diff --git a/packages/compass-connect/src/modules/telemetry.js b/packages/compass-connect/src/modules/telemetry.js
index cd32ca3fcb6..d6171ad801f 100644
--- a/packages/compass-connect/src/modules/telemetry.js
+++ b/packages/compass-connect/src/modules/telemetry.js
@@ -49,7 +49,7 @@ async function getHostInformation(host) {
 
 async function getConnectionData(connectionInfo) {
   const {connectionOptions: {connectionString, sshTunnel}} = connectionInfo;
-  const connectionStringData = new ConnectionString(connectionString, {looseValidation: true});
+  const connectionStringData = new ConnectionString(connectionString);
   const hostName = connectionStringData.hosts[0];
   const searchParams = connectionStringData.searchParams;
 
diff --git a/packages/compass-e2e-tests/tests/connection.test.ts b/packages/compass-e2e-tests/tests/connection.test.ts
index f98f63b6fcd..8709e543c74 100644
--- a/packages/compass-e2e-tests/tests/connection.test.ts
+++ b/packages/compass-e2e-tests/tests/connection.test.ts
@@ -403,8 +403,8 @@ describe('SRV connectivity', function () {
     expect(resolutionLogs).to.have.lengthOf(1);
 
     const { from, to, resolutionDetails } = resolutionLogs[0];
-    const fromCS = new ConnectionString(from, { looseValidation: true });
-    const toCS = new ConnectionString(to, { looseValidation: true });
+    const fromCS = new ConnectionString(from);
+    const toCS = new ConnectionString(to);
     fromCS.searchParams.delete('appname');
     toCS.searchParams.delete('appname');
     toCS.hosts.sort();
diff --git a/packages/compass-export-to-language/src/stores/store.js b/packages/compass-export-to-language/src/stores/store.js
index e07b314ea60..1d3ac75fc1b 100644
--- a/packages/compass-export-to-language/src/stores/store.js
+++ b/packages/compass-export-to-language/src/stores/store.js
@@ -34,8 +34,7 @@ function getCurrentlyConnectedUri(dataService) {
 
   try {
     connectionStringUrl = new ConnectionString(
-      dataService.getConnectionOptions().connectionString,
-      {looseValidation: true}
+      dataService.getConnectionOptions().connectionString
     );
   } catch (e) {
     return '<uri>';
diff --git a/packages/compass-metrics/src/modules/rules.js b/packages/compass-metrics/src/modules/rules.js
index 0005fae4ef0..972b015334c 100644
--- a/packages/compass-metrics/src/modules/rules.js
+++ b/packages/compass-metrics/src/modules/rules.js
@@ -6,7 +6,7 @@ const LOCALHOST = /(^localhost)|(^127\.0\.0\.1)/gi;
 
 async function getCloudInfoFromDataService(dataService) {
   try {
-    const url = new ConnectionString(dataService.getConnectionOptions().connectionString, {looseValidation: true});
+    const url = new ConnectionString(dataService.getConnectionOptions().connectionString);
     const firstServerHostname = (url.hosts[0] || '').split(':')[0];
     return await getCloudInfo(firstServerHostname);
   } catch (e) {
diff --git a/packages/connection-model/lib/connect.js b/packages/connection-model/lib/connect.js
index 3dd8fff0070..2a01622a3a5 100644
--- a/packages/connection-model/lib/connect.js
+++ b/packages/connection-model/lib/connect.js
@@ -14,7 +14,7 @@ const {
 const debug = require('debug')('mongodb-connection-model:connect');
 
 function removeGssapiServiceName(url) {
-  const uri = new ConnectionString(url, {looseValidation: true});
+  const uri = new ConnectionString(url);
   uri.searchParams.delete('gssapiServiceName');
   return uri.toString();
 }
diff --git a/packages/connection-model/lib/model.js b/packages/connection-model/lib/model.js
index e6cf1117eb6..8aaa01737bc 100644
--- a/packages/connection-model/lib/model.js
+++ b/packages/connection-model/lib/model.js
@@ -446,7 +446,7 @@ function encodeURIComponentRFC3986(str) {
 }
 
 function setAuthSourceToExternal(url) {
-  const uri = new ConnectionString(url, {looseValidation: true});
+  const uri = new ConnectionString(url);
   uri.searchParams.set('authSource', '$external');
   return uri.toString();
 }
@@ -1118,7 +1118,7 @@ async function createConnectionFromUrl(url) {
       hosts: parsed.hosts,
       // If this is using an srv record, we can just take the original
       // URL before SRV resolution to get the "hostname".
-      hostname: isSrvRecord ? new ConnectionString(unescapedUrl, {looseValidation: true}).hosts[0] : parsed.hosts[0].host,
+      hostname: isSrvRecord ? new ConnectionString(unescapedUrl).hosts[0] : parsed.hosts[0].host,
       auth: parsed.auth,
       isSrvRecord
     },
@@ -1188,7 +1188,7 @@ async function createConnectionFromUrl(url) {
 
   // Since the 3.x parser does not recognize loadBalanced as an option, we have to
   // parse it ourselves.
-  const loadBalanced = new ConnectionString(unescapedUrl, {looseValidation: true}).searchParams.get('loadBalanced');
+  const loadBalanced = new ConnectionString(unescapedUrl).searchParams.get('loadBalanced');
   switch (loadBalanced) {
     case 'true':
       attrs.loadBalanced = true;
diff --git a/packages/data-service/src/connection-secrets.ts b/packages/data-service/src/connection-secrets.ts
index e6f5ae658d0..816309f6164 100644
--- a/packages/data-service/src/connection-secrets.ts
+++ b/packages/data-service/src/connection-secrets.ts
@@ -26,9 +26,7 @@ export function mergeSecrets(
 
   const connectionOptions = connectionInfoWithSecrets.connectionOptions;
 
-  const uri = new ConnectionString(connectionOptions.connectionString, {
-    looseValidation: true,
-  });
+  const uri = new ConnectionString(connectionOptions.connectionString);
   // can remove the proxyPassword addition once we have NODE-3633
   const searchParams = uri.typedSearchParams<
     MongoClientOptions & { proxyPassword?: string }
@@ -85,9 +83,7 @@ export function extractSecrets(connectionInfo: Readonly<ConnectionInfo>): {
   const secrets: ConnectionSecrets = {};
 
   const connectionOptions = connectionInfoWithoutSecrets.connectionOptions;
-  const uri = new ConnectionString(connectionOptions.connectionString, {
-    looseValidation: true,
-  });
+  const uri = new ConnectionString(connectionOptions.connectionString);
   // can remove the proxyPassword addition once we have NODE-3633
   const searchParams = uri.typedSearchParams<
     MongoClientOptions & { proxyPassword?: string }
diff --git a/packages/data-service/src/connection-title.ts b/packages/data-service/src/connection-title.ts
index 035d0ab1b81..eb78a45ca3e 100644
--- a/packages/data-service/src/connection-title.ts
+++ b/packages/data-service/src/connection-title.ts
@@ -7,13 +7,7 @@ export function getConnectionTitle(info: ConnectionInfo): string {
   }
 
   try {
-    const url = new ConnectionString(info.connectionOptions.connectionString, {
-      looseValidation: true,
-    });
-    if (url.isSRV) {
-      return url.hosts[0];
-    }
-
+    const url = new ConnectionString(info.connectionOptions.connectionString);
     return url.hosts.join(',');
   } catch (e) {
     // When parsing a connection for its title fails we default the title.
diff --git a/packages/data-service/src/data-service.ts b/packages/data-service/src/data-service.ts
index a79c7c36f54..0b1104a0671 100644
--- a/packages/data-service/src/data-service.ts
+++ b/packages/data-service/src/data-service.ts
@@ -132,9 +132,7 @@ class DataService extends EventEmitter {
   }
 
   getConnectionString(): ConnectionStringUrl {
-    return new ConnectionStringUrl(this._connectionOptions.connectionString, {
-      looseValidation: true,
-    });
+    return new ConnectionStringUrl(this._connectionOptions.connectionString);
   }
 
   getReadPreference(): ReadPreferenceLike {
diff --git a/packages/data-service/src/legacy/legacy-connection-model.ts b/packages/data-service/src/legacy/legacy-connection-model.ts
index 3a2af3ba2d2..4bc5ed69d93 100644
--- a/packages/data-service/src/legacy/legacy-connection-model.ts
+++ b/packages/data-service/src/legacy/legacy-connection-model.ts
@@ -33,8 +33,7 @@ function deleteCompassAppNameParam(
 
   try {
     connectionStringUrl = new ConnectionString(
-      connectionInfo.connectionOptions.connectionString,
-      { looseValidation: true }
+      connectionInfo.connectionOptions.connectionString
     );
   } catch {
     return connectionInfo;
@@ -262,8 +261,7 @@ function setDirectConnectionForSingleHosts(connectionInfo: ConnectionInfo) {
 
   try {
     connectionStringUrl = new ConnectionString(
-      connectionInfo.connectionOptions.connectionString,
-      { looseValidation: true }
+      connectionInfo.connectionOptions.connectionString
     );
   } catch {
     return connectionInfo;
@@ -296,9 +294,7 @@ function setConnectionStringParam<K extends keyof MongoClientOptions>(
   param: K,
   value: string
 ) {
-  const url = new ConnectionString(connectionOptions.connectionString, {
-    looseValidation: true,
-  });
+  const url = new ConnectionString(connectionOptions.connectionString);
   url.typedSearchParams<MongoClientOptions>().set(param, value);
   connectionOptions.connectionString = url.toString();
 }
@@ -307,9 +303,7 @@ function modelSslPropertiesToConnectionOptions(
   driverOptions: MongoClientOptions,
   connectionOptions: ConnectionOptions
 ): void {
-  const url = new ConnectionString(connectionOptions.connectionString, {
-    looseValidation: true,
-  });
+  const url = new ConnectionString(connectionOptions.connectionString);
   const searchParams = url.typedSearchParams<MongoClientOptions>();
 
   if (driverOptions.sslValidate === false) {
@@ -470,9 +464,7 @@ function convertSslOptionsToLegacyProperties(
   options: ConnectionOptions,
   properties: Partial<LegacyConnectionModelProperties>
 ): void {
-  const url = new ConnectionString(options.connectionString, {
-    looseValidation: true,
-  });
+  const url = new ConnectionString(options.connectionString);
   const searchParams = url.typedSearchParams<MongoClientOptions>();
   const tlsCAFile = searchParams.get('tlsCAFile');
   const tlsCertificateKeyFile = searchParams.get('tlsCertificateKeyFile');
@@ -502,9 +494,7 @@ function convertSslOptionsToLegacyProperties(
 }
 
 function optionsToSslMethod(options: ConnectionOptions): SslMethod {
-  const url = new ConnectionString(options.connectionString, {
-    looseValidation: true,
-  });
+  const url = new ConnectionString(options.connectionString);
   const searchParams = url.typedSearchParams<MongoClientOptions>();
   const tls = searchParams.get('tls') || searchParams.get('ssl');
 
@@ -545,7 +535,7 @@ function optionsToSslMethod(options: ConnectionOptions): SslMethod {
 // connection won't fail and MONGODB-AWS connections will appear
 // as unauthenticated.
 function removeAWSParams(connectionString: string): string {
-  const url = new ConnectionString(connectionString, { looseValidation: true });
+  const url = new ConnectionString(connectionString);
   const searchParams = url.typedSearchParams<MongoClientOptions>();
 
   if (searchParams.get('authMechanism') === 'MONGODB-AWS') {
diff --git a/scripts/import-test-connections.js b/scripts/import-test-connections.js
index 9c1b56c49d9..5ab9d3443b0 100644
--- a/scripts/import-test-connections.js
+++ b/scripts/import-test-connections.js
@@ -25,9 +25,7 @@ const buildConnectionString = (scheme, username, password, host, params) => {
     return '';
   }
 
-  const url = new ConnectionStringUrl(`${scheme}://${host}/admin`, {
-    looseValidation: true,
-  });
+  const url = new ConnectionStringUrl(`${scheme}://${host}/admin`);
   url.username = username;
   url.password = password;
 
@@ -147,8 +145,7 @@ if (COMPASS_TEST_ANALYTICS_NODE_URL) {
 
 if (E2E_TESTS_ATLAS_HOST && E2E_TESTS_ATLAS_X509_PEM_PATH) {
   const url = new ConnectionStringUrl(
-    `mongodb+srv://${E2E_TESTS_ATLAS_HOST || ''}/admin`,
-    { looseValidation: true }
+    `mongodb+srv://${E2E_TESTS_ATLAS_HOST || ''}/admin`
   );
 
   url.searchParams.set('authMechanism', 'MONGODB-X509');