B Hope Hauptman

UC Merced

“Using point-of-use filters and almond biochar to reduce 1,2,3-TCP contamination in drinking water”

1,2,3-Tricholoropropane (TCP) is an impurity common in nematicides applied to agricultural soils from the 1940s to the 1980s. Evidence from animal studies indicates that TCP is a probable human carcinogen. TCP leaches through the soil into groundwater where it persists and contaminates thousands of wells in Asia, Europe and North America. In California, TCP contaminates drinking water wells, with the highest levels of TCP beneath agricultural land used to grow grapevines. Our study tests the efficiency of almond shell biochar to remove TCP and examined the removal efficiency of point-of-use pitcher filters to reduce TCP levels in tap water. Our results could be used to assist households and communities that rely on groundwater to identify low-cost treatment technologies at the well and in the household.


1,2,3-Tricholoropropane (TCP) contaminates drinking water wells beneath land used for agriculture. To address the lack of data on using Point-of-Use TCP contamination, our research uses Pitcher point of use filters and almond shell biochar to reduce TCP levels in groundwater.

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