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3.3 <br />3.3.1 <br />high-level wells. As a long-term plan, the City is in the process of determining the best option, <br />but are considering: <br />• Mixing water from different wells to lower manganese wells; <br />• Drilling new drinking water wells; <br />• Installing City filtration systems; <br />• Constructing a water treatment plant; and <br />• Using water from neighboring municipal water systems. <br />Table 6 — Manganese in Ramsey Wells <br />Manganese (mg/L) <br />MDH HBV (mg/L) <br />Well 1 <br />0.320 <br />0.100 <br />Well 3 <br />0.229 <br />0.100 <br />Well 4 <br />0.371 <br />0.100 <br />Well 5 <br />0.022 <br />0.100 <br />Well 6 <br />0.023 <br />0.100 <br />Well 7 <br />0.052 <br />0.100 <br />Well 8 <br />0.223 <br />0.100 <br />Note: Well 2 used exclusively for irrigation <br />Secondary Drinking Water Standards <br />Secondary Standards are non -enforceable guidelines for contaminants that cause aesthetic or <br />cosmetic effects, such as taste, odor and color, and can cause problems with piping. The <br />Secondary Standard for manganese is discussed in Section 3.2. Table 7 presents the iron and <br />hardness data for Ramsey's wells. <br />Table 7 — Iron and Hardness in Ramsey Wells <br />Well <br />Iron (mg/L) <br />Hardness (mg/L <br />CaCOs) <br />Well 1 <br />0.551 <br />256 <br />Well 3 <br />0.529 <br />280 <br />Well 4 <br />0.240 <br />- <br />Well 5 <br />0.801 <br />- <br />Well 6 <br />0.787 <br />211 <br />Well 7 <br />0.818 <br />225 <br />Well 8 <br />0.704 <br />- <br />Iron <br />The secondary standard for iron is 0.3 mg/L where iron concentrations above the secondary <br />standard can cause a rusty color to the water, sediment build-up, a metallic taste, and reddish or <br />orange staining. As shown on Table 2, the drinking water from the Ramsey wells consistently <br />FEASIBILITY STUDY RAMSY 154354 <br />Page 11 <br />