ISSN: 1659-2751



Management of Bio-Indicators of Water Quality in Rural Communities


The management of bioindicators of water quality in rural communities emphasizes the importance of enabling organized groups to evaluate the quality of water resources through apprenticeship and execution of sampling methods of macro-invertebrates (biomonitoring), that can be complemented with an evaluation of physico-chemical analysis properties (pH, COD, BOD, T, OD) of the aquatic environment. With the help, organization, interest, and participation of students of Las Mercedes School and Guácimo High School, samples were taken from rivers using the biomonitoring BMWP’-CR index (Biological Monitoring Working Party, modified for Costa Rica) to determine the water quality of the communities of Pocora and Guácimo. The results indicated that the Las Mercedes Creek and theGuácimoRiverpresented moderate levels of water quality (moderate contamination) whereas the Dos Novillos River and the Guácimo High School Creek presented poor to moderate levels of water quality (polluted to moderate contamination). During the implementation and practice of the biomonitoring scheme the school children developed an environmental conscience and, organizational abilities, and incorporated the technique in the community’s water resources evaluation process. The most commonly collected macroinvertebrates belonged to the following orders: Trichoptera, Coleoptera, Ephemeroptera, Odonata, Plecoptera and Hemiptera.

Key words: biomonitoring, bioindicators, river pollution, macro-invertebrates.

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