Widely Used Means to Prevent this Waste. Sub-Slab Leaks are a result of corrosion.
Oil companies protect their pipelines from corrosion by installing magnesium anodes.
Shipping and boating companies and the US Navy install anodes on ships and boats to prevent corrosion. Water and gas companies use cathodic protection to prevent corrosion on their pipes, but they install an isolating adapter at the property line meter which leaves your pipes unprotected. Water heater manufacturers install magnesium anodes in water heaters to prevent corrosion. The guaranteed water heater life is based on the size of magnesium anode installed. Installation of magnesium or zinc anodes on buried pipes for all types of developed real estate will prevent corrosion on copper and galvanized steel pipes and prevent sub-slab leaks.