally-friendly non-chemical products over the next 18 months.
This comes after there have been calls around the country for glyphosates to be banned, after allegedly being linked to cancer.
It has also been reported that the pesticides could be a factor of decline of pollinating insects and the ecosystems they support.
Vicki Wells, Worthing Borough Council's Cabinet member for the environment, said it could help the area's coastal tourism.
"While we aspire to Blue Flag status, we must sustainably maintain our coastal areas," she said.
"This means ending glyphosate use along the promenade because it can enter our coastal waters via the surface drainage system."
The move has been welcomed by local environmental campaigners.
Worthing Climate Action Network member, Emma Cameron, said: "We and others have been campaigning for this for a while.
"Studies have found that glyphosate-based herbicides can interfere with organs and biochemical pathways in mammals."
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