First, you should turn off the water supply. This will ensure that there is no water leakage. Once the water is shut off, you can try removing the stuck kitchen mixer taps ireland. Be sure to turn off the water valves first so that you can reach the cartridge. You can then remove the handle. Once you've removed the handle, the next step will depend on the type of faucet you have. If the water supply is back on, you can try to fix it yourself or call a professional plumber.