Short answer. The Department of Health (DOH) water sanitation advisory, in its archived version of January 2023, says to bring drinking water to a rolling boil for at least two minutes, or to disinfect it with chlorine 1. Phaenyx found no national list of boil-water notices and no official figure in litres per person to store. PAGASA publishes dry spell and drought assessments 2.
How do I know if my tap water is unsafe?
Follow the announcements of your water provider and your local government unit, and treat water as suspect after a typhoon or flood until they say it is safe. Phaenyx found no national list of boil-water or do-not-drink notices in the Philippines. See What to do during a boil-water notice and Do-not-drink notices.
How do I make water safe?
The DOH water sanitation advisory, as archived on 31 January 2023, gives two methods 1:
- Boiling: bring the water to a rolling boil for at least two (2) minutes.
- Chlorine: the advisory describes a chlorine stock solution but does not state the unit for the amount of powder. A wrong disinfection dose is dangerous, so Phaenyx gives no dose here: follow How to purify water or your local health office.
To protect stored water, the DOH says to always use clean containers with a cover, wash containers after every use, clean and disinfect storage tanks at least every quarter, and avoid touching the water with your hands while carrying it 1. See How to purify water and Living without running water.
How much water should I store?
The Philippines has no official figure in litres per person per day that Phaenyx could find. The national Go Bag list is on our Philippines emergency supplies page and kit page. For the figures other agencies use and how to keep water, see How much water to store per person and Water storage containers.
Is the Philippines short of water?
Increasingly. In WRI's Aqueduct 4.0 model, the median of Philippine cities (weighted by population) falls in the "medium to high" category for current water stress, rises to "high" in the 2050 business-as-usual projection, and is "medium to high" for drought risk 3. These are city medians: a given town or river basin can sit higher or lower.
PAGASA, the national weather service, publishes monthly dry spell and drought assessments 2. Its definitions 2:
| Term | PAGASA definition |
|---|---|
| Dry condition | 2 consecutive months of below-normal rainfall (21%-60% below average) |
| Dry spell | 3 consecutive months below normal, or 2 consecutive months way below normal (more than 60% below average) |
| Drought | 3 consecutive months way below normal, or 5 consecutive months below normal |
For household steps, see Drought preparedness.
What about private wells and floods?
After a flood, bring drinking water to a rolling boil for at least two minutes 1 and read Water safety after a flood. Phaenyx found no official Philippine guidance for households with private wells; see Private well emergencies. A household plan can keep your water stock and local contacts in one place.
Frequently asked questions
How long should I boil water in the Philippines?
Bring it to a rolling boil for at least two minutes 1.
Can I use chlorine instead of boiling?
The DOH advisory lists chlorine disinfection 1 but gives no measurable powder dose; see How to purify water.
How much water should a Filipino household store?
No official Philippine figure in litres was found by Phaenyx; see How much water to store per person.
What is the difference between a dry spell and a drought?
For PAGASA, a drought is 3 months of rainfall more than 60% below average, or 5 months below normal; a dry spell is shorter or milder 2.
Sources · 3
- Department of Health (DOH) · Water Sanitation (Health Advisory) checked 2026-10-27
- Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA – DOST) · Climate Advisories (Dry Spell / Drought Assessment) checked 2026-10-27
- World Resources Institute (WRI) · Aqueduct 4.0 (water stress, 2050 projection and drought risk) checked 2026-10-27