Northern Filter Media, Inc. is the leading US manufacturer of filter sand for the potable water, waste-water and pool industries since 1914.
Northern’s Filter Sand was formed from a natural glacial deposit formed millions of years ago along the Mississippi River Valley. Northern Filter Sand resource is comprised of over 450 acres of sand and gravel to a depth of 110 feet. Once dredged, all of our filter sand is processed through our state of the art hydraulic classification plant for cleaning (triple washed) and pre-sizing. Then it is dried and sized to your specifications by sending it over a series of high frequency vibrating screens with effective sizes and uniformity coefficients guaranteed.
High quality filter sand requires the proper angularity, hardness, spherecity and size. Northern’s Filter Sand meets or exceeds all of these requirements which makes our filter sand the perfect filter media for all applications. NFM Filter Sand improves efficiency by reducing retention time and head pressure loss with greater flow rates. Ongoing quality control testing starting with the production process through to shipment ensures our media meets your specifications for uniformity coefficient and effective size.
Packaging is available in bulk, 50lb bags, 100lb bags, 3000lb super sacks or 4000lb super sacks shipped via truck, rail or river barge.
Northern’s Filter Sand is AWWA B100-09 approved and certified under NSF (ANSI) Standard 61.
- Northern Filter Sand is graded specifically for water filtration plants
- Filter Sand can be used in municipal, industrial or residential applications
- The angular shape of the uncrushed filter sand promotes good flow and even distribution
- Color: light tan
- Bulk Density: 100 lbs./cu. ft.
- Specific Gravity: 2.65+
- Effective Size: .25 – 2.5 mm
- Uniformity Coefficient: 1.3 – 1.7
- Hardness: 7.0 (Mohs scale)
- Bed depth: 12 – 36 in.
- Freeboard: 40% of bed depth (min.)
- Service flow rate: 2 – 5 gpm/sq. ft.
- Backwash flow rate: 15 – 20 gpm/sq. ft.
- Backwash expansion rate: 35% of bed depth