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Comprehensive Plan Sanitary Sewer Sub -Element <br />separation, the potential of contamination from septic systems seeping into wells or waterbodies <br />is greatly increased. <br />The DOH requires a minimum separation of 75 feet between wells and septic systems for parcels <br />recorded or platted after 1972. The DOHrequires new construction utilizing a well and septic <br />system to be a minimum of %z acre (approximately 21,780 square feet). If a lot is served by a <br />public water system, a septic system may be used even if the lot is as small as '/ acre <br />(approximately 10,890 square feet). <br />There are many areas of the county in which existing subdivisions contain lots which do not <br />meet the minimum acreage requirements. Nevertheless, parcels recorded or platted prior to 1972 <br />that are smaller than 21,780 and 10,890 square feet are grandfathered in and are being developed <br />and repaired based on lot flow allowances utilizing septic systems. Table 3.A.3 lists <br />subdivisions in the county urban service area that are significantly less than 10,890 square feet or <br />constructed with older block septic tanks posing an increased health risk and/or increased <br />probability of groundwater contamination associated with continued septic system use. <br />TABLE 3.A.3 - INDIAN RIVER COUNTY SUBDIVISIONS WITH INCREASED HEALTH <br />RISKS AND/OR INCREASED PROBABILITY OF GROUNDWATER CONTAMINATION <br />ASSOCIATED WITH CONTINUED SEPTIC TANK SYSTEM USE <br />1. <br />Oslo Park <br />2. <br />Paradise Park <br />3. <br />Stevens Park <br />4. <br />Durrance Place <br />5. <br />West Wabasso <br />Source: DOH- Indian River <br />Besides the above list of subdivisions with increased health risk and potential for localized <br />groundwater contamination, there are subdivisions currently served by septic systems that are <br />located close to the Indian River Lagoon, the St. Sebastian River, or to drainage canals or other <br />streams/surface waters potentially resulting in a disproportionally higher negative impact on <br />Indian River Lagoon water quality. In 2016, county Utilities Services funded a septic to sewer <br />study to identify and rank those platted subdivisions served by septic systems that have a <br />disproportionately higher negative impact on the Indian River Lagoon. The study was performed <br />by Schulke, Bittle and Stoddard, LLC (SBS), was accepted by the Board of County <br />Commissioners on July 10, 2017, and is available online via the county website. <br />Septic to Sewer Study: Evaluation and Ranking <br />The goal of the study was to identify and rank the areas of septic system use having <br />disproportionately higher potential for negative lagoon impact based on various physical and <br />environmental factors, and to determine the feasibility of incorporating septic to sewer <br />Community Development Department <br />Indian River County 21 <br />AttaAMent 4 <br />