In comparison, experimental results showed that both solution pH and temperature were significant for defining soluble Mn²⁺ removal using the MnO_x(s)-coated media process; further, the impacts of pH on soluble Mn²⁺ removal were magnified under low temperature (<10 °C) conditions. Information presented in Table 2 shows the percentage of finished water soluble Mn²⁺ concentration values that exceeded the recommended Newport News Water Authority goal of 0.015 mg/L when sorted by pH and temperature for the full-scale Harwood's Mill plant data. As shown in Table 2, the percentage of finished water soluble Mn²⁺ concentration values exceeding the goal generally decreased as the solution temperature increased. Likewise, the percentage of finished water soluble Mn²⁺ concentration values exceeding the goal of 0.015 mg/L decreased as the pH increased within each temperature range. Finally, results presented in Table 2 also demonstrate that an increase in solution pH may at least partially mitigate the negative effects of low water temperature on Mn removal using MnO_x(s)-coated filter media treatment systems.