Applications include landscape irrigation, drinking water cistern, rainwater harvesting, storm water retention, sewage, water storage for low yielding wells and many others. Large piping is accommodated by generous fitting flats along with lifting lugs for easy transport and tank installation.

The largest capacity below ground storage and holding tanks are made by Norwesco. In addition to the typical use for storing water – both potable and non-potable – these tanks are also used as large capacity septic tanks. The robust tank design accepts up to 4″ plumbing options. The tank’s integral columns provide excellent structural strength.

Part # Gallon Capacity Specs Width Overall Height Length Tank Availability Location*
42559 2000 VV 98” 51” 126” H
44593 2000 WW 98” 51” 126″ B,C,E
44079 2500 WW 99” 51” 159” B,E,L
43770 2600 WW 99” 51” 155” B
43771 2650* WW 99” 81” 155” B
44390 3525 WW 102” 51” 211” B,L,T
44876 5025 WW 102” 73” 211” B,F,T
44877 5025* WW 102” 96” 211” B,F,T
Part # Description
62408 20” Lid w/gasket for 2000 (42559)
63672 20” Lid for 2000 (44593), 2500, 2600, 2650, 3525 or 5025 gallon tank
63514 Manhole extension (6”H x 20”D) for 2000 (42559)
62397 Manhole extension (15”H x 20”D) for 2000 (42559)
62396 Manhole extension (24”H x 20”D) for 2000 (42559)
63832 Manhole extension (6”H x 20”D) for 2000 (44593), 2500, 2600, 2650, 3525 or 5025
63833 Manhole extension (15”H x 20”D) for 2000 (44593), 2500, 2600, 2650, 3525 or 5025
63834 Manhole extension (24”H x 20”D) for 2000 (44593), 2500, 2600, 2650, 3525 or 5025

*Tank includes molded on manhole extension

Tank Availability Location Key: B=St. Bonifacius, MN; C=Lancaster, OH; D=Griffin, GA; E=Shawnee, OK; F=Tooele, UT; G=Owego, NY; H=Washougal, WA; I=Sheldon, IA; J=Washington Court House, OH; L=Hanford, CA; P=Petersburg, TX, T=Fairfield, TX; X=Albertville, AL