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Cidra Groundwater Contamination Site
Cidra, PR

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Brenda Reyes - (787) 977-5869 
reyes.brenda@epa.gov

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Record of Decision [PDF 13.6 M, 329 pp]

Proposed Plan [PDF 4.9 M, 37 pp]

EPA added the Cidra Groundwater Contamination Site in Cidra, Puerto Rico to the Superfund National Priorities List on July 22, 2004 because potentially harmful chemicals were found in the ground water. The superfund site consists of portions of the commercial district of the Cidra Municipality and includes the Cidra Industrial Park to the southeast.  Approximately 874 people were served before the four contaminated wells were closed.  There are 15 active drinking water wells located within four miles of the site, serving a total population of 8,838 people.  The Cidra Groundwater Contamination site consists of a ground water plume with no identified sources of contamination of volatile organics compounds (VOCs). The Puerto Rico Department of Health (PRDOH) ordered four public supply wells operated by the Puerto Rico Aqueduct and Sewer Authority (PRASA) to be closed. Samples taken from on-site wells proved that they were contaminated with VOCs.

In June 2002, EPA collected ground water samples from the closed municipal supply wells and 20 other active and inactive wells in Cidra.  Investigations were made from various industrial sites as potential sources of contamination for the ground water plume.  In June 2003 and early 2004, EPA conducted an Expanded Site Inspection to determine the magnitude and extent of contamination and to identify potential responsible parties.  An investigation to determine the magnitude and extent of the contamination and to identify the source of the contamination was initiated in 2007.     


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