Determining water quality

Created at: 2019-08-14 13:54:02


The importance of checking drinking water quality

The Public Health Regulations 2013 - The Sanitary Quality of Drinking Water and Drinking Water Facilities determining the sanitary quality of drinking water are intended primarily to ensure the health of the water consumers, who use the water for drinking, cooking and washing as well as for other domestic uses.

The regulations form a binding, professional and advanced foundation for the delivery of safe drinking water in Israel.

The standards regarding drinking water in Israel are mostly compatible with the strict standards of the European Union, the US Environmental Protection Agency (USEPA) as well as with the guidelines of the World Health Organization (WHO).

The new regulations include tests for over 150 components (microbial, an organic, volatile organic micro pollutants, pesticides, chemical substances with organoplastic effect, radioactive substances and others).

 

Tap water is safe and drinkable in Israel, except at The Dead Sea. There, even some luxury hotels have special taps on each floor that you must go to for drinking water. Although Israeli water is safe, the presence of various minerals in the water may make you a bit queasy. For this reason, bottled water could be a good investment, though in small amounts and for teeth brushing, local water is fine.

In Jordan and Egypt (Sinai), tap water is not drinkable. Bottled water is essential.

However, in china- even in the big cities like Beijing, the water itself might be free of contaminants but the plumbing in the city is old and therefore drinking the tap water is not safe, or using tap water for brushing your teeth.

 

Portable device – market research & solution

There are existing sensors suitable for testing most components in water- the best one we could find is the “Xiaomi Water Quality TDS Detection Pen “

     

It is relatively cheap (₪37) and portable.

It reacts to organic compounds, heavy metals and soluble salt content.  It has relatively low power consumption and highly precise results.

The same system can be integrated into water bottles or reusable cups.

The sensors used may be:

Biosensors for determination of Heavy metals in waters- sensors are suitable direct an continuous monitoring by measuring certain analytes that can affect the quality and safety of water. Biosensors use both chemical and physical sensing techniques (source). The process sensors allow is described in the picture below. 

 

 

Our idea already exists as a concept and product, therefore it is not innovative. However, there is a good core idea that regards using sensors in a mobile way.  The images are self explainatory or are accompanied by an explaination. However, it requires further design adjustments. 

Our device is meant to be used by travellers or people who live in areas with problematic water sources.