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Food and water safety in Indonesia

How to avoid Bali belly, where it's safe to eat street food, water rules, ice, fruit and the most common food-related illnesses.

3 min read

"Bali belly" — a non-specific name for the various traveller's diarrhoea that affects Indonesia visitors — is extremely common. Studies suggest 30–60% of travellers experience some GI upset during their first weeks in country. Most cases are self-limiting and uncomfortable rather than dangerous. The minority that turn serious (parasitic infections, severe dehydration, dysentery) need medical attention.

Water — the headline rules

  • Do not drink tap water anywhere in Indonesia
  • Brush teeth with bottled water for at least the first week
  • Don't put your face under shower water if you're prone to GI issues
  • Ice in tourist areas (Bali, Yogyakarta, Jakarta restaurants) is usually made from purified water — but ask at smaller places
  • Bottled water (Aqua brand mostly) is widely available and cheap. Reuse a thermos bottle and refill from large water dispensers (Galon) to cut plastic waste.

Where it's generally safe to eat

  • Mid-range and upmarket restaurants — almost universally safe
  • Busy warungs and street stalls with high turnover — usually safe (the food doesn't sit)
  • Hotel breakfasts — safe, but watch the salad and unrefrigerated dairy
  • Markets for fruit you peel yourself — safe
  • Indonesian street food at busy stalls (sate, bakso, nasi goreng) — safe at high-turnover places

What to be careful about

  • Buffets sitting at warm temperatures for hours — common at large hotels with weak hygiene
  • Salad and raw vegetables washed in tap water — especially in cheap restaurants
  • Pre-cut fruit from street vendors — unless you watch it being cut in front of you
  • Ice from beach kiosks and small stalls — may be from tap water blocks
  • Unfiltered shake drinks (juice ice blends) — water source can be uncertain
  • Buffet sushi in budget restaurants
  • Eggs left at room temperature (eggs in Indonesia are usually unrefrigerated; high turnover places are fine)
  • Bivalves (clams, mussels) especially in less reputable seafood places

Bali belly — symptoms and self-treatment

Typical case: 1–3 days of loose stools, mild abdominal cramping, slight nausea. Self-limits with rest and hydration.

Self-treatment:

  • ORS (Oral Rehydration Salts) — at any pharmacy as "Oralit"
  • Loperamide (Imodium) — useful for transit days but slows recovery, so use sparingly
  • Probiotics (Yakult is widely available, or pharmacy probiotic capsules)
  • Bland diet — rice, plain noodles, banana, toast (BRAT diet)
  • Avoid dairy, fatty foods, spicy food, alcohol for 48 hours
  • Plenty of bottled water

Go to the hospital if:

  • Diarrhoea lasting more than 3 days
  • Blood or mucus in stool
  • High fever (39°C+)
  • Severe abdominal pain
  • Signs of dehydration (dizziness, very dark urine, lethargy)
  • Vomiting that prevents fluid intake
  • Symptoms in a child or someone with a chronic condition

Specific infections to know about

  • E. coli, salmonella, shigella — bacterial. Standard "Bali belly". Usually self-limits.
  • Amoebic dysentery — parasitic. Persistent loose stools (sometimes bloody) for weeks. Requires metronidazole.
  • Giardia — parasitic. Watery diarrhoea, gas, weight loss over weeks. Requires treatment.
  • Hepatitis A — viral, from contaminated water/food. Vaccine recommended for all visitors.
  • Typhoid — bacterial. Vaccine recommended for long stays.

Vaccines worth getting

  • Hepatitis A (essential)
  • Typhoid (recommended for >2 weeks or off-tourist-path travel)
  • Hepatitis B (recommended for long-stayers, those with intimate contacts)
  • Tdap, MMR — up-to-date as per home country
  • Rabies — for trekkers and long-stayers in outer islands

Common mistakes

  • Drinking ice in obviously cheap places
  • Eating from a deserted street stall (low turnover = sitting food)
  • Continuing alcohol while ill (delays recovery)
  • Treating multi-week diarrhoea as "still adjusting" instead of getting tested
  • Ignoring serious symptoms because "it's just Bali belly"
  • Buying anti-diarrhoea pills and powering through important days at the cost of weeks of recovery

Verify before acting

For pre-travel vaccines see a travel-medicine doctor 6+ weeks before departure. For persistent or severe GI symptoms, get a stool test at a quality hospital. This page is general information, not medical advice. See disclaimer.

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