Why the wording matters
Water notices are not all the same, and the legal weight differs by jurisdiction. Reading the exact wording — and the action it asks of you — is more important than the label, but here is how the terms are generally used in the U.S. and Canada.
Boil water advisory / notice
The most common form: a public announcement, usually issued by the water utility, telling customers to boil tap water before consumption. In the U.S. it is often precautionary (pressure loss, main break) and legally the utility is required to notify you; in Canada it is frequently issued by a medical health officer or provincial regulator. Treat it as binding: boil for one minute before drinking, cooking, ice and teeth.
Boil water order
An order is a stronger, enforceable directive, typically issued by a state agency, court or health officer — not by the utility alone. It is used when contamination is confirmed or a system repeatedly fails to comply. In practical terms you do the same thing (boil), but the system is usually also under regulatory obligations to fix the root cause, and violations can carry penalties. States like Texas and Florida use the word “notice” broadly, while some states reserve “order” for confirmed-contamination events.
Do not consume / do not drink
A do-not-consume (Canada) or do-not-drink (U.S.) advisory means the water contains something boiling cannot fix — chemicals, fuel, blue-green algae toxins, high nitrate. Nobody, including pets, should drink it, and it should not be used for cooking, ice or formula. Showering and hand-washing are usually still allowed unless the chemical is dangerous on skin.
Do not use
The most restrictive level: water must not touch skin, lungs or anything in the household — no drinking, no showering, no dishwashing, no humidifiers. It is reserved for severe chemical or algal toxin events. Switch entirely to bottled water and follow emergency distribution instructions from officials.
Water quality advisory (B.C. and some U.S. systems)
A weaker, early-stage notice used in British Columbia and by some U.S. utilities for vulnerable people (infants, elderly, immunocompromised) to boil water while the system investigates a minor risk. If you are healthy, you may get limited guidance; if you are at higher risk, boil everything.
Quick comparison
| Notice | Typical trigger | What you must do |
|---|---|---|
| Boil water advisory / notice | Pressure loss, main break, preventive action | Boil 1 min before drink/cook/ice/teeth; shower OK |
| Boil water order | Confirmed contamination or non-compliance | Same as advisory, enforceable by the state |
| Do not consume / drink | Chemical or toxin contamination | No drinking or cooking; use bottled water |
| Do not use | Severe chemical event | No skin or lung contact at all; bottled water only |
FAQ
If my utility says “advisory”, can I wait for the all-clear?
No. Every advisory asks you to act immediately. The incubation time for waterborne illness is days to weeks, so by the time symptoms appear the exposure has already happened.
Who has authority to lift a notice?
The issuer — utility, health officer or state/provincial regulator. Utilities must usually show two consecutive rounds of clean samples after repairs before the authority approves rescission.