Total maximum daily load enforced in 2004 is a program to evaluate the amount of pollutants by each land use type and
manage to meet a target water quality of each waterbody. The many research to calculate runoff load of pollutants by landuse
type have been studied. This study was conducted to calculate pollutants EMC, load and unit load in stormwater runoff
generated from tomato growing area. Monitoring was conducted about 32 event during 4years and water quality parameters such
as BOD, CODMn, TOC, TSS, TN, TP, NH3-N, NO3-N, PO4-P were analyzed at the laboratory. The average EMC were
measured as follows: 9.6 BOD ㎎/L, 17.2 CODMn ㎎/L, 5.5 TOC ㎎/L, 319.4 TSS ㎎/L, 4.4 T-N ㎎/L, 2.6 T-P ㎎/L, 0.5
NH3-N ㎎/L, 0.04 NO2-N ㎎/L, 2.6 NO3-N ㎎/L, 0.8 PO4-P ㎎/L. TN and TP is dichargeed as NO3-N and particle phosphorus
type, respectively.