The subject of the final paper is an overview of the environmental state in Varaždin, Međimurje and Krapina-Zagorje counties in the period from 2016 to 2021. The data were obtained by research, measurement and sampling of parameters for water, air and soil and are presented in Environmental Status Reports for each county. Measurements and sampling were conducted by competent institutions responsible for that area. The obtained data depicts the state of water, air and soil in the areas of these counties. The water quality is determined by the ecological and chemical state of the water. Air quality is conditioned by the levels of pollutants in the air and is determined by: upper and lower assessment thresholds, target values of a certain parameter and long-term goals. In northwestern Croatia, the air quality is satisfactory for all parameters except for ground-level ozone (O3), which falls into the second category of air quality. The soil is in a satisfactory condition if its chemical, biological and physical parameters are within the permissible limits. Soil erosion is the leading cause of soil degradation, is the main cause of landslides and represents a significant problem in northwestern Croatia. Soil pollution is mainly caused by excessive use of mineral and organic fertilizers in agriculture. The paper includes tables showing the values of individual parameters that deteriorate the state of water, air and soil quality. Solutions have been developed or are being worked on for parameters that do not comply with the legally prescribed limits.