diff --git a/yarn-project/aztec-node/src/aztec-node/aztec-node.ts b/yarn-project/aztec-node/src/aztec-node/aztec-node.ts
index f6258e855c8..4cf78477af5 100644
--- a/yarn-project/aztec-node/src/aztec-node/aztec-node.ts
+++ b/yarn-project/aztec-node/src/aztec-node/aztec-node.ts
@@ -142,6 +142,6 @@ export class AztecNode {
   }
 
   public getDataTreePath(leafIndex: bigint): Promise<SiblingPath> {
-    return this.merkleTreeDB.getSiblingPath(MerkleTreeId.DATA_TREE, leafIndex, false);
+    return this.merkleTreeDB.getSiblingPath(MerkleTreeId.PRIVATE_DATA_TREE, leafIndex, false);
   }
 }
diff --git a/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.test.ts b/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.test.ts
index 982a73f1b7d..d54812c1d20 100644
--- a/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.test.ts
+++ b/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.test.ts
@@ -83,7 +83,7 @@ describe('sequencer/circuit_block_builder', () => {
 
   const updateRootTrees = async () => {
     for (const [newTree, rootTree] of [
-      [MerkleTreeId.DATA_TREE, MerkleTreeId.DATA_TREE_ROOTS_TREE],
+      [MerkleTreeId.PRIVATE_DATA_TREE, MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE],
       [MerkleTreeId.CONTRACT_TREE, MerkleTreeId.CONTRACT_TREE_ROOTS_TREE],
     ] as const) {
       const newTreeInfo = await expectsDb.getTreeInfo(newTree);
@@ -95,7 +95,7 @@ describe('sequencer/circuit_block_builder', () => {
   const updateExpectedTreesFromTxs = async (txs: PrivateTx[]) => {
     const newContracts = flatMap(txs, tx => tx.data.end.newContracts.map(n => computeContractLeaf(wasm, n)));
     for (const [tree, leaves] of [
-      [MerkleTreeId.DATA_TREE, flatMap(txs, tx => tx.data.end.newCommitments.map(l => l.toBuffer()))],
+      [MerkleTreeId.PRIVATE_DATA_TREE, flatMap(txs, tx => tx.data.end.newCommitments.map(l => l.toBuffer()))],
       [MerkleTreeId.CONTRACT_TREE, newContracts.map(x => x.toBuffer())],
       [MerkleTreeId.NULLIFIER_TREE, flatMap(txs, tx => tx.data.end.newNullifiers.map(l => l.toBuffer()))],
     ] as const) {
@@ -110,7 +110,7 @@ describe('sequencer/circuit_block_builder', () => {
 
   const setTxHistoricTreeRoots = async (tx: PrivateTx) => {
     for (const [name, id] of [
-      ['privateDataTreeRoot', MerkleTreeId.DATA_TREE],
+      ['privateDataTreeRoot', MerkleTreeId.PRIVATE_DATA_TREE],
       ['contractTreeRoot', MerkleTreeId.CONTRACT_TREE],
       ['nullifierTreeRoot', MerkleTreeId.NULLIFIER_TREE],
     ] as const) {
@@ -136,24 +136,24 @@ describe('sequencer/circuit_block_builder', () => {
       await updateExpectedTreesFromTxs(txsLeft);
       baseRollupOutputLeft.endContractTreeSnapshot = await getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
       baseRollupOutputLeft.endNullifierTreeSnapshot = await getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
-      baseRollupOutputLeft.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.DATA_TREE);
+      baseRollupOutputLeft.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
 
       // Same for the two txs on the right
       await updateExpectedTreesFromTxs(txsRight);
       baseRollupOutputRight.endContractTreeSnapshot = await getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
       baseRollupOutputRight.endNullifierTreeSnapshot = await getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
-      baseRollupOutputRight.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.DATA_TREE);
+      baseRollupOutputRight.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
 
       // And update the root trees now to create proper output to the root rollup circuit
       await updateRootTrees();
       rootRollupOutput.endContractTreeSnapshot = await getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
       rootRollupOutput.endNullifierTreeSnapshot = await getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
-      rootRollupOutput.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.DATA_TREE);
+      rootRollupOutput.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
       rootRollupOutput.endTreeOfHistoricContractTreeRootsSnapshot = await getTreeSnapshot(
         MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
       );
       rootRollupOutput.endTreeOfHistoricPrivateDataTreeRootsSnapshot = await getTreeSnapshot(
-        MerkleTreeId.DATA_TREE_ROOTS_TREE,
+        MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
       );
 
       // Actually build a block!
diff --git a/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.ts b/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.ts
index 803b99ac52f..8eb3f00d89e 100644
--- a/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.ts
+++ b/yarn-project/sequencer-client/src/block_builder/circuit_block_builder.ts
@@ -91,10 +91,10 @@ export class CircuitBlockBuilder implements BlockBuilder {
       startTreeOfHistoricContractTreeRootsSnapshot,
     ] = await Promise.all(
       [
-        MerkleTreeId.DATA_TREE,
+        MerkleTreeId.PRIVATE_DATA_TREE,
         MerkleTreeId.NULLIFIER_TREE,
         MerkleTreeId.CONTRACT_TREE,
-        MerkleTreeId.DATA_TREE_ROOTS_TREE,
+        MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
         MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
       ].map(tree => this.getTreeSnapshot(tree)),
     );
@@ -235,7 +235,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
   // Updates our roots trees with the new generated trees after the rollup updates
   protected async updateRootTrees() {
     for (const [newTree, rootTree] of [
-      [MerkleTreeId.DATA_TREE, MerkleTreeId.DATA_TREE_ROOTS_TREE],
+      [MerkleTreeId.PRIVATE_DATA_TREE, MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE],
       [MerkleTreeId.CONTRACT_TREE, MerkleTreeId.CONTRACT_TREE_ROOTS_TREE],
     ] as const) {
       const newTreeInfo = await this.db.getTreeInfo(newTree);
@@ -247,7 +247,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
   protected async validateTrees(rollupOutput: BaseOrMergeRollupPublicInputs | RootRollupPublicInputs) {
     await Promise.all([
       this.validateTree(rollupOutput, MerkleTreeId.CONTRACT_TREE, 'Contract'),
-      this.validateTree(rollupOutput, MerkleTreeId.DATA_TREE, 'PrivateData'),
+      this.validateTree(rollupOutput, MerkleTreeId.PRIVATE_DATA_TREE, 'PrivateData'),
       this.validateTree(rollupOutput, MerkleTreeId.NULLIFIER_TREE, 'Nullifier'),
     ]);
   }
@@ -257,7 +257,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
     await Promise.all([
       this.validateTrees(rootOutput),
       this.validateRootTree(rootOutput, MerkleTreeId.CONTRACT_TREE_ROOTS_TREE, 'Contract'),
-      this.validateRootTree(rootOutput, MerkleTreeId.DATA_TREE_ROOTS_TREE, 'PrivateData'),
+      this.validateRootTree(rootOutput, MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE, 'PrivateData'),
     ]);
   }
 
@@ -326,7 +326,9 @@ export class CircuitBlockBuilder implements BlockBuilder {
     const newHistoricContractDataTreeRootSiblingPath = await getRootTreeSiblingPath(
       MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
     );
-    const newHistoricPrivateDataTreeRootSiblingPath = await getRootTreeSiblingPath(MerkleTreeId.DATA_TREE_ROOTS_TREE);
+    const newHistoricPrivateDataTreeRootSiblingPath = await getRootTreeSiblingPath(
+      MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
+    );
 
     return RootRollupInputs.from({
       previousRollupData,
@@ -398,7 +400,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
   protected getDataMembershipWitnessFor(tx: PrivateTx) {
     return this.getMembershipWitnessFor(
       tx.data.constants.historicTreeRoots.privateDataTreeRoot,
-      MerkleTreeId.DATA_TREE_ROOTS_TREE,
+      MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
       PRIVATE_DATA_TREE_ROOTS_TREE_HEIGHT,
     );
   }
@@ -410,7 +412,9 @@ export class CircuitBlockBuilder implements BlockBuilder {
       privateKernelVkTreeRoot: FUTURE_FR,
       publicKernelVkTreeRoot: FUTURE_FR,
       startTreeOfHistoricContractTreeRootsSnapshot: await this.getTreeSnapshot(MerkleTreeId.CONTRACT_TREE_ROOTS_TREE),
-      startTreeOfHistoricPrivateDataTreeRootsSnapshot: await this.getTreeSnapshot(MerkleTreeId.DATA_TREE_ROOTS_TREE),
+      startTreeOfHistoricPrivateDataTreeRootsSnapshot: await this.getTreeSnapshot(
+        MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
+      ),
       treeOfHistoricL1ToL2MsgTreeRootsSnapshot: new AppendOnlyTreeSnapshot(DELETE_FR, DELETE_NUM),
     });
   }
@@ -685,7 +689,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
     const constants = await this.getConstantBaseRollupData();
     const startNullifierTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
     const startContractTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
-    const startPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.DATA_TREE);
+    const startPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
 
     // Update the contract and data trees with the new items being inserted to get the new roots
     // that will be used by the next iteration of the base rollup circuit, skipping the empty ones
@@ -697,7 +701,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
       newContracts.map(x => x.toBuffer()),
     );
 
-    await this.db.appendLeaves(MerkleTreeId.DATA_TREE, newCommitments);
+    await this.db.appendLeaves(MerkleTreeId.PRIVATE_DATA_TREE, newCommitments);
 
     // Update the nullifier tree, capturing the low nullifier info for each individual operation
     const newNullifiers = [...tx1.data.end.newNullifiers, ...tx2.data.end.newNullifiers];
@@ -713,7 +717,7 @@ export class CircuitBlockBuilder implements BlockBuilder {
 
     // Get the subtree sibling paths for the circuit
     const newCommitmentsSubtreeSiblingPath = await this.getSubtreeSiblingPath(
-      MerkleTreeId.DATA_TREE,
+      MerkleTreeId.PRIVATE_DATA_TREE,
       BaseRollupInputs.PRIVATE_DATA_SUBTREE_HEIGHT,
     );
     const newContractsSubtreeSiblingPath = await this.getSubtreeSiblingPath(
diff --git a/yarn-project/sequencer-client/src/block_builder/standalone_block_builder.ts b/yarn-project/sequencer-client/src/block_builder/standalone_block_builder.ts
index 2a7d4400be0..1fca04dd540 100644
--- a/yarn-project/sequencer-client/src/block_builder/standalone_block_builder.ts
+++ b/yarn-project/sequencer-client/src/block_builder/standalone_block_builder.ts
@@ -31,11 +31,11 @@ export class StandaloneBlockBuilder implements BlockBuilder {
   constructor(private db: MerkleTreeOperations, private log = createDebugLogger('aztec:block_builder')) {}
 
   async buildL2Block(blockNumber: number, txs: PrivateTx[]): Promise<[L2Block, Proof]> {
-    const startPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.DATA_TREE);
+    const startPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
     const startNullifierTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
     const startContractTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
     const startTreeOfHistoricPrivateDataTreeRootsSnapshot = await this.getTreeSnapshot(
-      MerkleTreeId.DATA_TREE_ROOTS_TREE,
+      MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
     );
     const startTreeOfHistoricContractTreeRootsSnapshot = await this.getTreeSnapshot(
       MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
@@ -47,10 +47,12 @@ export class StandaloneBlockBuilder implements BlockBuilder {
 
     await this.updateRootTrees();
 
-    const endPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.DATA_TREE);
+    const endPrivateDataTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
     const endNullifierTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
     const endContractTreeSnapshot = await this.getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
-    const endTreeOfHistoricPrivateDataTreeRootsSnapshot = await this.getTreeSnapshot(MerkleTreeId.DATA_TREE_ROOTS_TREE);
+    const endTreeOfHistoricPrivateDataTreeRootsSnapshot = await this.getTreeSnapshot(
+      MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
+    );
     const endTreeOfHistoricContractTreeRootsSnapshot = await this.getTreeSnapshot(
       MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
     );
@@ -89,7 +91,7 @@ export class StandaloneBlockBuilder implements BlockBuilder {
     );
 
     for (let i = 0; i < KERNEL_NEW_COMMITMENTS_LENGTH; i++) {
-      await this.db.appendLeaves(MerkleTreeId.DATA_TREE, [dataTreeLeaves[i]]);
+      await this.db.appendLeaves(MerkleTreeId.PRIVATE_DATA_TREE, [dataTreeLeaves[i]]);
     }
     for (let i = 0; i < KERNEL_NEW_NULLIFIERS_LENGTH; i++) {
       await this.db.appendLeaves(MerkleTreeId.NULLIFIER_TREE, [nullifierTreeLeaves[i]]);
@@ -100,9 +102,9 @@ export class StandaloneBlockBuilder implements BlockBuilder {
   }
 
   private async updateRootTrees() {
-    const newDataTreeInfo = await this.getTreeSnapshot(MerkleTreeId.DATA_TREE);
+    const newDataTreeInfo = await this.getTreeSnapshot(MerkleTreeId.PRIVATE_DATA_TREE);
     const newContractsTreeInfo = await this.getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
     await this.db.appendLeaves(MerkleTreeId.CONTRACT_TREE_ROOTS_TREE, [newContractsTreeInfo.root.toBuffer()]);
-    await this.db.appendLeaves(MerkleTreeId.DATA_TREE_ROOTS_TREE, [newDataTreeInfo.root.toBuffer()]);
+    await this.db.appendLeaves(MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE, [newDataTreeInfo.root.toBuffer()]);
   }
 }
diff --git a/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.ts b/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.ts
index cb55070587f..bdc57ce53d5 100644
--- a/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.ts
+++ b/yarn-project/world-state/src/synchroniser/server_world_state_synchroniser.ts
@@ -126,14 +126,14 @@ export class ServerWorldStateSynchroniser implements WorldStateSynchroniser {
     const rootChecks = await Promise.all([
       compareRoot(l2Block.endContractTreeSnapshot.root.toBuffer(), MerkleTreeId.CONTRACT_TREE),
       compareRoot(l2Block.endNullifierTreeSnapshot.root.toBuffer(), MerkleTreeId.NULLIFIER_TREE),
-      compareRoot(l2Block.endPrivateDataTreeSnapshot.root.toBuffer(), MerkleTreeId.DATA_TREE),
+      compareRoot(l2Block.endPrivateDataTreeSnapshot.root.toBuffer(), MerkleTreeId.PRIVATE_DATA_TREE),
       compareRoot(
         l2Block.endTreeOfHistoricContractTreeRootsSnapshot.root.toBuffer(),
         MerkleTreeId.CONTRACT_TREE_ROOTS_TREE,
       ),
       compareRoot(
         l2Block.endTreeOfHistoricPrivateDataTreeRootsSnapshot.root.toBuffer(),
-        MerkleTreeId.DATA_TREE_ROOTS_TREE,
+        MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE,
       ),
     ]);
     const ourBlock = rootChecks.every(x => x);
@@ -147,7 +147,7 @@ export class ServerWorldStateSynchroniser implements WorldStateSynchroniser {
       for (const [tree, leaves] of [
         [MerkleTreeId.CONTRACT_TREE, l2Block.newContracts],
         [MerkleTreeId.NULLIFIER_TREE, l2Block.newNullifiers],
-        [MerkleTreeId.DATA_TREE, l2Block.newCommitments],
+        [MerkleTreeId.PRIVATE_DATA_TREE, l2Block.newCommitments],
       ] as const) {
         await this.merkleTreeDb.appendLeaves(
           tree,
@@ -156,7 +156,7 @@ export class ServerWorldStateSynchroniser implements WorldStateSynchroniser {
       }
 
       for (const [newTree, rootTree] of [
-        [MerkleTreeId.DATA_TREE, MerkleTreeId.DATA_TREE_ROOTS_TREE],
+        [MerkleTreeId.PRIVATE_DATA_TREE, MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE],
         [MerkleTreeId.CONTRACT_TREE, MerkleTreeId.CONTRACT_TREE_ROOTS_TREE],
       ] as const) {
         const newTreeInfo = await this.merkleTreeDb.getTreeInfo(newTree, true);
diff --git a/yarn-project/world-state/src/world-state-db/index.ts b/yarn-project/world-state/src/world-state-db/index.ts
index 6dddfdd8024..ec634207215 100644
--- a/yarn-project/world-state/src/world-state-db/index.ts
+++ b/yarn-project/world-state/src/world-state-db/index.ts
@@ -10,8 +10,8 @@ export enum MerkleTreeId {
   CONTRACT_TREE = 0,
   CONTRACT_TREE_ROOTS_TREE = 1,
   NULLIFIER_TREE = 2,
-  DATA_TREE = 3,
-  DATA_TREE_ROOTS_TREE = 4,
+  PRIVATE_DATA_TREE = 3,
+  PRIVATE_DATA_TREE_ROOTS_TREE = 4,
   PUBLIC_DATA_TREE = 5,
 }
 
diff --git a/yarn-project/world-state/src/world-state-db/merkle_trees.ts b/yarn-project/world-state/src/world-state-db/merkle_trees.ts
index 96223951994..9814b377c99 100644
--- a/yarn-project/world-state/src/world-state-db/merkle_trees.ts
+++ b/yarn-project/world-state/src/world-state-db/merkle_trees.ts
@@ -74,14 +74,14 @@ export class MerkleTrees implements MerkleTreeDb {
       StandardTree,
       this.db,
       hasher,
-      `${MerkleTreeId[MerkleTreeId.DATA_TREE]}`,
+      `${MerkleTreeId[MerkleTreeId.PRIVATE_DATA_TREE]}`,
       PRIVATE_DATA_TREE_HEIGHT,
     );
     const privateDataTreeRootsTree: AppendOnlyTree = await newTree(
       StandardTree,
       this.db,
       hasher,
-      `${MerkleTreeId[MerkleTreeId.DATA_TREE_ROOTS_TREE]}`,
+      `${MerkleTreeId[MerkleTreeId.PRIVATE_DATA_TREE_ROOTS_TREE]}`,
       PRIVATE_DATA_TREE_ROOTS_TREE_HEIGHT,
     );
     const publicDataTree: UpdateOnlyTree = await newTree(