September 18th, 2013 (InsideCostaRica.com) A new report by the Comptroller General of the Republic (CGR) indicates that 370 community-operated water systems in the country are contaminated with microbiological and other elements in excess of allowed limits.
The findings were made during an investigation by the National Water Laboratory, part of the Costa Rican Institute of Aqueducts and Sewers (AyA), conducted in 2012, but analyzed and released by the Comptroller only recently. The new revelations are in addition to the arsenic contamination in some 24 communities.
In addition to other areas, contamination was found to be present in the Greater Metropolitan Area (GAM) and the Central Pacific.
In addition to excessive microbiological contamination, reports indicate contamination by agrochemicals, grey water, excessive amounts of iron and calcium, and hydrocarbons.
According to reports, the problem is in large part due to insufficient water treatment.
As many as 1,350 systems are not chlorinated at all. Those that do treat their water and were visited by the Comptroller General said they have never received the advice of AyA in regards to proper dosage or treatment methods. Operators who do chlorinate their supplies use a number of varying methods, from chlorination pills, sodium chloride and liquid chlorine.
AyA has not responded to the Comptroller’s report.