TEST RESULTS COSTA RICA 2017

INSTITUTO COSTARRICENSE OF ACUEDUCTES AND ALCANTARILLADOS
San José, Costa Rica
Section 1097-1200. Phone 2279-6144- dmora@aya.go.cr

Certification PRE-LNA-2017-01160

By presenting the National Water Laboratory, it certifies that the Filter installed in the ASADA of Homeless Higuito and known as BIO SAND BAG FILTER, has met to satisfaction based on the analysis carried out on 21-62017.

It should be noted that the analysis performed was of the Microbiological type and was performed at the entrance of the filter and at the output of the filter, in the Ramal San Gerardo of the Aqueduct of Homeless Higuitus.

The results were as follows (attached):

Filter entry23 Fecal Coliforms * 100 ml- 23 E coli 44 5 o c NMP NEGATIVE filter output for C.F. and E coli

The filter has the advantage that it is Portable, which could eventually be installed in scattered communities and precarious settlements.

It is not omitted to manifest that after the filter output, some method of disinfection should be used.