By Jessica Frank-Keyes Bosses of water companies who obstruct watchdog investigations could face up to two years behind bars, as the government unveils tough new laws to ramp up enforcement. The Water (Special Measures) Bill was introduced in Parliament on Wednesday and will grant sweeping new powers to the Environment Agency (EA), the Drinking Water Inspectorate and Ofwat to take action against rogue firms polluting waterways. Tougher punishments for law-breaking will be established, including up to 24-month prison sentences for top executives who fail to cooperate with regulatory investigati…