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Middletown officials report fluoride overfeed at treatment plant; no elevated levels detected in distribution system
Summary
City water officials disclosed a Nov. 10 fluoride overfeed at the Lisonbee treatment plant caused by a decimal-entry error on the SCADA control system, said Commissioner Twill. Officials notified state and county health agencies and described immediate safeguards, including stopping fluoride feed and installing a smaller feed pump.
Middletown’s Department of Public Works disclosed a fluoride overfeed incident at the Lisonbee water treatment plant that occurred on Nov. 10 and was discovered in mid-December, the department told the Common Council.
"An operator inputted the wrong decimal point on the SCADA system, which caused the fluoride to overdose," Commissioner Twill said. He said the event involved chemical feed over a multi-hour period and that the chief operator did not receive an immediate report from the shift operator.
Twill said the city has conducted required testing and so far has "not detect[ed] any elevated level of fluoride into our distribution system," attributing that finding…
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