Brackish water
"Water that is saltier than freshwater, but not as salty as seawater. The concentration of total dissolved salts in brackish water is usually in the range 1,000 to 10,000 mg/l." (United Nations Publications, 2013)
Sources
United Nations Publications. "Glossary of Shared Water Resources (English-Arabic): Technical, Socioeconomic and Legal Terminology." (2013). DOI:https://dx.doi.org/10.18356/70b462ce-en