What happens if I use my Black Berkey™ Purification Elements after 3,000 gallons?

We determine the typical lifespan of the Black Berkey™ Purification Elements by their ability to reduce heavy metals. The breakthrough of heavy minerals can occur at about 3,000 gallons. Heavy metals can leach through beyond 3,000 gallons. However, the elements can be used  beyond that point because other reductions continue well beyond 3,000 gallons.