May be associated with the presence of sodium in drinking water when present in high concentrations. Often from saltwater intrusion, mineral dissolution, industrial and domestic waste. Deteriorates plumbing, water heaters, and municipal water-works equipment at high levels.
Cost basis is the original price paid for shares of a security plus or minus certain adjustments required by applicable tax rules such as adjustments with respect to reinvested distributions and sales charges.
Cost basis is usually used to determine capital gains (or losses). To calculate capital gain, subtract the cost basis from the asset sales price. For example, if you sell 100 shares of XYZ for $1500 and want to calculate the capital gains, subtract the cost basis ($1000) to get a capital gain of $500.