No, water will not leach the lead from lead glass.
The lead will leach into the water and give you lead poisoning.
Lead crystal will leach a small amount of lead into foods placed in the container. For short durations, such as serving, they are safe. However, lead crystal is unsuitable for long term storage, or for use by pregnant women or small children due to lead poisoning concerns.
Because lead is hugely toxic, and can leach into the water, thereby poisoning whoever drinks it.
The mineral is lead.
On supply lines, lead can leach into the water system and add unwanted lead to your drinking/cooking. There are lead free solders that work very well.
lead is a solid and is unlikely to break down in dirt and go into the water unless directly exposed to the body of water, even so it would take a lot of lead to make a meaningful content in the water.
RY Crystal is Known to be a very fine "Lead Crystal" it is 30% lead which makes it a "Lead crystal" under the European crystal standards. Lead in a crystal means the amount of light it reflects, anything above 28% lead is considered as high quality. RY Crystal is a merging European crystal best known for their dazzaling shine on the Famous RY Crystal Chandeliers.
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The inclusion of at least 24% lead oxide in the composition is required by law for crystal to be called full lead crystal. The lead lends brilliance and weight to the product. Crystal without lead is still crystal, i.e. clear glass, however, it is more commonly perceived as &quotglass". The lead also make the crystal softer and more conducive to cutting. This is why the lead crystal is cut and for the most part, the unleaded crystal is not cut.
If a decanter is lead crystal, there should be a mark on the bottom of the item. You can read more about lead crystal at http://www.wisegeek.com/what-is-lead-crystal.htm.
Lead nitrate has no color. It's a whitish crystal; in solution it looks just like water.