Compliance with the requirement to sample all Regulated supplies annually has decreased across Scotland from 66% in 2022 to 65% in 2023. A notable drop in performance was observed in the Argyll and Bute Council area, where compliance dropped from 96% to 59% (although their Regulated supplies have increased from 522 to 764). Compliance from Perth and Kinross Council also fell from 72% in 2022 to 55%. Highland and Dumfries and Galloway Councils have both slightly increased their compliance, and Scottish Borders and Aberdeenshire Councils have been consistent with good compliance.