Test Results: Chlorine Levels at City Water Storage Sites 2019-2020 March 31, 2020 Chlorine-Residuals-at-NTMWD-Treated-Water-Ground-Storage-Reservoirs_2020-2019-maintenance-periods_3-31-2020 chlorine-residuals-at-ntmwd-treated-water-ground-storage-reservoirs_2020-2019-maintenance-periods_3-31-2020 Download Document