Licenses, Accreditations, Associations


Nieman Plumbing state and local certifications

Nieman Plumbing is licensed, certified and fully insured in all the markets we serve, so you’re assured of plumbers on the job who've got the credentials, and are qualified to handle any plumbing challenge. Our plumbing technicians are fully trained above and beyond the minimum requirements of the respective states we serve.


Licensed Master Plumber

  • State: Ohio, Indiana, Kentucky
  • County: Hamilton, Butler, Clermont, Warren, Montgomery, Greene
  • City: Cincinnati, Fairfield, Hamilton, Kettering, Miamisburg, Middletown, Norwood, Reading St. Bernard
Ohio Certified Hydronics Contractor
Ohio Licensed & Certified Fire Suppression Contractor
  • Sprinkler/Standpipe Systems
  • Fire Pumps
  • Fire Alarms/Detection
  • Portable Fire Extinguishers
  • Engineered Extinguishers
  • Pre Engineered Extinguishers
Ohio Boiler Certification
Ohio Department of Health- Private Water Systems Contractor
Sewer and Water Laterals - Registered Installer
  • Warren County
  • Butler County
  • Clermont County
Septic Installer and Service Provider
  • Ohio: Hamilton, Butler, Warren, Clermont counties
  • Indiana: Dearborn County
Certified and bonded with Greater Cincinnati Water Works & Metropolitan Sewer
City of Cincinnati Licensed Street Contractor