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.
Know who calculates the cost basis. The cost basis is calculated by your stockbroker or mutual fund company for stocks purchased after 2011 or mutual funds purchased after 2012. If you invest without a stock broker, you will need to calculate the cost basis of your assets yourself in order to do your taxes.