Columbus, Ohio prevents public health concern with the use of s::can online instrumentation

s::can’s spectro::lyser monitors raw surface water quality for the City of Columbus, Ohio. This allows the Utility to be proactive regarding water quality issues. Surface waters can become compromised during storm events. Stormwater runoff from rural and urban sources contributes to elevated levels of nutrients in the surface water. High levels of nutrients especially Nitrates (NO3-N) can be a major concern for infants and pregnant women. Consumption of drinking water that contains high levels of Nitrates can be linked to birth defects and a medical condition known as methemoglobinemia “blue baby syndrome”. This syndrome can be fatal for infants 6 months old and younger. Federal Drinking Water Standards require that the maximum contaminant level (MCL) for Nitrates in drinking water should not exceed 10 mg/l. To ensure accurate predictive modeling, the The Water Quality Assurance Lab (WQAL) installed s::can’s spectro::lyser, The s::can spectro::lyser probes monitor NO3-N, Total Organic Carbon (TOC), Dissolved Organic Carbon (DOC), Turbidity, UV254 and UV436. By continuously monitoring the water quality of the surface water, the WQAL was able to determine in early June 2015 that they would likely see a Nitrate event. The s::can spectro::lyser alerted the WQAL that Nitrate concentrations were as high as 18.0 to 20.0 mg/l in the upstream. The WQAL was able to confirm the results of the probe by performing standard lab testing. Once these results were confirmed, a public health advisory was issued. Due to the remote location of the s::can probe, the team had seven days to prepare for this Nitrate event

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