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Nitrate Reducing Granular Media


Our new GreenStory GSGWF Nitrate Media is unlike anything currently on the market.  This media is specifically developed for selective nitrate removal from potable water in the presence of high levels of sulfate.  Media is NSF/ANSI 53 certified to reduce nitrates to below the USA EPA enforceable regulation level of 10 mg/L.  This media is available for use in residential drinking water and large municipal drinking water treatment systems.


  • NSF/ANSI 53 certified in reducing Nitrates/Nitrogen (as N) from 30 mg/L to 10 mg/L

  • Residential solutions:

  • Media can be installed in softener equipment

  • Single-use cartridges ideal for residents on a septic system

  • Municipal solutions:

  • Media designed to be installed in large media tanks


  • Nitrates/Nitrogen


  • Media provided in Sodium form (Na+)

  • Media size: 16-50 (US mesh)

  • Media density: 43.7 pounds/ft3

  • Nitrate/Nitrogen total capacity: 22.65 eq/ft3

  • Uniformity Coefficient: 1.6 max

  • Media form: macroporous, milky white, spherical beads

Operating Parameters:

  • Media regenerate: Sodium Chloride

  • Recommended flow rate: 8-9 gpm/ft2

  • Backwash flow rate: 4-4.5 gpm/ft2 at 77 ⁰F (25 ⁰C)

  • Backwash Freeboard: 50%

  • Backwash expansion: 50-75%

  • Bed depth > 29.5” / 750 mm

  • Max operating temperature: 212⁰F / 100⁰C

  • Operating pH range: 0-14

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GreenStory Global Filtration Made in the USA
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