I live on water front .The water has been clear as a pool . I want to use it to water my lawn . I want to know what the highest salt content is safe for my lawn . I have a friend in Delaware on the Nanticoke river who does this so I know it is possible .
The State owns the water and you cannot use a public body of water such as a creek, stream, or river to water your lawn. You will have to check with DNR regarding this.
If the water is used, you will have salinity issues. We do not have information on salt content. In general bermudagrass or zoysia may be able to tolerate some salinity but not tall fescue.