Dozens of N.H. Water Systems May Need New Arsenic Treatment Under Lower Limit
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Posted on 10/24/2019 by
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As the state works toward sharply lowering its limit on arsenic in drinking water by mid-2021, recent testing data shows dozens of public water systems will likely be out of compliance with that new standard.

New Hampshire is only the second state, after New Jersey, where lawmakers have approved a lower arsenic standard of 5 parts per billion. That’s half of the current federal default of 10 ppb.

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