Investigate Midwest (https://investigatemidwest.org/tag/fishing/)
Costco will control the production process from farm to store, making key decisions down to the grain chickens eat and the type of eggs hatched. Costco has even put its socially-conscious corporate reputation on the line.
The rainbow trout released into Prairie Lakes were fine to eat because they came from a hatchery. But trying to distinguish what fish to eat from one Midwest state to the next can be difficult, an IowaWatch/Cedar Falls Tiger Hi-Line investigation showed.
That’s because rules guiding what’s safe to eat vary in each state. Also, despite fish sampling by the states, knowing where to fish is hard because fish from only a few waterways where people fish are tested each year, the investigation showed. Anglers at farm ponds are on their own when it comes to the health of the fish they catch because the state’s natural resources department (DNR) does not sample fish in private water bodies for contamination.