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Wareham Water District
Tier 1 Notice
08/10/2012
The District has met with the DEP and our engineering firm SEA.~ We will keep Well #1 off-line, continue chlorinating at 0.3 ppm, and take routine samples.~ Long term, the District will develop a corrective action plan to achieve “4-log” removal to include continuous monitoring of chlorine residual.~ The last item will take 6 to 12 months for application, design, and installation.~ The estimated cost of the “4-log” response is approximately $100,000.~ The source of the e-coli is suspected to be surface water infiltration due to storm water runoff into the Maple Springs Brook.~ ~~The DEP will continue the Tier 1 Notice in effect until the situation is resolved.~ ~~It is important to point out the District’s practice of utilizing “seasonal” chlorination~prevented the contamination from entering the distribution system and avoided a boil
water order.~
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