Corrosion control for high DIC groundwater phosphate or bust

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Authors:Rezania, Lih-in W.; Anderl, William H.
Author Affiliations:Primary:
Minnesota Department of Health, Section of Drinking Water Protection, Saint Paul, MN, United States
Volume Title:Proceedings, 1997 annual conference; Volume D, Water quality
Source:Proceedings, AWWA Annual Conference, Vol.1997(Vol. D), p.167-177; American Water Works Association, 1997 annual conference, Atlanta, GA, June 15-19, 1997. Publisher: American Water Works Association, Denver, CO, United States. ISSN: 0360-814X
Publication Date:1997
Note:In English. 4 refs.; 3 tables
Summary:In Spring 1996, community public water systems in Minnesota that have installed an optimal corrosion control treatment started their follow-up lead/copper monitoring and the biweekly corrosion control related water quality parameters monitoring program. The results show that phosphate treatment reduces both the lead and copper levels in consumers taps. Maintaining an ortho-phosphate residual at or above 1.0 mg/L can successfully control the lead levels. However, the ability to control copper has been capped at 50 to 60 percent reductions. Even with such appreciable reductions, the 1.3 mg/L copper action level may remain unattainable.
Subjects:Controls; Copper; Corrosion; Geochemistry; Ground water; Hydrochemistry; Lead; Metals; Monitoring; Phosphates; Public awareness; Solutes; Water quality; Water treatment; Minnesota; United States
Record ID:1999013778
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
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