Pools using chlorine to sanitize can also have a salty taste. The liquid chlorine you purchase at your local pool store is produced with salt through electrolysis. So, it will leave a salt content in your pool water.
Your pool water can have a salty taste from 4500+ppm of salt depending on how sensitive your taste is. The only way to remove salt from the pool is too drain and add fresh water. Use the pool salt calculator to factor how much water to drain.
Also, another factor that could cause salinity taste in the water could be the increase of Total Dissolved Solids (TDS). It is the total number of minerals, salts, metals and more that has dissolved in the water. If you taste salty water and the water is not clear and sparkly, then you need to check your TDS level. If you are using salt in your water for a chlorine generator, then you will need to subtract your salt level from the TDS level to get the actual TDS amount. Salt is considered a TDS.