JACKSON, MISS. (AP) — Mississippi health officials told residents in the state’s capital to boil their tap water Thursday after traces of E. coli bacteria were found in the city’s supply — a result the manager of Jackson’s long-troubled water system disputed while calling it a devastating setback for rebuilding public trust.

The boil water notice, which officials also imposed in the Jackson suburb of Flowood, was issued just days before the expected arrival of a blast of cold weather that could further disrupt the local water infrastructure. The bacteria’s presence indicates that the water may be contaminated with human or animal waste, the state health department said.

Residents of the two Mississippi cities were advised to boil their water for one minute before using it. The precaution will last at least two full days as officials collect new samples for testing.

Ted Henifin, Jackson’s interim water manager, said at a news conference that state officials refused to validate the lab results before issuing the boil water notice, and suggested there may have been false positive tests. He also said it was unlikely that samples from Jackson and Flowood would be contaminated at the same time since the cities’ water systems are not connected.

Other news New chairman in Mississippi Senate will shape proposals to revive an initiative process Sentencing postponed again for Mississippi police officers who tortured two Black men Ancient human DNA hints at why multiple sclerosis affects so many northern Europeans today

“This is tragic,” Henifin said. “This is setting us back maybe a year. It’s taken everything we can do to get a few more people in this city to drink tap water and have trust in it.”

Officials at the state health department’s lab don’t believe there was any contamination of the samples, and the results are not false positives, the health department said in a news release after Henifin’s news conference.

A federal judge appointed Henifin in November 2022 to oversee reforms to Jackson’s water system after infrastructure breakdowns during the late summer of that year caused many city residents to go days and weeks without safe running water.

Rebuilding trust in the water system after years of dysfunction has been a central goal of Henifin’s tenure in Jackson, where many residents have grown accustomed to relying on bottled water during repeated boil water notices.

Henifin has focused on numerous improvement projects, such as fixing broken pipes and introducing a new proposal for how the city charges for water.

The boil water notices sent local officials scrambling to collect samples from 120 locations. Henifin said he expected the advisory might not be lifted until Monday, the same day temperatures in the area are expected to drop to frigid lows as an “arctic blast” moves across the state. Cold snaps in 2021 and 2022 caused frozen pipes and drops in water pressure across Jackson.

Henifin said he expected city leaders to be prepared for the extreme weather. But Thursday’s boil water notice could have far-reaching consequences, he said.

“We have made amazing progress, and to not have at least the benefit of a validation of the results really puts us back into that old school of Jackson fearing the drinking water,” Henifin said.

___

Michael Goldberg is a corps member for the Associated Press/Report for America Statehouse News Initiative. Report for America is a nonprofit national service program that places journalists in local newsrooms to report on undercovered issues. Follow him at @mikergoldberg.