圣约翰河水资源管理区（SJRWMD）和CH2M HILL进行了 涉及使用集成膜系统生产饮用水的广泛试点研究 圣约翰河的水。该研究确定了相关的治疗过程和成本 利用圣约翰河作为替代水源。这个来源是另一种选择 正在评估以抵消佛罗里达州中东部预计的巨大供水赤字。 试点研究的原水来源是佛罗里达州桑福德的门罗湖。这个湖是 是圣约翰河水系的一部分，是典型的佛罗里达地表水的特征 低浊度和高溶解性有机物。此外，湖水会周期性地变浅 在低降雨量期间，咸咸的地下水流入。 在测试之前，一项初步原水特性研究确定了圣约翰河水和 潜在的处理设施将位于泰特斯维尔和德兰之间的河段 圣约翰河。 这项研究的基础是评估能够充分发挥作用的预处理技术 降低水中的有机物和浊度水平（例如，混凝、澄清和过滤） 过滤），以便使用反渗透（RO）膜进行有效的盐去除。 本研究的目的是证明该水源水的可处理性，确定 确定处理的基本参数和适当的设计 该潜在设施的资本和运营成本。其目的是让 本报告将帮助实体在该河段实施地表水处理设施 并为这类供水项目的下一步提供便利。 这项研究的结果是，圣约翰河这一河段的水源是 可处理，可作为饮用水的来源。所有的技术 利益相关者在本研究中确定和选择的测试证明了其可行性 建议在这种水上使用。

The St. Johns River Water Management District (SJRWMD) and CH2M HILL conducted an extensive pilot study involving the use of integrated membrane systems to produce potable water from the St. Johns River. The study identified treatment processes and costs involved in using the St. Johns River as an alternative water supply. This source is one alternative being evaluated to offset a large water supply deficit projected in eastern central Florida. The raw water source for the pilot study was Lake Monroe in Sanford, Florida. This lake is part of the St. Johns River system, and is characteristic of typical Florida surface water with low turbidity and high dissolved organics. In addition, the lake periodically becomes brackish from saline groundwater inflow during low rainfall periods. Prior to testing, a preliminary raw water characterization study identified the treatment requirements necessary for St. Johns River water and a potential treatment facility to be located in the reach between Titusville and DeLand on the St. Johns River. The basis of this study was to evaluate pretreatment technologies that would sufficiently reduce the organic and turbidity levels in the water (e.g., coagulation, clarification, and filtration) so that effective salt removal could be conducted with reverse osmosis (RO) membranes. The purpose of this study was to demonstrate the treatability of this source water, identify the appropriate technology and basic design parameters for treatment, and determine both the capital and operational costs for this potential facility. The intent is that the information in this report will assist an entity in implementing a surface water treatment facility in this reach of the St Johns River and facilitate the next step for a water supply project of this type. The findings of this study are that the source water in this reach of the St. Johns River is treatable and can be used as a source for potable drinking water. All of the technologies identified and selected by the stakeholders for testing in this study demonstrated feasibility and can be recommended for use on this water.