Truck drivers and other highway professionals should be alert for suspicious activity around water treatment and storage facilities, according to a bulletin issued from Highway Watch, a security program administered by the American Trucking Associations (ATA).
ATA said the alert follows several reports of contaminated water storage tanks in Washington and Idaho.
In different incidents during September and October, authorities discovered evidence of tampering at three water towers and a reservoir. Three of the facilities tested positive for elevated levels of the bacteria Escherichia coli (E coli) that impacted residents in those water districts.
More recently, elevated levels of E coli were discovered at a reservoir in Washington although no signs of tampering were found.
Persons with information about these or other incidents are encouraged to call 703-838-1999 or email [email protected].