Sewage irrigation is an effective way to alleviate the shortage of irrigated water and recycle municipal sewage.A series of scientific

social and economical problems caused by sewage irrigation

such as environmental

food security and sustainable development etc.

are getting more concerns.The soil of freshwater irrigated farmland in piedmont of Xiaodian district is chosen as the control spot.The content of the seven heavy metals in control spot is used as the assessment standard.The soil in the depth of 0～20 cm

20～40 cm

40～60 cm

60～100 cm is evaluated.Five grades(security

warning

light pollution

median pollution

serious pollution) are classified according to the assessment results.Therefore

the pollution status evaluation of the soil and wastewater is of great significance on guiding the scientific management

reusing for municipal sewage

rational allocation of resource and crops security.