north carolina surface water analysis · 2018-04-04 · north carolina surface water analysis julia...
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Department of Environmental Quality
North Carolina Surface Water AnalysisJulia Cavalier, P.E.
Public Water Supply Section
Department of Environmental Quality
Surface water reporting• Raw, settled CFE turbidity• Raw coliform• Alkalinity, pH• Chemicals fed• Daily plant flow
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Statewide surface water data
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Number of plants per basin
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Basin name Number of plants
Catawba 20
Cape Fear 27
French Broad 13
Neuse 14
Yadkin 36
2016 average raw water turbidity
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2016 annual average raw water turbidity
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2016 average coagulant dose
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Department of Environmental Quality
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More about Cape Fear Basin Plants
Department of Environmental Quality
Cape Fear BasinWater system Plant name Source description Coagulant category
Fayetteville PWC Hoffer Run of river Ferric
Fayetteville PWC Glenville Run of river Ferric
Dunn A B Uzzell Run of river Alum + poly
Harnett County Harnett County Reservoir Alum + poly
Bladen Bluffs Bladen Bluffs Run of river Alum + poly
Brunswick County Northwest Run of river PaCl + poly
Cape Fear PUA Sweeney Run of river Alum + poly
Pender County Pender County Run of river Ferric
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Cape Fear basin turbidity
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Cape Fear basin coagulant dose
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Feb 2016 Cape Fear Plants
Feb 2016 Lower Cape Fear Intakes
Coagulant dose
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Raw Water pH
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Raw water alkalinity
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Department of Environmental Quality
Further research• Inter and intra basin comparisons of turbidity trends• Relationship between coagulant dose and raw water alkalinity
and pH. Any differences between coagulant strategy?• Integrate TOC into data analysis
• TOC monthly, vs daily• Smaller scale analysis – a few plants
• Time series analysis
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Department of Environmental Quality
Questions?• Julia Cavalier
• [email protected]• (919) 707-9067
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