A new Missouri DNR report notes shortcomings in the monitoring and treatment of Hannibal’s drinking water.

The information is found in a Hannibal Board of Public Works notice issued July 7th.   It says the Missouri DNR discovered in April that UV dosage numbers were not reported correctly.  Although the Hannibal BPW installed ultraviolet light (UV) reactors for Cryptosporidium inactivation, the system failed to properly monitor and record UV levels from October 1, 2015 to present.

Deficiencies were also noted in the treatment process used to remove certain bacteria and viruses, since converting to the disinfectant chloramines.

In addition, the system failed on May 20th and 21st to maintain the required disinfectant residual required at the system entrance.

BPW officials say there was no immediate danger--the violations do not constitute an emergency.  However,  people with compromised immune systems, infants, or the elderly should seek medical advice.

The report says corrective action has been taken--a defective chemical pump has been replaced, and UV calibration and reporting is now in compliance.

The full report can be viewed at the Hannibal BPW website http://www.hannibalbpw.org/news/2016/08/07/public-notice/ or their facebook page.