The califonts were high-up on the exterior of the clubroom wall but thieves appeared to have moved a frame into place to reach them.
Club secretary Myles Girvan confirmed the showers will be without hot water until the system is repaired.
That has to take place almost regardless of the cost, which depends on insurance.
"But how do you keep it secure?" he said. "That's something we've got to look at."
While there are options of using a showers at other facilities near the park, they are not particularly suitable.
Yesterday, Mr Girvan advised the Hawke's Bay Rugby Union of the possibility that it may want to transfer the two games on Saturday afternoon - a women's Marsh Cup fixture between Clive and Waipukurau club Central, and a Nash Cup premier men's match between Clive and Napier Pirate.
Mr Stevenson was left shaking his head in astonishment, saying: "The people who do these things ... ? That's the worst part of it all, stealing from sports clubs, youth clubs and schools. The sports clubs are under terrific strain, trying to provide opportunities for our young people."