The federal government has developed guidelines to establish safe levels of various pollutants that may be found in drinking water. The list is a good guidance document. But it does not mean that well water with contaminant levels under those identified as dangerous by the government is water that should be considered to be acceptable. First, there is some controversy over the accuracy of these limits. This is illustrated by the fact that some states have limits that are more stringent than federal limits.
Some states have funds set up to assist home owners with bad well water.
In such cases, the buyer and seller need to determine who will apply for such funds, and who will benefit from the proceeds if the application is successful. Again, competent professional guidance is required to evaluate these considerations. Where funds are available, there might be strictly enforced time limits by which applications need to be made. Don't Buy an Expensive Problem Even polluted wells can be fixed. Filters and more costly treatment devises are available and can often address this problem.