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With increased levels of environmental pollution,
access to clean water is hampered all over the world. As typical
laboratory experiments and official water quality tests take
considerable amount of time to obtain results, demand for real
time monitoring of pH value in household water is ever
increasing. This paper presents a technique implemented based
on wireless sensor networks and mobile technologies to measure
pH value in water in a domestic environment in real time. The
proposed system facilitates storing of monitored records that
can be viewed graphically on a mobile phone. Real time
measurements taken using three water samples indicate that the
system performed with a high accuracy and low transmission
delays between the sensor node and the mobile device. The
system can be readily implemented as a low cost consumer
device that can be used even by non-technica| persons.
