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Rhode Island

Boil water notice lifted for Prudence Island Water District customers after permanent chlorination installed

The Rhode Island Department of Health said the notice, in place since Oct. 5, 2018, after E. coli was found in the water supply, can be removed now that the district's new chlorination system has run safely for two months.

The Rhode Island Department of Health has told the Prudence Island Water District that it can lift a boil water notice that had been in place for its customers since Oct. 5, 2018, the department said Tuesday.

The notice was issued after E. coli bacteria was found in the water supply, according to the health department. It is being lifted because the district installed and switched on a permanent chlorination treatment system.

The district first tried several fixes for coliform bacteria that kept turning up in its distribution system, but the problem persisted, the department said. State health officials then required the district to install permanent chlorination at all of its wells and to put cross connection control in place.

In 2021, the district agreed to install the chlorination systems but needed more time for cross connection control because of the COVID-19 pandemic and other challenges, according to the department. The health department required the notice to stay in place until the systems were installed and had operated safely for at least two months. With the department's approval, the systems were switched on Aug. 4.

The department said the work was delayed by its technical complexity and by changes in the project's funding sources during review, which affected the type of review, who was involved and the compliance requirements. The upgrades were ultimately paid for with a State Revolving Fund loan with 100% principal forgiveness, through a partnership between the Rhode Island Infrastructure Bank and the health department.

Since then, the systems have kept the minimum chlorine level at the treatment plants and throughout the distribution system for two consecutive months, and routine testing has found no total coliform or E. coli, the department said.

The department directed customers to the notice from their water district for further guidance.

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Rhode Island