1 hour ago, wwest5829 said:

That was my first thought. I think you may have nailed the problem since there is no leak.

I had a similar problem water main burst in the village all the water from my tank drained into the village system even though the stop cock was closed. Faulty stop cock which wasn't a apparent when the village water supply was at normal pressure 

I had a similar problem. It was eventually traced to a break in a pipe where it came through a wall of the house.

4 hours ago, how241 said:

18 hours ago, richard_smith237 said:

When there is water (i.e. before the tank runs empty) - does the water pump run constantly ?

No,  the water pump runs the same as always.  Not so often.

 

Then the leak is between the tank and the pump.....

22 hours ago, worgeordie said:

It could be draining back into supply side if you don"t have a one way valve on it
and also if water pressure is not high enough , if you dont see a leak anywhere ,

that could be the problem.

 

regards worgeordie

A one-way valve is also called a check valve.

On 4/23/2024 at 2:56 AM, how241 said:

It's been fine for 6 years,  never had any problems.  The supply side adds water up high,  close to the top of the water tank so even if it was draining back it could only go down a little bit.  Now it goes down to almost empty. 

Check your toilets, it could be running down through the septic tank and out to the street drains, and your water bill should be high if its leaking away, call a water pump guy to have a look, very cheap but be weary of the septic tank guys, they will try you on. 

Songkran!

😂

Start with the float valve—if it’s not functioning properly, it could be causing the tank to refill continuously, which might not be apparent if the overflow is draining out of sight. Another possibility is a hidden underground pipe leak, especially if your plumbing system includes buried lines.

It’s also worth considering if there’s increased water demand during specific times, like neighbors tapping into your supply or a timer-based irrigation system you might’ve overlooked. For professional help, reaching out to a service like Island Well Service can be a good move, especially if you need expertise to assess hidden issues or repair components.

9 hours ago, bruceluigi said:

Start with the float valve—if it’s not functioning properly, it could be causing the tank to refill continuously, which might not be apparent if the overflow is draining out of sight. Another possibility is a hidden underground pipe leak, especially if your plumbing system includes buried lines.

It’s also worth considering if there’s increased water demand during specific times, like neighbors tapping into your supply or a timer-based irrigation system you might’ve overlooked. For professional help, reaching out to a service like Island Well Service can be a good move, especially if you need expertise to assess hidden issues or repair components.

A bit late buddy

On 4/23/2024 at 12:40 PM, andygrr said:

What type of tank is it. Is it an underground tank brick lined or an above ground tank.

He said earlier that it is a plastic tank sitting on a patio area.

On 1/24/2025 at 7:23 AM, UWEB said:

A bit late buddy

Only 8 months 😉 

On 1/24/2025 at 12:23 AM, UWEB said:

A bit late buddy

 

It was obviously a junkbot post.  Who would recommend a company on Vancouver Island to discuss an issue in Thailand with?