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Septic and wastewater pumps, built for the trade.

Effluent, sewage, grinder and sump pumps, float switches and control panels.

ATER SK-20 effluent pump

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Featured pump

SK-20 Mid-Suction Effluent Pump

1/2 HP multi-stage pump with a 304 stainless steel shell and built-in check valve. CSA certified.

Rated
20 GPM @ 113 ft
Max head
155 ft
Warranty
2 years
0501001500102030Flow (GPM)Total head (ft)Rated: 20 GPM at 113 ft

Popular products

Municipal and commercial pumps

Submersible solids handling from 1/2 to 150 HP, plus sewage, grinder, dewatering and process pumps for lift stations, treatment plants and commercial sites.

AP-series solids handling pump
Pump type
Horsepower
Series
Submersible solids handling
0.5 – 150 HP
AP2V, AP3, AP4, AP6, AP8, AP12
Explosion-proof solids handling
75 HP
AP6HSHX
Stainless vortex sewage
5 – 10 HP
AP3SV, AP3VSE, AP4VS
Sewage with cutter
3 – 10 HP
AP4HC
Devour grinder
3 – 7.5 HP
AP2VG, AP2HG
Dewatering
0.5 – 2 HP
AP2D
Effluent / sump utility
0.5 – 1 HP
AP2VSE
Vertical multistage centrifugal
3 HP
AMPV

Distributors, Wholesalers and OEMs

Stock ATER at your branch or build it into your systems. Every partner gets consistent supply, full technical data and warranty service from the manufacturer.

  • Volume pricing on pumps, floats and panels
  • Data sheets and pump curves for your catalog
  • Warranty claims handled by ATER

Warranty

Float switches
5 years
Cast iron pumps
3 years
High-head pumps and alarms
2 years

From the original date of purchase. Read the full terms

ATER Pump Suite

Cross-reference a pump, design a septic system, price a panel or lift station and file a warranty claim, all with one login.

For distributors, wholesalers, OEMs and specifying engineers. Works in any browser on desktop, tablet or phone.

  • Pump IQ

    Match another brand’s pump to the right ATER replacement and compare models side by side.

  • Cross-Reference SheetsDistributors

    Turn another brand’s pump line into an ATER replacement guide with your name and prices on it.

  • Sump IQ

    Size a sump pump and work out how long a battery backup keeps it running.

  • Design IQ

    Design mound and pressure systems: pump TDH, dosing, leach field and more.

  • Panel IQ

    Build a control panel package and get the list price.

  • Lift Station IQ

    Size and price a complete lift station package.

  • Warranty IQ

    File a warranty claim, get a reference number right away and track where it stands.

  • ATER University

    Free, self-paced classes on pumps, septic, wastewater and treatment systems.

The tools you see depend on your account.

Trade shows

ATER trade show booth
Virginia Onsite Wastewater Conference
Roanoke, Virginia · November 1–3, 2026
WOSSA Septic-Con
Washington · Jan 2027
TOWA Annual Conference
Waco, Texas · March 8–10, 2027
FOWA Convention and Trade Show
Florida · Aug 2027
OOWA Conference and Trade Show
Oklahoma · Sept 2027

ATER pumps are used by

Aeris Aerobics
Anua
AquaKlear
PolyPure Systems
Enviro-Flo
Lee's Precast Concrete
Desoto Concrete Products