The content and profile distribution of lead in exchangeable (F1), reducible (F2), oxidizable (F3) and residual (F4) fractions, separated according the BCR sequential procedure in cultivated Stagnic Luvisols of Siedlce Upland was examined. Natural total content of lead was found in the soils, and its profile distribution resulted mostly from the abundance of parent material and advancement of the soil formation of lessivage process. Mean percentage of lead in green fractions with the BCR method presents the following series of decreasing values: F4 > F2 > F3 > F1. The most lead in fractions F1 and F3 was recorded in surface horizons (Ap, EB); F2 – in the enrichment horizon (Bt); F4 – in the parent material horizon (C, Ck). Significant effect of soil properties (pH, Corg, clay fraction, KPW, Pbt) was indicated on the lead content in separated fractions. Accumulation of lead in humus horizons, including its percentage in readily soluble bioavailable fraction F1, is a result of a small but long lasting anthropopressure, which does not limit agricultural use of the studied soils to production of high quality agricultural products.

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