IWD和IWD 松湾水区（PCWD）是 加州小型地下水系统 从柔软的、温和的酸性中提取 二氧化碳含量高的水源水 溶解无机碳浓度。 两个系统都超过一个或多个 铅和铜的作用水平 1993年和1994年，IWD和PCWD进行了调查 曝气作为一种提高pH值和 更换抑制剂或其他化学添加剂。 经过初步测试，全尺寸深加工 这两个城市的气泡曝气系统都上线了 1998年10月在水区举行。到1月 1999年，IWD和PCWD轻松领先 铜的作用水平。此外，氡 （Rn）来自PCWD的样本显示99% 降低Rn水平，确保合规性 随着即将到来的Rn监管。此外 利用曝气控制腐蚀 简化处理，改善水质 在大多数方面都是高质量的。 当水源水化学适宜时， 曝气处理提供了一种简单而有效的方法 廉价的化学加药替代品 用于铅和铜的腐蚀控制。 许多较小的供水系统都在努力解决这一问题 化学品进料系统的操作和选择 磷酸盐腐蚀的化学剂量 抑制剂。进行适度的初始资本投资 有了良好的规划，供水系统 在适当的化学条件下，可以使用曝气 取代化学加药 除氮时的腐蚀控制 任何监管建议。最终的结果是 成本效益高、操作方便 这可以同时解决其他潜在问题 水质问题。包括33个参考文献、表格和图表。

The Idyllwild Water District (IWD) and Pine Cove Water District (PCWD) are small California groundwater systems drawing from soft, mildly acidic source waters with high carbon dioxide content and dissolved inorganic carbon concentrations. After both systems exceeded one or both of the lead and copper action levels in 1993 and 1994, IWD and PCWD investigated aeration as a way to increase pH and replace inhibitor or other chemical additions. Following pilot-testing, full-scale deep bubble aeration systems went online in both water districts in October 1998. By January 1999, IWD and PCWD easily met the lead and copper action levels. In addition, radon (Rn) samples from PCWD showed a 99% reduction in Rn levels, ensuring compliance with upcoming Rn regulation. Furthermore, the use of aeration for corrosion control simplified treatment and improved water quality in most respects. When source water chemistry is appropriate, aeration treatment offers a simple and inexpensive substitute for chemical dosing for corrosion control of lead and copper. Many smaller water systems struggle with operating chemical feed systems and selecting chemical dosages for phosphate corrosion inhibitors. For a modest initial capital investment and with good planning, water systems with the appropriate chemistry can use aeration to take the place of chemical dosing for corrosion control while removing Rn beyond any regulatory proposals. The end result is cost-effective, operator-friendly treatment that can simultaneously resolve other potential water quality issues. Includes 33 references, tables, figures.