BALTIMORE (AP) — More sewage has spilled into the Patapsco River, which saw 100 million gallons of raw sewage spill after Hurricane Irene.

The most recent spill occurred early Saturday when a joint failed in pipes that had been installed after Irene. Some 525,000 gallons of sewage spilled from a 54-inch concrete pipe into the lower Patapsco.

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The Baltimore Sun reports that Baltimore County spent $500,000 to replace aging pipes earlier this month after a main conduit ruptured after the hurricane.

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County officials have posted signs along the river saying the water is unsafe to swim or wade in, or even touch.

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