Outrageous Water Bill ...

[Hawkmoon]

Another option is they make lockable covers that you can put over your outside water valves. 

https://www.grainger.com/product/ABILITY-ONE-Gate-Valve-Lockout-52ND74?breadcrumbCatId=5537&functionCode=P2IDP2PCP

https://www.grainger.com/product/ACCUFORM-Gate-Valve-Lockout-10K122?breadcrumbCatId=5537&functionCode=P2IDP2PCP

These links are for safety lockouts on larger gate valves, but they probably sell something for garden hose valves also.  I never looked for them at Lowes.  Might be worth a few dollars to make it more difficult if you think theft is the cause. 

Or be sneaky and install shutoffs for the exterior hose bibbs somewhere in the basement (if there is a basement).

[makattak]

Another thought: our water company can tell when we are using water. Is yours not there yet?

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