which glass contains lead in it? Crystal glass has lead in it.

more about types of glass here:

http://www.britglass.org.uk/AboutGlass/TypesofGlass.html

No, water will not leach the lead from lead glass.

glass

Some glass has lead in it, specifically crystal glass. The lead acts as a flux in glass, allowing the grains of silica sand to be melted at a lower temperature. Glasses are generally denoted by their flux, so you get soda glass, flint glass, borosilicate glass, lead crystal etc.

Lead also lends crystal the attribute of a high refractive index, making it a very clear glass and also soft. It can be easily cut with designs and polished. George Ravenscroft developed the first viable lead glass.

Lead glass is made with lead oxide PbO this makes it dense. It also has a higher refractive index than ordinary glass. It is sometimes called "lead crystal glass" and has been used to make cut glass ornaments and decanters. There is a lead poisoning risk from drinking wine that has been stored for long periods in lead crystal decanters.