Product Information Product Name : NuWater M-500 LPManufacturer: Enviro-Flo, Inc.Original Certification Date: 04/07/2016Certification Date: 04/07/2023Certification End Date: 04/07/2030Capacity: 500Material: ConcreteType: Aerobic Treatment SystemClass: Class 1 Certifications Certification: Certifications: NSF/ANSI Standard 40 Standard year: 2023 Version Year of Original Standard: 2012SPE#: 239 Approved Approved Aerators: Manufacturer: HiblowHi Blow model: HP-40 Approved Alarms: Manufacturer: Included on Aerator