Test Results: Chlorine Levels at City Water Storage Sites 2020-2021 March 22, 2021 Chlorine-Residuals-at-NTMWD-Treated-Water-Ground-Storage-Reservoirs_2021-2020-maintenance-periods_03-30-2021 chlorine-residuals-at-ntmwd-treated-water-ground-storage-reservoirs_2021-2020-maintenance-periods_03-30-2021 Download Document