WILMINGTON, Del. (AP) — Public health officials in Delaware are warning some Sussex County residents about potential drinking water contamination.

The News Journal of Wilmington reports that residents served by Broadkiln Beach and PrimeHook water companies may have their drinking water contaminated by unsafe levels of E. coli bacteria.

Public health officials say people using those companies should either switch to bottled water or boil the water before using it.

The state's online drinking water monitoring system shows Broadkiln has 478 connections in Sussex County and PrimeHook has 170 connections.

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Information from: The News Journal of Wilmington, Del., http://www.delawareonline.com