diff --git a/src/admin-geographic-zone-population/admin-geographic-zone-population.service.js b/src/admin-geographic-zone-population/admin-geographic-zone-population.service.js
index 89da5bab..c563dffc 100644
--- a/src/admin-geographic-zone-population/admin-geographic-zone-population.service.js
+++ b/src/admin-geographic-zone-population/admin-geographic-zone-population.service.js
@@ -23,17 +23,22 @@
 
     geoZoneCatchmentPopulationService.$inject = [
         'featureFlagService',
-        'GeographicLevelService',
+        'GeoLevelResource',
         'CATCHMENT_POPULATION_CALC_AUTO_FEATURE_FLAG'
     ];
 
     function geoZoneCatchmentPopulationService(
         featureFlagService,
-        GeographicLevelService,
+        GeoLevelResource,
         CATCHMENT_POPULATION_CALC_AUTO_FEATURE_FLAG
     ) {
         const isCatchmentPopulationAutoCalc = featureFlagService.get(CATCHMENT_POPULATION_CALC_AUTO_FEATURE_FLAG);
-        const lowestLevel = GeographicLevelService.getTheLowestLevelNumber();
+        let lowestLevel = null;
+
+        new GeoLevelResource().getTheLowestGeoLevel()
+            .then(function(geoLevel) {
+                lowestLevel = geoLevel.levelNumber;
+            });
 
         return {
             isEditable: function(geographicZone) {
diff --git a/src/referencedata-geographic-level/geo-level-resource.js b/src/referencedata-geographic-level/geo-level-resource.js
index 63701dc9..bbe44f9e 100644
--- a/src/referencedata-geographic-level/geo-level-resource.js
+++ b/src/referencedata-geographic-level/geo-level-resource.js
@@ -33,6 +33,24 @@
             });
         }
 
+        GeoLevelResource.prototype.getTheLowestGeoLevel = getTheLowestGeoLevel;
+
         return GeoLevelResource;
+
+        function getTheLowestGeoLevel() {
+            return new Promise(function(resolve) {
+                new GeoLevelResource().query()
+                    .then(function(resource) {
+                        const lowestGeoLevel = resource.content.reduce(function(lowestGeoLevel, geoLevel) {
+                            // Compare and keep the one with the highest `levelNumber` value
+                            return geoLevel.levelNumber > lowestGeoLevel.levelNumber
+                                ? geoLevel : lowestGeoLevel;
+                        });
+
+                        resolve(lowestGeoLevel);
+                    });
+            });
+        }
+
     }
 })();
diff --git a/src/referencedata-geographic-level/geographic-level.service.js b/src/referencedata-geographic-level/geographic-level.service.js
deleted file mode 100644
index 221d896a..00000000
--- a/src/referencedata-geographic-level/geographic-level.service.js
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * This program is part of the OpenLMIS logistics management information system platform software.
- * Copyright © 2017 VillageReach
- *
- * This program is free software: you can redistribute it and/or modify it under the terms
- * of the GNU Affero General Public License as published by the Free Software Foundation, either
- * version 3 of the License, or (at your option) any later version.
- *  
- * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
- * See the GNU Affero General Public License for more details. You should have received a copy of
- * the GNU Affero General Public License along with this program. If not, see
- * http://www.gnu.org/licenses.  For additional information contact info@OpenLMIS.org. 
- */
-
-(function() {
-
-    'use strict';
-
-    angular
-        .module('referencedata-geographic-level')
-        .service('GeographicLevelService', GeographicLevelService);
-
-    /**
-     * @ngdoc object
-     * @name referencedata-geographic-level.GEOGRAPHIC_LEVEL
-     * 
-     * @description
-     * This constant provides the geographic level number.
-     */
-    var GEOGRAPHIC_LEVEL = {
-        NATIONAL: 1,
-        PROVINCE: 2,
-        DISTRICT: 3
-    };
-
-    function GeographicLevelService() {
-        return {
-            /**
-             * @ngdoc function
-             * @name referencedata-geographic-level.service:getTheLowestLevelNumber
-             * 
-             * @description
-             * This function returns the lowest level number. Lowest in this case means the most detailed level.
-             */
-            getTheLowestLevelNumber: function() {
-                return GEOGRAPHIC_LEVEL.DISTRICT;
-            }
-        };
-    }
-
-})();