In 2011, a total of 977 samples of domestic crops were tested in the official control of pesticide residues carried out by the Institute of Plant Protection – National Research Institute. The samples were taken randomly by the staff of Plant Health and Seed Inspection at production sites in the whole country. The monitoring programme covered 230 compounds and 38 products. 126 samples of fruit, 484 samples of vegetables, 346 samples of cereals and 21 samples belonging to other products groups were analysed. Residues of 43 compounds were detected in 21.7% of the samples. Violations of MRLs were found in 0.6% of analysed samples, while the unauthorised plant protection product use in 2.5% of samples tested. Pesticide residues were detected in 58.7% of fruit samples, 23.8% of vegetable samples and 4.9% of cereal samples and in 28.6% of other samples. They were found most often in samples of apples (60.5%), tomatoes (52.6%), sweet peppers (50.0%) and carrots (42.1%). Most of the residues detected in twenty five commodities were fungicides and insecticides, and their percentages from 335 findings were equal respectively to 63.9% and 32.5%. The most commonly found were residues of chlorothalonil in tomatoes (31.6%), chlorpyrifos in carrots (28.9%), prochloraz in mushrooms (26.1%), and dithiocarbamates in apples (25.4%), potatoes (24.2%) and tomatoes (21.1%).