Services providedWater City of MarlboroughWebsitehttps://www.marlborough-ma.gov/Phone508-460-3787Community Letter 2023 /node/6462Current Year (2023) Annual Water Quality Test Result/Community LetterPrevious Annual Water Quality Test Results/Community LettersMarlborough 2022 Annual Water Quality Test Result/Community LetterMarlborough 2021 Annual Water Quality Test Result/Community LetterMarlborough 2020 Annual Water Quality Test Result/Community Letter [PDF/4.4MB]Marlborough 2019 Annual Water Quality Test Results/Community Letter [PDF/5.8MB]Marlborough 2018 Annual Water Quality Test Results/Community Letter [PDF/3.3MB]Marlborough 2017 Annual Water Quality Test Results/Community Letter [PDF/3.8MB]Marlborough 2016 Annual Water Quality Test Results/Community Letter [PDF/3.9MB]Marlborough 2015 Annual Water Quality Test Results/Community Letter [PDF/2.7MB]Marlborough 2014 Annual Water Quality Test Results/Community Letter [PDF/3.8MB]Marlborough 2013 Annual Water Quality Test Results/Community Letter [PDF/114KB]Marlborough 2012 Annual Water Quality Test Results/Community Letter [PDF/80KB]Marlborough 2011 Annual Water Quality Test Results/Community Letter [PDF/5MB]