The annual report on drinking water in Minto gave top marks of 100% to water systems in Palmerston, Harriston and Clifford.
The municipal water system at the Minto Pines Subdivision got 96%.
No flows at water wells exceeded capacity.
There were no exceedances for organic, inorganic, lead or other chemicals in any of the four water systems.
Water from two wells in Clifford continue to be sampled regularly for arsenic because they are running a little high but still at an acceptable concentration.