If you have compared your water analysis to the guidelines in Table 1 and discovered an EC problem, you should take comfort that you are not alone. High salt content is a relatively common problem. The total amount of dissolved salts in a water supply constitutes its salinity. The cells of plant roots absorb water as a result of the differences in osmotic pressure between the cell contents and the surrounding soil water. Whenever salinity of the soil solution is near to or greater than that of the cell contents, plants are unable to take up sufficient water for growth and other processes.
Mature plants can tolerate higher salts than young plants.
Limonium perezii , to name a few. When evaluating salinity, it is important to note the dominant anion in the water. For water with bicarbonate as its principal anion, the salinity hazard is much lower than if the principal anion were chloride. The irrigation water constituents of greatest concern to growers of ornamental species are chloride, boron, and sodium. High sodium and bicarbonate are the two I have come across most often, to date.