Thanks guys for the feedback but my water report from Texas A&M says Total Dissolved Salts(TDS) = 5000 ppm. My conductivity says 5450 umhos/cm. No where does this report say salinity and that is what confuses me. The term salinity in ppm is often used to describe fresh,brackish, and salt water. What is that number relative to the 2 I previously stated. Is there a correlation? On my Ectech meter it does calculate salinity which is constantly coming in at around 3000ppm. The TDS it gives is also around 5000 ppm and conductivity is 5400 umhos so there is correlation with the sample report. So really my question is can I take the A&M water report and calculate salinity so I can compare it with the Ectech meter? - Thanks