From the Sterling Journal Advocate (Judy Debus):
In September 2008, an enforcement order was issued by the Colorado Department of Public Health and Environment (CDPHE). The order identified specific tasks the city would have to perform within a specified compliance schedule and identified civil and criminal penalties for non-compliance. Sterling is the largest system of 32 communities across the state to receive the high uranium and TTHM’s rating. After looking at various technology for primary (the uranium, TTHM’s and nitrate) and secondary standards (total dissolved solids, sulfate, manganese and hardness ) treatment, a reverse osmosis (RO) with blend stream filtration was the selected method to mitigate the problems. Demis noted that the selection removes those primary and secondary contaminants, is the lowest overall water cost impact to the average Sterling citizen and provides the best overall water quality.
To dispose of the concentrates that are filtered out, a deep well injection system was selected. The well injection is approximately 7,000 feet deep, is permitted through EPA Region 8 and is the least costly alternative, Demis said…
Noticeable changes will be in taste (less salty), less gastro-intestinal discomfort for visitors, less metallic taste, and a reduction in hardness, lessening the need for in-home softening.
Hatch Mott MacDonald Company is the architect/engineer of the project and contractor is Hydro Construction Company.
More water treatment coverage here.