The cumulative phosphate intake in a typical daily diet is high and, according to several studies, already exceeds recommended values. The exposure of the general population to phosphorus via drinking water is generally not known. One of the hidden sources of phosphorus in a daily diet is sodium polyphosphate, commonly used as a drinking water softener. In Slovenia, softening of drinking water is carried out exclusively within the internal (household) drinking water supply systems to prevent the accumulation of limescale. The aim of the study was to determine the prevalence of sodium phosphates in the drinking water in Slovenia in different types of buildings, to determine residents’ awareness of the presence of chemical softeners in their drinking water, and to provide an exposure assessment on the phosphorus intake from drinking water. In the current study, the presence of phosphates in the samples of drinking water was determined using a spectrophotometric method with ammonium molybdate. In nearly half of the samples, the presence of phosphates as water softeners was confirmed. The measured concentrations varied substantially from 0.2 mg PO4/L to 24.6 mg PO4/L. Nearly 70% of the respondents were not familiar with the exact data on water softening in their buildings. It follows that concentrations of added phosphates should be controlled and the consumers should be informed of the added chemicals in their drinking water. The health risks of using sodium polyphosphate as a drinking water softener have not been sufficiently investigated and assessed. It is highly recommended that proper guidelines and regulations are developed and introduced to protect human health from adverse effects of chemicals in water intended for human consumption.

The Covid-19 pandemic required the implementation of various preventive hygiene measures to contain the spread of the SARS-CoV-2 virus. Various non-pharmaceutical interventions (NPI) were introduced worldwide. The Covid-19 pandemic has had a significant impact on people’s daily lives. Again, relatively simple hygiene measures have proven to be very effective and useful. The main objective of the present study was to find out how people implement the proposed individual prevention measures and how they perceive the administrative measures implemented during the pandemic. The paper presents the results of a web-based, non-representative cross-sectional study conducted between October 15 and November 17, 2020 in Slovenia during the Covid-19 lockdown. The completion of the survey coincided with the peak of the coronavirus pandemic, so it was to be expected that awareness of the importance of hand hygiene as well as other preventive measures was high among respondents. We find that people have changed their hygiene habits during the pandemic. Habits differ both between individual NPIs and between groups of respondents (age, gender and occupational structure of respondents). There are still opportunities to improve knowledge and attitudes towards hand hygiene and to implement all other NPIs.