The answer does not depend only on whether water comes from a water needle, borehole or bucket in a dug well. Its microbiological and chemical quality and the source condition must be known. Water of unknown quality cannot be declared safe to drink from clarity, pleasant taste or an installer's impression.
The laboratory testing programme is agreed according to local risks and intended use. A practical plan considers microbiological parameters, nitrates and nitrites, plus other chemical and water property parameters selected for the situation. The CDC stresses regular testing and additional checks after repairs, flooding or changes in water properties. This is a general safety principle, not a U.S. testing standard directly transferred into Lithuanian law. H01
Why are nitrates and nitrites particularly important?
Nitrogen compounds may enter with fertilisers, wastewater and other pollution sources. Lithuania's National Public Health Centre highlights shallow groundwater vulnerability and infants' greater sensitivity. Taste, smell and colour do not reveal the danger of these substances. H04
Boiling does not remove nitrates. Their concentration may even increase as water evaporates. Boil it and it will be fine is therefore not an appropriate solution for water of unknown chemical quality. A verified safe source is especially important for infant food and drinking water. H04
How should a sample be taken?
Contact the laboratory before sampling. Different tests may need different containers, collection and delivery conditions. Filling a reused drinks bottle on your own initiative or keeping a sample warm for a long time can undermine reliable assessment.
State where the water is taken from: directly from the source, before filters or after treatment. These tests answer different questions. The first helps assess raw water; testing after filters checks what the user actually receives. Record the date, operating mode and recent work.
What should you do after a poor result?
The first step is safe alternative drinking water and discussing the result with the laboratory or responsible specialist. Next, understand the cause. Buying a filter is not enough without assessing whether contaminants enter through a leaking construction, a flood-prone upper section or unsuitable surroundings.
After measures are taken, their effectiveness is checked. One good result does not make a source safe forever; a poor result does not by itself mean another borehole is the only solution. A reasoned action plan is needed, not fear-based selling.
What matters for ongoing use?
Keep a testing history, watch for changes in water properties and protect the source surroundings from pollution. After flooding or unusual inundation, normal use needs reassessing; preventing wastewater and surface water entry matters as much as testing itself. H03
Santechnikas iš Žemaitijos can be a contact for discussing the water supply system, but this text does not mean the business is itself a laboratory or issues water safety assessments. Equipment selection and laboratory confirmation of quality must be clearly distinguished.
Information sources
Choose a source to read its summary without leaving this page.
- H01
- H04
- H03
Sources checked on 2026-09-30. If the manufacturer has changed the product or documentation, follow the latest technical information for the specific model.