The water meter should be read at 10 to 20 minute intervals. If it continues to run or turn, a leak probably exists and needs to be located. Be sure the water heater thermostat is not set too high. Extremely hot settings waste water and energy because the water often has to be cooled with cold water before it can be used. Use a moisture meter to determine when house plants need water.
More plants die from over-watering than from being on the dry side.
Look at the grass, feel the soil, or use a soil moisture meter to determine when to water. Do not over-water. Soil can hold only so much moisture, and the rest simply runs off. A timer will help, and either a kitchen timer or an alarm clock will do. Apply only enough water to fill the plant's root zone.