Ten years is a good run for a water heater. Fifteen is a gift. So if yours is somewhere in there and you're seeing a little rusty colored water at the base, that's the tank talking to you. Take it as a blessing in disguise, because you caught it while it's still a little water on the floor. A tank that lets go on its own doesn't give you that kind of warning. The smart move is getting a seasoned contractor out there to look at it now, before it decides for you.
The tank will tell you, if you listen early. Water not as hot as it was. Hot water quitting with people still in line, and in Temecula's family sized households, the line is real. A pilot that needs relighting. Rust or moisture at the base. Any of those is the tank telling you something, and the early call is the one that keeps you in control. Repair gets weighed honestly against the tank's age and the water it's lived with. Replacement, if that's the answer, gets sized to the actual family and chosen calmly, tank or tankless, with the tradeoffs explained in plain English.
The alternative is joining the street's emergency rotation, deciding everything the day the water runs cold. Skipping that day is the entire point. One unhurried call at the first sign, the honest read, your decision from the driver's seat. The Valley's water is hard. The decision doesn't have to be.