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Ownership of North Carotina Public Sewer Systems <br />Mun <br />8! <br />Distrlct <br />6% <br />^ Statewide, sewer systems include 3S1 treatment plants. These plai~ts are called <br />on to treat more than 255 billion g~llons of wastewatcr each year. <br />^ On the highest flow days, wastewater exceeds the treatment capacity of 40 <br />percent of tliese plants. The amount of rain and groundwater entering the <br />sewei lines on these high-flow days (158 million gallons altogether) doubles <br />tlie average daily flow of the Cha~lotte-Mecklenburg system. <br />^ Neady three-quarters of sewage collected Uy public systems originates in <br />residential dwellings. <br />^ A wide variery of trcatment technologies is employed across the statc, with <br />the type often selected to meet local characteristics.'I'echnologies contlnue <br />to advance in complexiry and rost in order to keep pace with regularions. <br />'Chis is reflected in the growing numUer of tertiary treatment systems. <br />^ I~our out of five systems charge a uniform rate for all wastewater treahnent. <br />^ The median monthly bill for sewer service was $25.54 foc households within <br />the jurisdicHonal boundary of the service provider (ciry limits in most cases) <br />and $42.80 for households outside the boundaries. 7'his bill is based crn 6,0(Hl <br />gallons a month of use. <br />^ System owners idenrified $3.44 billion in needed sewer investments by 2010 <br />and an additional $4.08 billion between 2011 and 2030, for a total ueeded <br />investment of $7.52 billion by 2030. Tl~ese improvements would serve new <br />customers, correct such existing problems as aged pipes and bring treatment <br />technologies up to curcent standards. <br />Stormwater systems <br />DefiniHon: In general tenns, stormwater systems collect, store or transpork rain or otlmr <br />stormwater runoff for drainage oc flood wntrol purposes. For Water 2030, stormwater <br />systems were identified and included in the study if a unit of government indicated it <br />had significant drainage or tlooding problems or topography causing stormwater <br />nmoff. <br />G~ <br />Authority 7% <br />1% <br />