
1) English-language opera 2) Fresh 3) Opera by Andy Vores 4) Water that is not salty
Found on
https://www.crosswordclues.com/clue/freshwater
[opera] Freshwater is a two-act chamber opera composed by Andy Vores, based on the 1929 comic play by Virginia Woolf. Vores received assistance in creating the opera from Quentin Bell, Woolf`s nephew and executor, who provided a rarely seen earlier version of the text that served as the inspiration for several passages of the libretto. Fres...
Found on
http://en.wikipedia.org/wiki/Freshwater_(opera)

water containing no significant amounts of salt; potable water suitable for all normal uses cf. potable water.
Found on
http://en.wikipedia.org/wiki/Glossary_of_environmental_science

The water of rivers and most stillwaters, containing little or no dissolved salt
Found on
http://english-fly-fishing-flies.s3-website-eu-west-1.amazonaws.com/glossar

A term referring to bodies of water that do not have salt.
Found on
http://www.azgfd.gov/h_f/fishing_glossary.shtml

(from the article `Woolf, Virginia`) ...nevertheless, Flush (1933) remains both a biographical satire and a lighthearted exploration of perception, in this case a dog`s. In 1935 Woolf ...
Found on
http://www.britannica.com/eb/a-z/f/62

town (parish), unitary district of Isle of Wight, historic county of Hampshire, England. It lies close to Alum Bay, notable for its many-coloured ...
Found on
http://www.britannica.com/eb/a-z/f/62

(from the article `aquarium`) ...oxygen and to avoid supersaturation with nitrogen. In recirculating systems, water treatment must not only ensure clarity of the water but also ... Freshwater ecosystems are divided into two major classesflowing (such as rivers and streams) and static (such as lakes and ponds). Although the ... ...
Found on
http://www.britannica.com/eb/a-z/f/62

Water that has no salt in it
Found on
http://www.encyclo.co.uk/local/21748

freshwater is a term used for waters such as rivers and lakes as opposed to saltwater (the sea)
Found on
http://www.fish-uk.com/dictionary.htm

water containing no significant amounts of salt; potable water suitable for all normal uses cf. potable water.
Found on
http://www.translationdirectory.com/glossaries/glossary306.php

Water with no salt content.
Found on
http://www.tropicalfishcentre.co.uk/Glossary.htm

[
adj] - relating to or living in or consisting of water that is not salty
Found on
http://www.webdictionary.co.uk/definition.php?query=freshwater

water that contains little to no salt
Found on
https://sciencetrek.org/sciencetrek/topics/water/glossary.cfm

describes a body of water such as rivers, lakes and streams.
Found on
https://www.encyclo.co.uk/local/22505
No exact match found.