Tap water in Bali: what the standard says, and where it is measured

Australia's government puts it in one line. Smartraveller's Indonesia page, updated on 6 September 2026 and marked still current on 10 September, tells travellers to "boil drinking water or drink bottled water". The same page adds: "avoid raw food, such as salads and only eat meat from reputable suppliers."

The British and American health agencies say the same thing without naming Indonesia. UKHSA's TravelHealthPro factsheet on food and water hygiene, last updated 23 October 2025, is written for countries with poor sanitation in general: "it is not advisable to drink tap water or use it to brush teeth, unless it has been treated." The CDC Yellow Book chapter on food and water precautions, published 23 April 2025, is just as general: "Tap water might be unsafe for drinking, preparing food and beverages, making ice, cooking, and brushing teeth."

That is all the official traveller advice there is. We found no Indonesian authority, national or Balinese, that publishes a tap-water statement for visitors.

The main and the glass

One Bali utility publishes figures on its own water. Perumda Air Minum Tirta Sewakadarma, which supplies Denpasar, does so in two scoring tables in its management report for the year ending 31 December 2024.

The first, on PDF p. 77, is built on Kepmendagri 47/1999, the Home Affairs decree for rating water utilities. It rates the utility's "Kualitas Air Distribusi" as "Memenuhi syarat air minum", meeting drinking-water requirements, with a score of 3.00 for 2023, audited, and for 2024, unaudited. Pasal 2 ayat (1) of the decree gives the yearly assessment to the utility's supervisory board, the Badan Pengawas.

The second, on PDF p. 79, is headed "Perhitungan Tingkat Kesehatan Menurut PUPR", the utility's soundness rating by the Public Works ministry's (PUPR) method. Its row "Kualitas Air Pelanggan", customer water quality, divides the tests that met requirements by the tests carried out:

That is 212 failed tests in 2023, the audited year, which PDF p. 77 still marks as meeting drinking-water requirements. In 2024, 14 failed.

Neither table names a parameter, a laboratory or a sampling point, and we found none anywhere in the report. Whether "pelanggan" means water drawn at a customer's tap cannot be read from it.

The p. 77 table carries two more lines. The utility served 53.24% of the population in its service area in 2024, 358,448 people out of 673,270, up from 51.83% in 2023. And: "Belum semua pelanggan mendapat aliran air 24 jam." Not every customer gets water 24 hours a day.

The other utility sites we read say less. Gianyar, Bangli and Klungkung each carry a "Hasil Pengujian Kualitas Air" (water test results) block on their home pages, but it is commented out of the page and holds only lorem-ipsum placeholder text. Gianyar's visible page promises "Kami senantiasa menjamin kualitas air yang sampai kepada anda", that it always guarantees the quality of the water reaching you, with nothing behind it. Jembrana's home page says nothing on water quality. Buleleng's domain, pdambuleleng.co.id, serves a "Suspended Domain" page, so there was nothing to read. Badung's utility, Perumda Tirta Mangutama, publishes customer-service pages and contacts.

A site at pdamtabanan.com carries the title "PDAM Tirta Amerta Buana Kabupaten Tabanan". It links to nothing outside itself, and the domain was registered in August 2024 through a commercial registrar, so we could not confirm it is the utility's own. It publishes no test. We could not reach a site for the Karangasem utility.

Then there is the Health Ministry's own laboratory data. Kemenkes's household drinking-water study, SKAM-RT 2020, set a target sample of 25,000 households nationwide and did its fieldwork in November and December 2020. It found that 68.9% of the household drinking-water sources it tested failed on E. coli, on 100 ml samples. Sources that were branded bottled water were not tested. At the point of drinking, 74.4% of samples showed no E. coli in 1 ml, a measure the report says cannot be compared with the then drinking-water standard, PMK 492/2010. The single most-used source was refill water, at 31.1%.

The two sets of figures measure different things. Denpasar's are its own counts, against parameters it does not name. The Kemenkes study measured what households actually drink, nationally. Neither ties a result to a tap a traveller would use.

The standard is zero, and it survived the 2026 repeal

Indonesia's drinking-water standard is in the Lampiran of Permenkes No. 2 Tahun 2023, Tabel 1, "Parameter Wajib Air Minum", on page 29:

The column is headed "kadar maksimum yang diperbolehkan", maximum permitted level. For both bacteria the maximum is zero, and no tolerance is written in.

The same page, Bab II A.1.a, opens with the definition: "Air Minum adalah air yang melalui pengolahan atau tanpa pengolahan yang memenuhi syarat kesehatan dan dapat langsung diminum." Drinking water is water, treated or not, that meets health requirements and can be drunk directly. It defines a grade of water. It does not say any tap delivers it.

On 11 March 2026 Permenkes No. 3 Tahun 2026 came into force and repealed most of 2/2023. Pasal 99 huruf dd repeals it "kecuali Pasal 12, Pasal 21, Pasal 23, Pasal 29, Pasal 32, Pasal 39, dan Pasal 45 beserta Lampiran": except those seven articles, together with the Lampiran. Pasal 12, one of the survivors, is the article that places the standards in the Lampiran. So the table stands, and so does the definition above it.

Pasal 1 angka 4 of 2/2023 carried the same sentence in the body of the regulation. Pasal 1 is not on the exception list, so that article has been repealed since 11 March 2026, and 3/2026 writes no definition of its own. The wording "dapat langsung diminum" remains in force through the Lampiran.

The 2026 regulation names who must meet environmental-health standards. Pasal 57 ayat (2) huruf d puts "hotel atau penginapan" on the list, with compliance proven by a health-office certificate or label such as the sertifikat laik higiene sanitasi (ayat 5 and 6). This does not say a hotel's tap must be drinkable. Those standards cover drinking water and, separately, water for hygiene and sanitation.

Routine outside checks happen "paling sedikit 1 (satu) kali dalam 1 (satu) tahun", at least once a year (Pasal 59 ayat 6). That is a floor. Pasal 97 ayat (1) gives those covered six months from promulgation to comply, which by our count ends on 11 September 2026.

Refill depot or sealed gallon: one blue bottle, two regulators

The blue 19-litre gallon can be two different products.

Refilled at a neighbourhood depot, it is Depot Air Minum water. The surviving Lampiran defines a depot as a business that treats raw water into drinking water and sells it in bulk directly to consumers (p. 51). Its water must go to an accredited laboratory, or one designated by the local government, every 3 months for E. coli and every 6 months for the full parameter set (p. 93). The old stand-alone depot rule, Permenkes 43/2014, was repealed by 2/2023 itself.

Factory-sealed from a brand, it is air minum dalam kemasan, packaged water, labelled under BPOM rules. Perka BPOM No. 6 Tahun 2024 Pasal 61A makes a statement compulsory on polycarbonate packaging: "dalam kondisi tertentu, kemasan polikarbonat dapat melepaskan BPA pada air minum dalam kemasan", under certain conditions polycarbonate packaging may release BPA into bottled water. Pasal II angka 1 gives bottled water already on the market, "yang beredar", four years from promulgation on 5 April 2024 to comply, so the deadline for those products is 5 April 2028. Until then, a polycarbonate gallon already on sale without the statement is within the transition.

Ice

The same Lampiran, page 59, sets hygiene principles for premises serving ready-to-eat food. Among them: "Bahan baku es batu adalah air dengan kualitas Air Minum." The raw material for ice is water of drinking-water quality.

That is a national rule, still in force, binding on food premises. It is not a Bali law, and we found no Bali instrument on ice. It governs what ice is made from, not who supplies it, and nothing we read shows compliance at any particular bar. UKHSA's advice is flat: "Ice should also be avoided." The CDC adds a point for anyone ordering a cocktail: "The alcohol content of alcoholic beverages will not kill pathogens in ice made from contaminated water."

The drink warning the water pages leave out

Smartraveller's Indonesia page also warns of methanol poisoning, with cases "including in Bali and Lombok". Its advice: "Only drink branded, sealed drinks."

Before the trip

CDC's Indonesia page, last reviewed 25 August 2026, recommends hepatitis A for unvaccinated travellers aged 1 and over, and typhoid for "most travelers". UKHSA's Indonesia page recommends hepatitis A for all unvaccinated travellers and typhoid for most. None of the three agencies uses the phrase "Bali belly". UKHSA's factsheet puts travellers' diarrhoea at 20 to 60 percent of travellers from high-income countries visiting low-income areas, without naming Indonesia. The rules for carrying medicine into Indonesia are on the medications page. Rabies has its own page.

What we could not establish

• A lab result for water at any identified Bali tap. Denpasar publishes counts of tests passed, not the results, and only in a management report.
• What Denpasar's "Kualitas Air Pelanggan" tests sample, and against which parameters. PDF p. 79 gives the counts and nothing else: no sampling point, no parameter, no laboratory.
• What Denpasar's "memenuhi syarat air minum" and its 3.00 measure, or why audited 2023 passes when 212 tests failed. Kepmendagri 47/1999 names "Kualitas Air Distribusi" as a performance indicator for water utilities, but the BPK copy is three pages long and carries no scoring annex: no sampling point, no pass rate, no scale.
• Anything from the Karangasem utility, whose site we could not reach, or from Buleleng's, whose domain is suspended. Whether pdamtabanan.com is the Tabanan utility's official site.
• Whether PP 28/2024 defines drinking water differently from the Lampiran. We did not read it.
• The hygiene-grade values in Lampiran Tabel 3, the grade a hotel shower or basin must meet. The table is illegible in the scan's text layer, and we did not read that page's image.
• A Bali-only figure from SKAM-RT. The report has provincial tables, but its columns come apart in extraction and our reading of the Bali row is unconfirmed, so this page gives the national figure only.
• A Bali regime of its own for ice or depots. We found no Pergub and no Dinkes Bali instrument.
• The certificate status of any particular depot, hotel or gallon brand. That would need a field check.
• Bottled-water prices. We have no dated survey, so none are printed here.