Rural Texas properties run on well water. That means when the power goes out, your water supply goes with it. City utilities run on a grid with multiple points of redundancy. Your well pump runs on one breaker, one circuit, and one motor. Cut the power and you cut the water.
On generator backup for your well pump, J4 Water Works starts with the same rule: diagnose first, then quote the work. See our emergency well and septic service for the urgent well, pump, and septic diagnosis behind this guide.
Ice storms have knocked out power to rural parts of our area for three and four days at a stretch. Hurricane season brings longer ones. A summer thunderstorm can pull down a service line and leave a place dark for 12 to 24 hours. On a working ranch, livestock need water every day. Families need water every day. Having no plan is not a plan.
Here is what to know about backup power for your well, without overcomplicating it.
Start with your pump, not the generator
Before you buy anything, find out what you are running. A submersible well pump draws one level of power to keep running once it is up to speed. But every time it starts, it pulls a surge of power that is much higher than the steady running draw. A generator sized only for the running load will bog down or stall the moment that motor kicks on, because it cannot deliver the startup surge.
Pull out your pump's paperwork or call us. We can tell you the horsepower rating and help you understand what size generator can handle it. If you do not know what is in your well, that is the right first question. Buying a generator without knowing your pump is the most common way people waste money on a unit that looks capable but fails when it matters.
We diagnose before we quote. That goes for equipment purchases too. If you are not sure what your pump is doing or how old it is, a service call before storm season is a better use of money than guessing at a generator size. Here is what well pump failure looks like Well Pump Failed? What to Expect When You Call and what we check before we recommend anything.
Two paths: portable or standby
You have two realistic options for backup power.
Portable generator with a manual transfer switch. This is a gas or propane generator you own, store, and start by hand when the power goes out. The up-front cost is lower. You need to be home when it happens, have fuel on hand, and connect it properly through a transfer switch. For people who want protection without a major installation, this is a workable path.
Whole-property standby generator with automatic transfer. This is hardwired to your property and starts itself within seconds of a power outage. It runs on a propane tank or a natural gas connection. More expensive to install and it needs periodic maintenance, but it requires nothing from you in the moment. You wake up, the power is off next door, and your lights and well are still running.
Which one fits depends on how often your area loses power, how long those outages run, how many animals or people depend on the water, and whether you are typically on the property when storms hit. There is no single right answer.
The transfer switch: not optional
This is the part most people try to skip. It is the part that matters most for safety.
You cannot plug a generator directly into a standard outlet and run your well from it safely. Doing that without a transfer switch puts power back onto the utility grid through your meter. A lineman working to restore power to your neighborhood can be electrocuted by that backfeed. This is why a transfer switch is required by electrical code and why no licensed electrician will skip it.
A transfer switch disconnects your property from the grid before your generator comes online. It keeps your power source and the utility power completely separate. Portable setups use a manual transfer switch that you throw before you start the generator. Standby setups use an automatic transfer switch that does it for you.
An electrician installs the transfer switch. We handle the well side. If you are planning a backup power setup for your property, get both trades talking before either one starts work. The well pump circuit needs to be on the right side of the switch, and that is worth confirming before anyone picks up a drill.
What your pressure tank buys you
When power drops, you do not go to zero water instantly. Your pressure tank holds a reserve of pressurized water that stays available even when the pump is not running. A tank that is properly charged and sized for your home may carry you through a short outage without noticing a difference at the tap.
How much reserve you have depends on the tank size and how charged it was when the outage hit. For a one-hour outage with a typical household tank, you may get through it. For anything longer, do not count on it.
A pressure tank that has lost its air charge will hold almost nothing. The air bladder is what gives you the reserve. If the tank is waterlogged, it cycles the pump constantly and holds very little water when the pump is off. If you have not had your tank checked in a few years, that is worth knowing before the next storm. Here is how to tell when your pressure tank needs attention. What Is a Pressure Tank and When Does It Need Replacing?
After a long outage: what to check before you trust the water
When power comes back after a long outage, and especially if there was flooding, freezing, or any physical disturbance near the well, do not assume your water is clean. A prolonged pump shutdown can pull air into the system. Flooding near the well head is a contamination risk. A freeze can crack a line or a fitting.
After a major event, run a couple of taps until the water looks clear and any air is purged. Then test. If you have any doubt about what happened near the well head while the power was out, a water quality test before drinking is worth the small cost. Here is how often to test and what to test for. How Often Should You Test Your Well Water?
When the outage reveals a problem that was already there
Sometimes a power outage exposes a problem that existed before the lights went out. The pump comes back on and the pressure never builds right. The water looks different. The system cycles constantly. In those cases, the outage did not cause the trouble. It exposed something that was already going wrong.
If your system does not behave normally after power is restored, call us before you assume it is a generator or electrical issue. It may be the pump, the pressure switch, the tank, or a line that froze and cracked. We test and diagnose before we recommend anything. Here is what weak pressure after an outage usually points to. Low Water Pressure on a Well: What's Actually Wrong
If you are without water right now
Generator planning is for tomorrow. If you have no water today, call us. Water does not wait for Monday, and neither do we.
We diagnose first. We test the breaker, the switch, the pump output, and the pressure before we ever say the word replacement. Most calls like this are a tripped breaker, a failed pressure switch, or a waterlogged tank. We fix what is broken and leave.
If the water's not right, nothing else on the land works. That is true whether the cause is a storm or a part that gave out. We show up, we explain it, we get it done. See our full well emergency checklist here Well Stopped Producing Water? The Emergency Checklist if you need to start troubleshooting before we arrive.
Ready to talk through backup power options for your property? Request water service request service and we will start with what you have before we recommend anything new.