Welcome To M and H Pump Service.We are M and H Pump Service located in Corvallis Oregon and are locally owned and operated with over 25 years experience. We install and service water pumps. At M and H Pump Service we take the time to answer any questions you may have and will get you the most accurate estimate possible.We offerï Free estimatesï Over 25 years experience ï Serving all of Corvallis and Surrounding Areas. ï Fast, friendly, efficient service ï Free customer educationï References available Call today for free phone consultation and advice.