ABSTRACT
Objectives: to evaluate the efficiency of a water treatment plant using a slow
sand filter as a mean of disinfection in the native community of Chunchiwi-Lamas
San Martín Region, under controlled conditions and in terms of comparison of
pH, turbidity, total coliforms, thermotolerant coliforms and Escherichia coli.
Method: the micro plant was designed and built for a supply of 600 liters / day of
tap water. The system was operated during four months, performing five
samplings of both, incoming water (tap water) and outgoing water (treated water)
on a periodic basis. The results obtained from physicochemical and
bacteriological indicators were evaluated and compared with the values required
in the ECA as established in the D.S. No. 002-2015.MINAM. and D.S. Nº 0312010-SA of the Ministry of Health.
Results: in relation to treated water, turbidity had an average value of 7.44; the
pH an average value of 7,406, the total coliforms of 494.02; the thermotolerant
coliforms was 6.54 and for escherichia coli the average value was 3.62.
compared to the values required by ECAS, an efficiency, of 68.5% for total
coliform, was obtained; 69.2% for tolerant coliforms and 90.03% for Escherichia
coli.
Conclusions: the water system used was adequate for water treatment at rural
level according to the regulations of Peru. The directly benefited population is 30
inhabitants between students and teachers of the school in the community, which
has approximately 400 inhabitants.
keywords: tap water, escherichia coli, water turbidity, affluent, effluent.
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