MagisterCultuum
Great Sage
I've stopped eating all Fish other than those grown in Aquaculture. As bombshoo said, it strangely isn't that difficult to stop eating Fish...
Another thing you can do is stop drinking bottled water.
Bottled Water is 100% the same thing as tap water(it even says so on the bottle...), if anything, it's worse, because Bottled Water companies don't have as much restrictions in their product as the government does with their tap water. So basically you are paying a dollar fifty for an environmentally hazardous plastic bottle filled with tap water.
The whole idea that tap water is dirtier than Bottled Water is an extravagantly successful marketing campaign and 100% false...
When we used to buy bottled water we always went for the distilled stuff, which is not at all the same as tap water.
Tap water quality varies greatly from place to place. Where I live government restrictions make the water worse. We are lucky to have a water source that is pretty safe to drink before any sort of treatment, and unlucky to have a lot of old homes in the area that still use lead pipes. Government regulations apply to what is in the water at the tap rather than at the treatment plant. Due to a few older homes lead pipes, the plant is legally required to add a caustic solution so that everyone has hard water that can coat the old pipes and prevent lead from leaking out of them. I've had tap water when away on vacation that tastes much better than any bottled water I've tried, but can't stand the taste of the local tap water before filtering it.