If you used this tool in the past, it is possible we have a copy of your previous data and information and if you create an account using an email address you may be surprised to find your historic data entry. Restructuring the tool for teaching applications. Adding Country and Zip Code (Note: This tool is used in at least 50 countries). Providing the ability to georeference a site, i.e, a mapping feature with GPS location. We added a few elements to the original tool, such as:ġ. We hope that you find our version of the surface water quality tool helpful. We have modified the equation to calculate weighted values if all the data are not entered. The “Q value” for each parameter you enter is then multiplied by a weighting factor to attempt to account for the role or influence of the individual parameters. After you enter the data, it is used to calculate a “Q” value for each parameter.
For this process to work, we strongly suggest reviewing this information sheet regarding the data requirements and how the process assumes you are entering the data. This calculator is based on the original WQI Calculator that was developed through a consensus method in the 1970s by the National Sanitation Foundation ( NSF). The Know Your H20™ Water Quality Index Calculator for Surface Water Stream Assessments, Biological Monitoring, Remote Data Logging
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