diff --git a/apps/st/src/components/module/DataGrid.tsx b/apps/st/src/components/module/DataGrid.tsx
index 8df22b216..7d7f925ee 100644
--- a/apps/st/src/components/module/DataGrid.tsx
+++ b/apps/st/src/components/module/DataGrid.tsx
@@ -1171,7 +1171,7 @@ const DataGrid = ({
                                 const gv = gridRef.current?.gridView;
                                 if (!gv?.columnByName) return;
                                 columns.forEach((column) => {
-                                    const baseStyleName = column.styleName ?? (column.editable === false ? 'rg-cell-readonly' : undefined);
+                                    const baseStyleName = column.styleName;
                                     const gridCol = gv.columnByName(column.name) as { styleCallback?: (g: unknown, dataCell: { itemIndex?: number; index?: { itemIndex?: number }; dataField?: string; fieldName?: string }) => string } | null;
                                     if (gridCol) {
                                         gridCol.styleCallback = (_g, dataCell) => {
@@ -1191,12 +1191,7 @@ const DataGrid = ({
                         }}
                     >
                     {columns.map((column) => {
-                        const baseStyleName =
-                            column.styleName != null
-                                ? column.styleName
-                                : column.editable === false
-                                    ? ('rg-cell-readonly' as const)
-                                    : undefined;
+                        const baseStyleName = column.styleName;
 
                         return (
                             <RGDataColumn
diff --git a/apps/st/src/components/util/column/input/SeweragePenetrationRateInpColumn.ts b/apps/st/src/components/util/column/input/SeweragePenetrationRateInpColumn.ts
index 159726976..41a9c5700 100644
--- a/apps/st/src/components/util/column/input/SeweragePenetrationRateInpColumn.ts
+++ b/apps/st/src/components/util/column/input/SeweragePenetrationRateInpColumn.ts
@@ -7,29 +7,29 @@ import { ValueType } from "realgrid";
 export const SeweragePenetrationRateInpColumn = {
     columns: [
         // 행정구역
-        { name: 'sido', fieldName: 'sido', header: { text: '시도' }, footer: { text: '합계' }, editable: false },
-        { name: 'gugun', fieldName: 'gugun', header: { text: '시군구' }, editable: false },
-        { name: 'adstDong', fieldName: 'adstDong', header: { text: '행정구역명' }, editable: false },
+        { name: 'sido', fieldName: 'sido', header: { text: '시도' }, footer: { text: '합계' }, editable: false, styleName: 'rg-cell-readonly' },
+        { name: 'gugun', fieldName: 'gugun', header: { text: '시군구' }, editable: false, styleName: 'rg-cell-readonly' },
+        { name: 'adstDong', fieldName: 'adstDong', header: { text: '행정구역명' }, editable: false, styleName: 'rg-cell-readonly' },
 
         // 수계 및 권역
-        { name: 'rvbsn', fieldName: 'rvbsn', header: { text: '수계' }, editable: false },
+        { name: 'rvbsn', fieldName: 'rvbsn', header: { text: '수계' }, editable: false, styleName: 'rg-cell-readonly' },
         { name: 'bstrm', fieldName: 'bstrm', header: { text: '지류' } },
 
         // 수계영향권별분류
-        { name: 'mdbsn', fieldName: 'mdbsn', header: { text: '세부단위유역' }, editable: false },
-        { name: 'lgbsn', fieldName: 'lgbsn', header: { text: '중권역' }, editable: false },
-        { name: 'mdmbsn', fieldName: 'mdmbsn', header: { text: '소권역' }, editable: false },
+        { name: 'mdbsn', fieldName: 'mdbsn', header: { text: '세부단위유역' }, editable: false, styleName: 'rg-cell-readonly' },
+        { name: 'lgbsn', fieldName: 'lgbsn', header: { text: '중권역' }, editable: false, styleName: 'rg-cell-readonly' },
+        { name: 'mdmbsn', fieldName: 'mdmbsn', header: { text: '소권역' }, editable: false, styleName: 'rg-cell-readonly' },
 
         // 특별대책지역
         { name: 'speclCntrplnAr', fieldName: 'speclCntrplnAr', header: { text: '특별대책지역' } },
 
         // 행정참고자료인구
-        { name: 'totalPopl', fieldName: 'totalPopl', header: { text: '총인구' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0' },
-        { name: 'poplSm', fieldName: 'poplSm', header: { text: '내국인' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0' },
-        { name: 'frgnrPoplSm', fieldName: 'frgnrPoplSm', header: { text: '외국인' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0' },
+        { name: 'totalPopl', fieldName: 'totalPopl', header: { text: '총인구' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0', styleName: 'rg-cell-readonly' },
+        { name: 'poplSm', fieldName: 'poplSm', header: { text: '내국인' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0', styleName: 'rg-cell-readonly' },
+        { name: 'frgnrPoplSm', fieldName: 'frgnrPoplSm', header: { text: '외국인' }, footer: footerInt, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0', styleName: 'rg-cell-readonly' },
 
         // 행정참고자료면적
-        { name: 'area', fieldName: 'area', header: { text: '행정참고자료면적(㎢)' }, footer: footerDecimal3, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0.000' },
+        { name: 'area', fieldName: 'area', header: { text: '행정참고자료면적(㎢)' }, footer: footerDecimal3, editable: false, valueType: ValueType.NUMBER, dataFormat: '#,##0.000', styleName: 'rg-cell-readonly' },
 
         // 총인구
         {