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With an outdoor unit buried in the ground, you will not hear it at all if you are 10 or 15 feet away. If you are standing on top of it, it sounds like your washing machine when it’s running — just a hum (69 dB at 6 feet).
Typical operation is a total of 10 to 30 minutes per day for single-family residential homes. It is designed to turn on several times throughout the day (20 to 40 times for a single-family home), for 1 to 2 minutes each time. This will vary with water usage — the more water you use, the more often the pump will turn on.
A typical single-family home uses approximately 250 gallons of water per day. The E/One pump for this home will consume about 200 KWh of electricity per year. Check your utility bill for the cost per kilowatt hour in your area. For example, if you pay 11 cents per kilowatt hour: $0.11 KWh x 120 KWh = $13.00 per year cost of electricity to operate the E/One pump.
The only items that should be going down your drains are water, regular toilet paper, and human waste. The following items should not be introduced into the grinder pump station (or any sewer system); they can damage or cause premature problems (parts wearing out) with your pump, or build up in the tank and block your pump from working properly.