McMinnville Water Department has hit a warranty snag while replacing water meters.“These are our cash registers,” said Water Department director Anthony Pelham, holding up an electronic water meter that measures how much water each customer uses. “I’m entrenched in making sure they are accurate. This is the item that we’ve been working on, the warranty replacement of, but in sending our returns back, we’ve gotten into a conflict with the actual providing company.”In 2006, the city entered into a contract with Volunteer Utility Sales for electronic, radio-read water meters at a cost of $1.1 million.