diff --git a/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryDriver.java b/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryDriver.java
index 5b138873b399..15058ff01bd9 100644
--- a/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryDriver.java
+++ b/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryDriver.java
@@ -127,35 +127,46 @@ public Connection connect(String url, Properties info) throws SQLException {
     LOG.finest("++enter++");
     try {
       if (acceptsURL(url)) {
-        // strip 'jdbc:' from the URL, add any extra properties
         String connectionUri =
             BigQueryJdbcUrlUtility.appendPropertiesToURL(url.substring(5), this.toString(), info);
+        Level logLevel;
+        String logPath;
+        try {
+          // LogLevel
+          String logLevelStr =
+              BigQueryJdbcUrlUtility.parseUriPropertyWithoutValidation(
+                  connectionUri, BigQueryJdbcUrlUtility.LOG_LEVEL_PROPERTY_NAME);
+          if (logLevelStr == null) {
+            logLevelStr = System.getenv(BigQueryJdbcUrlUtility.LOG_LEVEL_ENV_VAR);
+          }
+          logLevel = BigQueryJdbcUrlUtility.parseLogLevel(logLevelStr);
+
+          // LogPath
+          logPath =
+              BigQueryJdbcUrlUtility.parseUriPropertyWithoutValidation(
+                  connectionUri, BigQueryJdbcUrlUtility.LOG_PATH_PROPERTY_NAME);
+          if (logPath == null) {
+            logPath = System.getenv(BigQueryJdbcUrlUtility.LOG_PATH_ENV_VAR);
+          }
+          if (logPath == null) {
+            logPath = BigQueryJdbcUrlUtility.DEFAULT_LOG_PATH;
+          }
+
+          BigQueryJdbcRootLogger.setLevel(logLevel, logPath);
+        } catch (RuntimeException e) {
+          LOG.log(Level.SEVERE, "Failed to parse connection URL properties", e);
+          throw new BigQueryJdbcException("Failed to parse connection URL properties", e);
+        }
+
+        // Logging starts from here.
         DataSource ds;
         try {
           ds = DataSource.fromUrl(connectionUri);
         } catch (BigQueryJdbcRuntimeException e) {
+          LOG.log(Level.SEVERE, "Failed to parse connection URL", e);
           throw new BigQueryJdbcException("Failed to parse connection URL", e);
         }
 
-        // LogLevel
-        String logLevelStr = ds.getLogLevel();
-        if (logLevelStr == null) {
-          logLevelStr = System.getenv(BigQueryJdbcUrlUtility.LOG_LEVEL_ENV_VAR);
-        }
-        Level logLevel = BigQueryJdbcUrlUtility.parseLogLevel(logLevelStr);
-
-        // LogPath
-        String logPath = ds.getLogPath();
-        if (logPath == null) {
-          logPath = System.getenv(BigQueryJdbcUrlUtility.LOG_PATH_ENV_VAR);
-        }
-        if (logPath == null) {
-          logPath = BigQueryJdbcUrlUtility.DEFAULT_LOG_PATH;
-        }
-
-        BigQueryJdbcRootLogger.setLevel(logLevel, logPath);
-
-        // Logging starts from here.
         BigQueryConnection connection = new BigQueryConnection(connectionUri, ds);
         LOG.info(
             "Driver info : { {Database Product Name : %s}, "
diff --git a/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryJdbcUrlUtility.java b/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryJdbcUrlUtility.java
index c0dfcbd1f4aa..0a19bed7a2c8 100644
--- a/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryJdbcUrlUtility.java
+++ b/java-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryJdbcUrlUtility.java
@@ -662,6 +662,37 @@ static String parseUriProperty(String uri, String property) {
     return map.get(property);
   }
 
+  /**
+   * Parses a URI property from the given URI without validating any other properties.
+   *
+   * @param uri The URI to parse.
+   * @param property The name of the property to parse.
+   * @return The String value of the property, or null if the property is not found.
+   */
+  static String parseUriPropertyWithoutValidation(String uri, String property) {
+    if (uri == null) {
+      return null;
+    }
+    int start = 0;
+    int len = uri.length();
+    while (start < len) {
+      int nextSemi = uri.indexOf(';', start);
+      int end = (nextSemi == -1) ? len : nextSemi;
+
+      int eqIndex = uri.indexOf('=', start);
+      if (eqIndex > start && eqIndex < end) {
+        String key = uri.substring(start, eqIndex).trim();
+        if (key.equalsIgnoreCase(property)) {
+          String value = uri.substring(eqIndex + 1, end);
+          return CharEscapers.decodeUriPath(value.replace("+", "%2B"));
+        }
+      }
+
+      start = end + 1;
+    }
+    return null;
+  }
+
   /**
    * Parses the URL into a map of key-value pairs, validating that all keys are known properties.
    *
diff --git a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/BigQueryDriverTest.java b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/BigQueryDriverTest.java
index 85eb254038f3..8a637ac1e3be 100644
--- a/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/BigQueryDriverTest.java
+++ b/java-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/BigQueryDriverTest.java
@@ -21,11 +21,13 @@
 import java.sql.DriverPropertyInfo;
 import java.sql.SQLException;
 import java.util.Properties;
+import java.util.logging.Level;
 import java.util.logging.Logger;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-public class BigQueryDriverTest {
+public class BigQueryDriverTest extends BigQueryJdbcLoggingBaseTest {
 
   static BigQueryDriver bigQueryDriver;
 
@@ -104,4 +106,63 @@ public void testConnectWithInvalidUrlChainsNoException() throws SQLException {
             new Properties());
     assertThat(connection.isClosed()).isFalse();
   }
+
+  @Test
+  public void testUnknownPropertyWarningIsLogged() throws SQLException {
+    Connection connection =
+        bigQueryDriver.connect(
+            "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+                + "OAuthType=2;OAuthAccessToken=redactedToken;ProjectId=t;LogLevel=3;"
+                + "MyUnknownSetting=Value",
+            new Properties());
+    assertThat(connection.isClosed()).isFalse();
+
+    boolean foundWarning =
+        capturedLogs.stream()
+            .anyMatch(
+                r ->
+                    r.getLevel() == Level.WARNING
+                        && r.getMessage()
+                            .contains("Wrong value or unknown setting: MYUNKNOWNSETTING"));
+    assertThat(foundWarning).isTrue();
+  }
+
+  @Test
+  public void testMalformedUrlExceptionIsLogged() {
+    Assertions.assertThrows(
+        SQLException.class,
+        () ->
+            bigQueryDriver.connect(
+                "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+                    + "OAuthType=2;OAuthAccessToken=redactedToken;ProjectId=t;LogLevel=3;"
+                    + "MalformedPropertyWithoutEquals",
+                new Properties()));
+
+    boolean foundSevere =
+        capturedLogs.stream()
+            .anyMatch(
+                r ->
+                    r.getLevel() == Level.SEVERE
+                        && r.getMessage().contains("Failed to parse connection URL"));
+    assertThat(foundSevere).isTrue();
+  }
+
+  @Test
+  public void testInvalidLogLevelExceptionIsLogged() {
+    Assertions.assertThrows(
+        SQLException.class,
+        () ->
+            bigQueryDriver.connect(
+                "jdbc:bigquery://https://www.googleapis.com/bigquery/v2:443;"
+                    + "OAuthType=2;OAuthAccessToken=redactedToken;ProjectId=t;LogLevel=invalidInt;",
+                new Properties()));
+
+    boolean foundSevere =
+        capturedLogs.stream()
+            .anyMatch(
+                r ->
+                    r.getLevel() == Level.SEVERE
+                        && r.getMessage().contains("Failed to parse connection URL properties"));
+    assertThat(foundSevere).isTrue();
+  }
 }