Short answer. About three quarters of Latvians get piped water, mostly from groundwater, and suppliers must test it 12. Phaenyx found no national list of boil-water notices: warnings come from your supplier or municipality. Store about 3 litres of drinking water per adult per day (4 in hot weather) for at least 3 days, a week if you can 4. Private well owners must check their own water 3.
How do I know if my tap water is unsafe?
Since 2024, each water supplier carries out the full monitoring of the water it delivers, under a programme agreed with the Health Inspectorate (Veselības inspekcija), and sends it the results 2. The supplier is responsible for its network and the quality of the water it supplies; the Inspectorate supervises and, when water fails the requirements, advises consumers, suppliers and network owners on what to do 13. Suppliers must also give customers up-to-date information on water quality, on their websites and by other means such as water bills 2.
Phaenyx found no national register of boil-water or do-not-drink notices for Latvia. Expect the instruction from your water supplier or your municipality, and keep their contact details with your emergency papers. How official warnings reach you is explained on our Latvia alerts page.
The most common problems are iron, manganese, ammonium, sulphates and chlorides from the groundwater, which mainly affect colour, taste and smell, plus ageing pipes; small systems in rural parishes are the weak point 1. If you are told to boil water or not to drink it, see What to do during a boil-water notice and Do-not-drink notices.
How much water should I store?
The Ministry of Defence booklet asks households to manage the first 72 hours alone and to keep supplies for at least 3 to 7 days 4. Plan about 3 litres of drinking water per adult per day, 4 litres in hot weather, plus 10 to 12 litres a day for hygiene 4. Two adults for a week need about 42 litres of drinking water. Details are on our Latvia emergency supplies page; see also How much water to store per person per day? and Water storage containers.
Is Latvia short of water?
Not overall. The Health Inspectorate says the country's water resources are sufficient for drinking-water supply, and groundwater reserves fully cover the population's needs 1. The problem is quality, not quantity 1.
In WRI's Aqueduct 4.0 model, the population-weighted median of Latvian cities is in the "low" category for water stress today and in the 2050 business-as-usual projection, and "medium" for drought risk 5. These are city medians: a given town can sit higher or lower. Phaenyx found no national system of water-use restrictions or drought warnings in Latvia. See Drought preparedness.
What if I have a private well?
Piped systems are better protected than individual sources, especially wells 3. People who use their own water source must take their own measures against health risks, and must have their well water tested themselves if chemicals or faecal contamination may have entered it 3. Municipalities should test local public water points in an accredited laboratory, and the Inspectorate can assess the results 3. See Private well emergencies.
What should I do after a flood?
When flooding threatens, stock up on water. In flooded areas, the Inspectorate asks residents to drink boiled or bottled water, also after the flood ends 3. Wells and cellars should then be pumped out and disinfected 3. If you get nausea, stomach pain or diarrhoea, see a doctor at once 3. See Water safety after a flood. A household plan can keep your water stock, supplier contacts and warning channels in one place.
Frequently asked questions
Who tests tap water in Latvia?
The water supplier, under a monitoring programme agreed with the Health Inspectorate, which collects the results nationally 2.
Where do I find my water quality?
From your supplier: it must publish quality information on its website and by other means such as bills 2.
Should I boil water after a flood?
Yes, in flooded areas the Inspectorate advises boiled or bottled water, even after the flood ends 3.
How much water for a week?
About 21 litres of drinking water per adult (3 litres a day), plus hygiene water 4.
Sources
- Veselības inspekcija (Health Inspectorate of Latvia) — Dzeramā ūdens uzraudzība un kontrole — https://www.vi.gov.lv/lv/jaunums/uzraudziba-un-kontrole (accessed 2026-10-27)
- Veselības inspekcija (Health Inspectorate of Latvia) — Dzeramā ūdens noteikumu prasības ūdens piegādātājiem ar 2024. gadu — https://www.vi.gov.lv/lv/jaunums/dzerama-udens-noteikumu-prasibas-udens-piegadatajiem (accessed 2026-10-27)
- Veselības inspekcija (Health Inspectorate of Latvia) — Dzeramā ūdens kvalitāte un tā iespējamais piesārņojums plūdu rezultātā — https://www.vi.gov.lv/lv/jaunums/dzerama-udens-kvalitate-un-ta-iespejamais-piesarnojums-pludu-rezultata-2 (accessed 2026-10-27)
- Latvijas Republikas Aizsardzības ministrija (hosted by VUGD) — Kā rīkoties krīzes gadījumā. Papildinātā redakcija 2024 — https://vugd.gov.lv/lv/media/1351/download (accessed 2026-10-20)
- World Resources Institute (WRI) — Aqueduct 4.0 (water stress, 2050 projection and drought risk) — https://www.wri.org/aqueduct (accessed 2026-10-27)
Turn this into action
Your plan for Latvia, worked out for your household.
- Water, food and equipment counted for each person and pet
- The nuclear plants and zones around your home
- Phaenyx Safe: one tap to tell your people you are safe
Sources
- Veselības inspekcija (Health Inspectorate of Latvia) · Dzeramā ūdens uzraudzība un kontrole checked 2026-10-27
- Veselības inspekcija (Health Inspectorate of Latvia) · Dzeramā ūdens noteikumu prasības ūdens piegādātājiem ar 2024. gadu checked 2026-10-27
- Veselības inspekcija (Health Inspectorate of Latvia) · Dzeramā ūdens kvalitāte un tā iespējamais piesārņojums plūdu rezultātā checked 2026-10-27
- Latvijas Republikas Aizsardzības ministrija (hosted by VUGD) · Kā rīkoties krīzes gadījumā. Papildinātā redakcija 2024 checked 2026-10-20
- World Resources Institute (WRI) · Aqueduct 4.0 (water stress, 2050 projection and drought risk) checked 2026-10-27