| GDQ-XL | Quartz Sleeve UV Pure Hallett 1000P | 1000W | 1000R Ultraviolet Disinfection Systems | wahlwater.com | 217 CAD | 300 CAD | −27.7% |
| GDQ-M | Quartz Sleeve UV Pure Hallett 500PN | 500P | 500W | 500R Ultraviolet Disinfection Systems | wahlwater.com | 181 CAD | 250 CAD | −27.6% |
| GD37 | Ballast UV Pure Hallett 1000P | 1000R | 1000W Series Ultraviolet Disinfection Systems | wahlwater.com | 471 CAD | 650 CAD | −27.5% |
| R400011 | Wiper Assembly Kit with Seals | Hallett 15xS | wahlwater.com | 239 CAD | 320 CAD | −25.3% |
| GD19 | UV Pure Wiper Postion Switch | Hallett 500 | 750 | 1000 | wahlwater.com | 20 CAD | 25 CAD | −20% |
| E500011 | UV Pure Seals Kit | Hallett 13 Utraviolet Disinfection Systems | wahlwater.com | 45 CAD | 55 CAD | −18.2% |
| E500000 | UV Pure Flexible Stainless Steel Hose 3/4" | Hallett 13 Utraviolet Disinfection Systems | wahlwater.com | 41 CAD | 50 CAD | −18% |
| GD12 | UV Pure Bottom Plastic Cap | Hallett 500 | 750 | 1000 Series Utraviolet Disinfection Systems (Copy) | wahlwater.com | 41 CAD | 50 CAD | −18% |
| GD7 | UV Pure Air Filter Kit | Hallett 500 | 750 | 1000 Series Utraviolet Disinfection Systems | wahlwater.com | 23 CAD | 28 CAD | −17.9% |
| R400013 | UV Pure Wiper Kit Assembly | Upstream NC15-50 | NC30-75 | wahlwater.com | 290 CAD | 350 CAD | −17.1% |
| C300068 | UV Pure Bracket Assembly with Lamp Harness | Hallett 30 | NC15-50 | NC 30-75 | 750P | wahlwater.com | 141 CAD | 170 CAD | −17.1% |
| GE3 | UV Pure Purge Valve Relocation Kit | Hallett 500 | 750 | 1000 Series Utraviolet Disinfection Systems | wahlwater.com | 266 CAD | 320 CAD | −16.9% |
| R400009 | UV Pure Air Filter | Hallett 15xs | Upstream NC10-50 | NC10-75 | NC15-50 | NC15-75 | NC30-75 | wahlwater.com | 18.4 CAD | 22 CAD | −16.4% |
| Z400003 | UV Pure Door Safety Switch | R47 X-8 | R48 X-12 Cactus Ultraviolet Disinfection Systems | wahlwater.com | 13.4 CAD | 16 CAD | −16.2% |
| R400060 | UV Pure Circuit Board / Ballast 120V | Upstream NC30-75 Ultraviolet Disinfecton Systems | wahlwater.com | 778 CAD | 925 CAD | −15.9% |
| GD8 | UV Pure UV Chamber Blower Kit | Hallett 500 | 750 | 1000 | wahlwater.com | 76 CAD | 89 CAD | −14.6% |
| 150013 | UVPure 120V Power Cord | All Systems | wahlwater.com | 12 CAD | 14 CAD | −14.3% |
| G20 | UV Pure 750PN Hallett 27GPM NSF55 Ultraviolet (UV) Potable Water Disinfection System | wahlwater.com | 5825 CAD | 6,790 CAD | −14.2% |
| G14 | UV Pure 500P Hallett 16.5GPM Ultraviolet (UV) Potable Water Disinfection System | wahlwater.com | 3649 CAD | 4,250 CAD | −14.1% |
| G24 | UV Pure 1000P Hallett 100GPM Ultraviolet (UV) Potable Water Disinfection System | wahlwater.com | 10059 CAD | 11,690 CAD | −14% |
| G19 | UV Pure 750P Hallett 27GPM Ultraviolet(UV) Potable Water Disinfection System | wahlwater.com | 5290 CAD | 6,090 CAD | −13.1% |
| GC19 | UV Pure Ultraviolet (UV) Lamps | Hallett | 1000P | 1000W | 1000R | wahlwater.com | 678 CAD | 775 CAD | −12.5% |
| GDW-M | UV Pure Wiper Assembly Kit | Hallett 500P | 500PN | 500R | 500W | wahlwater.com | 525 CAD | 585 CAD | −10.3% |
| GD10 | UV Pure Temperature Sensor (Thermistor) Kit | Hallett 500 | 750 | 1000 | wahlwater.com | 82 CAD | 90 CAD | −8.9% |
| 550238 | UV Pure Solenoid Valve 1" | NSF 55 | Hallett 500PN & 750PN Ultraviolet Disinfection Systems | wahlwater.com | 345 CAD | 375 CAD | −8% |
| GD1 | UV Pure UV Sensor | Hallett 500 | 750 | 1000 Series | wahlwater.com | 825 CAD | 875 CAD | −5.7% |
| GDQ-L | Quartz Sleeve UV Pure Hallett 750PN | 750P | 750W | 750R Ultraviolet Disinfection Systems | wahlwater.com | 269 CAD | 283.5 CAD | −5.1% |
| C300079 | UV Pure Wiper Assembly Kit with Seals | Hallett 30 | wahlwater.com | 525 CAD | 550 CAD | −4.5% |
| 550229 | Solenoid Valve 1" UV Pure | NSF | Hallett 15XS & All Upstream Models | wahlwater.com | 315 CAD | 330 CAD | −4.5% |
| R400044 | UV Pure Water Temperature Sensor | Upstream & Hallett 15xs Ultraviolet Disinfection Systems | wahlwater.com | 91 CAD | 95 CAD | −4.2% |
| X100032 | UV Pure Water Temperature Sensor Replacment | Hallett 30 & 13 | wahlwater.com | 87 CAD | 90 CAD | −3.3% |
| GD6 | UV Pure Seals Kit | Hallett 500 | 750 Series Utraviolet Disinfection Systems | wahlwater.com | 76 CAD | 78 CAD | −2.6% |
| R400059 | Circuit Board / Ballast Upstream NC30-75 | wahlwater.com | 829 CAD | 850 CAD | −2.5% |
| G16 | UV Pure 500R Hallett 10 GPM Ultraviolet (UV) Reuse / Rainwater Water Disinfection System | wahlwater.com | 4090 CAD | 4,190 CAD | −2.4% |
| C300115 | UV Pure Hallett 30 Reflector Panel (Qty 1) | wahlwater.com | 269 CAD | 272 CAD | −1.1% |
| G26-420 | UV Pure 1000W Hallett 75GPM Ultraviolet (UV) Waste Water Disinfection with 4-20mA & Modbus | wahlwater.com | 12300 CAD | — | — |
| G26 | UV Pure 1000W Hallett 75GPM Ultraviolet (UV) Waste Water Disinfection System | wahlwater.com | 11590 CAD | — | — |
| G25 | UV Pure 1000R Hallett 75 GPM Ultraviolet (UV) Reuse / Rainwater Water Disinfection System | wahlwater.com | 11390 CAD | — | — |
| G22-420 | UV Pure 750W Hallett 40GPM Ultraviolet (UV) Waste Water Disinfection with 4-20mA & Modbus | wahlwater.com | 6750 CAD | — | — |
| G22 | UV Pure 750W Hallett 40GPM Ultraviolet (UV) Waste Water Disinfection System | wahlwater.com | 5880 CAD | — | — |