South Blount County Utility District (SBCUD) has an exceptionally pure raw water supply from Tellico Lake, with very low levels of natural alkalinity (6 mg/L – 8 mg/L). The raw water turbidity is typically less than 1 NTU, allowing direct membrane filtration without sedimentation. Ultimately, this low-alkalinity supply resulted in a tendency of the 8-MGD membrane filtration treatment plant?s finished water to be corrosive, as exhibited by an unstable pH in the distribution system. To comply with the EPA Lead and Copper Rule, SBCUD needed to buffer the system pH and reduce the effects of lead leaching in the system.
This presentation is available to AMTA Members only.
- Rebecca Clay, PE / Henry Durant
- JACOBS / South Blount County Utility District
- AWWA/AMTA Membrane Technology Conference, Glendale, AZ
- AWWA/AMTA Membrane Technology Conference
- pH, South Blount, Experience