Distilled water is safe to drink, so the useful part of the question is what happens when you try to run a household on it. Buying it by the jug means carrying and storing weight every week. Making it at home means running a batch appliance for hours a day. Both work for small volumes, and both become a chore at the point where a plumbed system would not.
The short answer and the practical one
The short answer is yes: a healthy adult on an ordinary diet can drink distilled water without concern, and many people do. The practical answer is that distillation is a small-volume method. It suits drinking water for one or two people, a CPAP machine, a steam iron or a humidifier. It does not suit a family that also wants clean water for cooking, ice, coffee and pets without thinking about it.
Buying it by the jug
Store distilled water is consistent, sealed and requires no equipment, which makes it the sensible route for occasional use. The costs are the ones nobody counts at the shelf: the trips, the storage space, the plastic, and the handling of open containers once they are in use. Households that buy it every week for drinking are usually the ones who would be better served by treatment at the tap.
Making it at home
A countertop distiller takes your tap water, boils it and condenses the steam into a jug, leaving dissolved minerals behind in the chamber. It runs for hours per batch, draws power the whole time and needs descaling before deposits harden, and a hard water supply will scale it quickly. USGS defines hardness as dissolved calcium and magnesium, which is exactly what stays behind and cakes onto the boiling surface.
Whether distillation is the right fix at all
Work backwards from the problem. If the complaint is taste or a specific contaminant at the kitchen tap, a filter or a reverse osmosis system solves it continuously and without handling jugs. If the complaint is scale, spotting and stiff laundry, that is hardness across the whole house and a softener is the tool. Distillation is the right answer mainly when you need small volumes of very low mineral water.
Questions people ask about distilled water can you drink it
Can I drink distilled water every day long term?
For a healthy adult on an ordinary diet, yes. Most people stop for taste reasons rather than health ones, since distilled water is noticeably flat.
Is a home distiller cheaper than buying jugs?
Over time it usually is, once you offset the purchase and the electricity. The real trade is convenience: batches and descaling instead of trips to the store.
Can distilled water replace a water softener?
No. A distiller makes a jug of drinking water. A softener treats every fixture in the house, which is where scale and soap problems actually appear.