Sensex Today | Stock Market LIVE Updates: Water purifier maker Eureka Forbes (EFL) is set to benefit from a strong unmet need for clean water among Indian consumers, low industry penetration and ownership change in the company, Kotak Institutional Equities said in a note. The DCF-based fair value of the stock is Rs 670 which is valued at 55X 1-year P/FCF, Kotak said.