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Notice of Standard Maxium Contaminant Level (MCL)
Important Information About Your Drinking Water
March 1, 2018

Steps we are taking to reduce Total Trihalomethanes (TTHMs):

The New Castle Water District receives its water from the Portsmouth Water Division. Portsmouth continues to proactively address the evolving water quality regulations related to new, lower, standards for TTHMs. The Portsmouth 2013 Water System Master Plan recommended aeration of the Newington Booster Tank to treat for this parameter. Therefore, a consultant was hired by the City in 2014 to perform preliminary design of that system and to also assist the water operations staff with optimizing treatment system operations to lower the levels of TTHMs. Their recommendations were implemented and a design of the Newington Booster upgrades is underway and went out to bid on January 19, 2018. This pumping station is designed to reduce the TTHMs. The Town of New Castle has also hired an engineering firm that made recommendations to mitigate these issues.

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