Water quality analysis using an inexpensive device and a mobile phone

Timo Toivanen (Corresponding Author), Koponen Sampsa, Ville Kotovirta, Matthieu Molinier, Chengyuan Peng

    Research output: Contribution to journalArticle

    Abstract

    Background

    Water transparency is one indicator of water quality. High water transparency is an indication of clean water. A common method for measuring water transparency is Secchi depth. In this paper, we present an approach to water quality (Secchi depth and turbidity) monitoring using mobile phones and a small device designed for water quality measurements.

    Results

    The water quality parameters were analysed automatically from the images taken using mobile phone cameras. During the summer of 2012, we conducted a field trial in which 100 test users gathered 1,146 observations using the system. The results of the automatic Secchi3000 depth analysis were compared against reference measurements, and they indicate that our approach can be used for quantitative water quality measurements.

    Conclusions

    Results show that overall the system performs well. Both Secchi depth and turbidity are estimated with excellent or good accuracy when the measurements are taken with care.
    Original languageEnglish
    Number of pages6
    JournalEnvironmental Systems Research
    Volume2
    Issue number9
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • Mobile application
    • Participatory sensing
    • Secchi depth
    • Water quality

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