Well & TapHome Water Treatment Database

Water treatment system finder

56 systems from 22 brands, each graded on certification evidence, 10-year cost, flow, warranty and returns. Filter by your water problem, then tick up to four systems to compare side by side.

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56 systems

System Grade Price 10-yr cost Flow Certified to
LUMINOR BLACKCOMB 5.1 LB5-101BUV disinfection A $897 $2,467 13 gpm NSF/ANSI 55 Class B (listed as LB5-10XB, X = plug type, 13 gpm), CSA B483.1 Check price
Rheem Preferred RHS32Water softener B $489 $1,365 7.9 gpm NSF/ANSI 44, NSF/ANSI 372, CSA B483.1 Check price
Aqua-Pure (formerly 3M Aqua-Pure, Solventum) AP904Whole-house cartridge system B $432 $3,742 20 gpm NSF/ANSI 42 Check price
AquaTru Carafe (AT100 series)Countertop reverse osmosis B $375 $1,993 - NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401, NSF/ANSI 372 Check price
Waterdrop G3P800 (WD-G3P800-W)Under-sink reverse osmosis B $999 $2,549 - NSF/ANSI 58, NSF/ANSI 53, NSF/ANSI 42, NSF/ANSI 372 Check price
VIQUA VH410UV disinfection B $880 $4,838 18 gpm NSF/ANSI 55 Class B, listed model VH410-V only (with flow restrictor, 14 gpm); the plain VH410 priced here is not the listed model, CSA B483.1, listed model VH410-V only Check price
VIQUA Arros 15UV disinfection B $1,046 $5,100 15 gpm NSF/ANSI 55 Class B, listed model Arros 15-V only (with flow restrictor, 9.4 gpm at 16 mJ/cm2 and 70% UVT); the plain Arros 15 priced here is not the listed model, CSA B483.1, listed model Arros 15-V only Check price
SpringWell FS1Salt-free conditioner B $1,785 $3,087 12 gpm None Check price
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)Under-sink reverse osmosis B $190 $3,253 - NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401, CSA B483.1, NSF/ANSI 372 Check price
AquaTru Classic (AT2000 series)Countertop reverse osmosis B $475 $2,093 - NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401, NSF/ANSI 372 Check price
Pentair FreshPoint GRO-575B (161112)Under-sink reverse osmosis B $722 $2,987 - NSF/ANSI 58, NSF/ANSI 53, NSF/ANSI 42, NSF/ANSI 401, CSA B483.1, NSF/ANSI 53, NSF/ANSI 372 Check price
Pentair FloPlus Protect 20BB (150736)Whole-house cartridge system B $325 $2,343 5 gpm NSF/ANSI 53 Check price
Home Master HMF3SdgFeCWhole-house cartridge system B $550 $2,633 15 gpm None Check price
SpringWell CF1Whole-house filter (city water) B $1,160 $2,814 9 gpm None Check price
APEC ROES-50Under-sink reverse osmosis B $231 $1,075 - NSF/ANSI 58, NSF/ANSI 372 Check price
Home Master TMAFCUnder-sink reverse osmosis B $330 $1,529 - None Check price
Aquasana Rhino WH-1000 (Max Flow WH-1010)Whole-house filter (city water) B $999 $6,924 7 gpm None Check price
Aquasana Rhino Chloramines WH-1011 (Max Flow WH-1021)Whole-house filter (city water) B $1,399 $7,324 7 gpm None Check price
SpringWell LCR-1Whole-house cartridge system B $1,554 $5,869 4.51 gpm NSF/ANSI 53 Check price
Waterdrop X16 (WD-X16)Under-sink reverse osmosis C $1,999 $3,755 - NSF/ANSI 58, NSF/ANSI 42, NSF/ANSI 372 Check price
Kind Water Systems S-500Whole-house filter (city water) C $1,471 $3,359 12 gpm None Check price
SpringWell WS1Whole-house filter (well water) C $2,231 $2,731 12 gpm None Check price
Culligan WH-HD200-CWhole-house cartridge system C $74 $2,801 10 gpm None Check price
iSpring RCC7AKUnder-sink reverse osmosis C $242 $2,862 - NSF/ANSI 58 Check price
Kind Water Systems E-1000Whole-house cartridge system C $976 $4,391 15 gpm None Check price
Kind Water Systems E-2000Salt-free conditioner C $1,353 $5,192 15 gpm None Check price
Aquasana HealthShield WH-HSWhole-house filter (city water) C $2,099 $15,209 5.7 gpm NSF/ANSI 53, NSF/ANSI 401, CSA B483.1 Check price
SpringWell CSF1Whole-house filter (city water) C $2,321 $3,974 9 gpm None Check price
SpringWell WSSS1Whole-house filter (well water) C $3,124 $3,624 11 gpm None Check price
AquaTru Freestanding Model 1 (ATFS-1-W)Countertop reverse osmosis C $1,699 $2,628 - NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401 Check price
AFWFilters WS48-56SXT (Fleck 5600SXT, 48,000 grain)Water softener C $765 $1,265 12 gpm None Check price
SoftPro Whole House Chlorine+ Filter (upflow catalytic carbon)Whole-house filter (city water) C $917 $1,606 9 gpm None Check price
RKIN CS8 / CS9 / CS10 / CS13Whole-house filter (city water) C $938 $2,166 9 gpm None Check price
US Water Systems GreenWave 2.0 (385-GW)Salt-free conditioner C $1,361 $2,621 10 gpm None Check price
SoftPro Iron Master AIOWhole-house filter (well water) C $1,517 $2,692 - None Check price
Aquasana Salt-Free Water Conditioner WH-SFWC-SSalt-free conditioner C $879 $4,264 7 gpm None Check price
SpringWell PFS-1Whole-house cartridge system C $2,910 $3,410 7 gpm None Check price
US Water Systems Pioneer (Enpress CTA0840BBBKP5-04C00)Whole-house cartridge system C $1,669 $2,169 4.51 gpm NSF/ANSI 53 (lead, cyst, PFOA/PFOS), NSF P473 (PFOA, PFOS), CSA B483.1 Check price
Watts OneFlow+ OFPSYSSalt-free conditioner C $829 $4,297 10 gpm NSF/ANSI 372 (lead-free materials only) Check price
SpringWell SS1Water softener C $1,607 $2,107 11 gpm None Check price
Aquasana Rhino Well Water with UV WH-WELL-UVS (WH-WELL-UV)Whole-house filter (well water) C $1,749 $8,523 7 gpm None Check price
SpringWell SPRW-UV-15gpmUV disinfection C $1,101 $3,424 15 gpm None Check price
SoftPro Elite HE (city water, upflow)Water softener C $1,367 $1,867 11 gpm None Check price
US Water Systems Pulsar UV (405-PUV-200)UV disinfection C $995 $2,497 10 gpm None Check price
US Water Systems Matrixx Catalytic Carbon (081-MXF-CX)Whole-house filter (city water) C $1,326 $2,061 5 gpm None Check price
US Water Systems Flexx Oxi-Gen (081-FX)Whole-house filter (well water) C $2,230 $2,730 10 gpm None Check price
AFWFilters Iron Pro 2 fine mesh softener (Fleck 5600SXT)Water softener C $755 $1,255 5 gpm None Check price
AFWFilters Air Injection Titanium 10 (AIT10-25SXT)Whole-house filter (well water) C $1,289 $1,789 6 gpm None Check price
US Water Systems Matrixx InFusion (081-MIF)Whole-house filter (well water) C $2,983 $5,502 10 gpm None Check price
iSpring WGB32BWhole-house cartridge system D $517 $3,521 15 gpm None Check price
Crystal Quest Metal Removal Whole House Water Filter (CQE-WH-01195)Whole-house filter (well water) D $1,331 $2,398 9 gpm None Check price
iSpring WGB32BMWhole-house cartridge system D $536 $4,791 15 gpm None Check price
Express Water WH300SCKSWhole-house cartridge system D $548 $7,963 15 gpm None Check price
US Water Systems Flexx InFusion (081-FIF)Whole-house filter (well water) D $2,255 $4,775 10 gpm None Check price
Crystal Quest SMART Whole House Water Filter (CQE-WH-01114)Whole-house filter (city water) D $1,791 $3,421 9 gpm None Check price
Aquasure Harmony Series (AS-HS32D / AS-HS48D / AS-HS64D)Water softener D $540 $1,914 - None Check price

Grades explained in how we rate systems. Prices from each maker's store, checked September 2026. We earn a commission on some links; it never changes a grade.