::Water Biofiltration ::
ARE YOU LOOKING FOR A
SUPERIOR AND ECONOMICAL
CHOICE FOR YOUR
FILTRATION PROJECT
VERSUS DOUBLE
WASHED
PRODUCTS?
Look no further than Clearlake Lava for the answers to your filtration
needs.  Our specialty bio-system permeable aggregate has been used
for decades in septic systems, swales,
retention basins and is the
preferred choice for such areas as Napa County.  Our fill sand, simply
a crushed drain rock, can be and has been used in these applications
and has all the superior qualities of the bio-system permeable
aggregate .  

Due to its naturally clean matrix, our specialty bio-system permeable
aggregate imparts no dirt into the filter.  All organic particles,dirt and
clay were burned out millions of years ago by the kiln action of the
volcano.  Thus, the PI of our naturally occurring drain rock is “0.”  No
need for expensive washing or careful attention to minus 200
components to filter out clays and organics which simply do not exist in
our product. Any fine components of the material are non plastic in
nature, simply a smaller rock component.