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Hillsborough won't increase accepted lead levels in wastewater but arsenic limits remain undecided

Hillsborough County won't allow industrial companies to dump more lead into its wastewater system after all.

As for arsenic, that's still up for debate.

County commissioners voted unanimously on Wednesday to keep at existing levels the allowable concentrations of toxic materials in wastewater from industrial facilities, backing away from a proposal to raise the threshold for nine chemicals, including lead.

But the county delayed a decision on what to do about arsenic after a company said it has trouble meeting the existing limit of 0.25 milligrams per liter.

The company, Progressive Waste Solutions, which operates the Sun Country Landfill in Wimauma, has at times exceeded the current allowable levels of arsenic in wastewater tests, according to a recent county review of the results.