diff --git a/imports/ui/components/Maps/SubsUnion/SubsUnion.js b/imports/ui/components/Maps/SubsUnion/SubsUnion.js
index aaee95c..e179b33 100644
--- a/imports/ui/components/Maps/SubsUnion/SubsUnion.js
+++ b/imports/ui/components/Maps/SubsUnion/SubsUnion.js
@@ -6,17 +6,21 @@
 import { Map } from 'react-leaflet';
 import LGeo from 'leaflet-geodesy';
 import tunion from '@turf/union';
+import ttrunc from '@turf/truncate';
 import { check, Match } from 'meteor/check';
 
 // https://stackoverflow.com/questions/35394577/leaflet-js-union-merge-circles
+const truncOptions = { precision: 6, coordinates: 2 };
 
 function unify(polyList) {
   let unionTemp;
   for (let i = 0; i < polyList.length; i += 1) {
+    const pol = polyList[i].toGeoJSON();
+    const cleanPol = ttrunc(pol, truncOptions);
     if (i === 0) {
-      unionTemp = polyList[i].toGeoJSON();
+      unionTemp = cleanPol;
     } else {
-      unionTemp = tunion(unionTemp, polyList[i].toGeoJSON());
+      unionTemp = tunion(unionTemp, cleanPol);
     }
   }
   return unionTemp;
diff --git a/package-lock.json b/package-lock.json
index 5f4f4a3..5581dfe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,6 +25,23 @@
       "resolved": "https://registry.npmjs.org/@turf/helpers/-/helpers-5.1.5.tgz",
       "integrity": "sha1-FTQFInq5M9AEpbuWQantmZ/L4M8="
     },
+    "@turf/meta": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@turf/meta/-/meta-5.2.0.tgz",
+      "integrity": "sha1-OxrUhe4MOwsXdRMqMsOE1T5LpT0=",
+      "requires": {
+        "@turf/helpers": "5.1.5"
+      }
+    },
+    "@turf/truncate": {
+      "version": "5.1.5",
+      "resolved": "https://registry.npmjs.org/@turf/truncate/-/truncate-5.1.5.tgz",
+      "integrity": "sha1-nu37Oxi6gfLJjT6tCUMcyhiErYk=",
+      "requires": {
+        "@turf/helpers": "5.1.5",
+        "@turf/meta": "5.2.0"
+      }
+    },
     "@turf/union": {
       "version": "5.1.5",
       "resolved": "https://registry.npmjs.org/@turf/union/-/union-5.1.5.tgz",
diff --git a/package.json b/package.json
index e63515b..68b572a 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   "dependencies": {
     "@cleverbeagle/dates": "^0.5.1",
     "@cleverbeagle/seeder": "^1.3.1",
+    "@turf/truncate": "^5.1.5",
     "@turf/union": "^5.1.5",
     "babel-runtime": "^6.26.0",
     "bcrypt": "^1.0.3",