– BGWSD press release
The Colorado Department of Public Health & Environment (CDPHE) has approved the Baca Grande Water & Sanitation District’s plan and design for the implementation of soda ash as a water treatment process to replace the use of the orthopolyphosphate (OPP), Seaquest. The District received approval on Friday, August 31.
With this change, the District’s approach to corrosion control changes from inhibiting corrosion by forming a protective film on metal surfaces (OPP) to adding alkalinity (soda ash) to raise the pH, creating non-corrosive water. Corrosion control is required by the CDPHE because, although the quality of the District’s well water is excellent, without treatment, it is mildly corrosive.
Concurrently, the District is implementing a corrosion control study, also required by CDPHE, to determine the “optimal” treatment approach. Because of community concerns about the health aspects of the addition of OPP, the District requested and the CDPHE approved the change to soda ash before the completion of the full corrosion control study.
To implement the soda ash treatment the District will install a mixing tank, access platform, some piping, valves, a mixer, and controls. Materials needed to construct the improvements have been ordered and the District is proceeding with the installation as quickly as possible. If everything goes according to plan, the District will be ready to begin the actual treatment process by September 17th.