diff --git a/pkg/ingester/errors.go b/pkg/ingester/errors.go
index 6cc00b978e..8d822240ba 100644
--- a/pkg/ingester/errors.go
+++ b/pkg/ingester/errors.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/pkg/errors"
 	"github.com/prometheus/prometheus/pkg/labels"
 	"github.com/weaveworks/common/httpgrpc"
 )
@@ -49,6 +50,11 @@ func makeMetricLimitError(errorType string, labels labels.Labels, err error) err
 	}
 }
 
+func (e *validationError) WrapWithUser(userID string) *validationError {
+	e.err = wrapWithUser(e.err, userID)
+	return e
+}
+
 func (e *validationError) Error() string {
 	if e.err == nil {
 		return e.errorType
@@ -66,3 +72,7 @@ func (e *validationError) WrappedError() error {
 		Body: []byte(e.Error()),
 	})
 }
+
+func wrapWithUser(err error, userID string) error {
+	return errors.Wrapf(err, "user=%s", userID)
+}
diff --git a/pkg/ingester/ingester.go b/pkg/ingester/ingester.go
index 848738b5dc..ffa80ced26 100644
--- a/pkg/ingester/ingester.go
+++ b/pkg/ingester/ingester.go
@@ -308,13 +308,13 @@ func (i *Ingester) Push(ctx old_ctx.Context, req *client.WriteRequest) (*client.
 				continue
 			}
 
-			return nil, err
+			return nil, wrapWithUser(err, userID)
 		}
 	}
 	client.ReuseSlice(req.Timeseries)
 
 	if lastPartialErr != nil {
-		return &client.WriteResponse{}, lastPartialErr.WrappedError()
+		return &client.WriteResponse{}, lastPartialErr.WrapWithUser(userID).WrappedError()
 	}
 	return &client.WriteResponse{}, nil
 }
diff --git a/pkg/ingester/ingester_v2.go b/pkg/ingester/ingester_v2.go
index edcf15ba8b..5c27461ad2 100644
--- a/pkg/ingester/ingester_v2.go
+++ b/pkg/ingester/ingester_v2.go
@@ -89,7 +89,7 @@ func (i *Ingester) v2Push(ctx old_ctx.Context, req *client.WriteRequest) (*clien
 
 	db, err := i.getOrCreateTSDB(userID, false)
 	if err != nil {
-		return nil, err
+		return nil, wrapWithUser(err, userID)
 	}
 
 	// Ensure the ingester shutdown procedure hasn't started
@@ -141,14 +141,14 @@ func (i *Ingester) v2Push(ctx old_ctx.Context, req *client.WriteRequest) (*clien
 
 			// The error looks an issue on our side, so we should rollback
 			if rollbackErr := app.Rollback(); rollbackErr != nil {
-				level.Warn(util.Logger).Log("msg", "failed to rollback on error", "userID", userID, "err", rollbackErr)
+				level.Warn(util.Logger).Log("msg", "failed to rollback on error", "user", userID, "err", rollbackErr)
 			}
 
-			return nil, err
+			return nil, wrapWithUser(err, userID)
 		}
 	}
 	if err := app.Commit(); err != nil {
-		return nil, err
+		return nil, wrapWithUser(err, userID)
 	}
 
 	// Increment metrics only if the samples have been successfully committed.
@@ -160,7 +160,7 @@ func (i *Ingester) v2Push(ctx old_ctx.Context, req *client.WriteRequest) (*clien
 	client.ReuseSlice(req.Timeseries)
 
 	if lastPartialErr != nil {
-		return &client.WriteResponse{}, httpgrpc.Errorf(http.StatusBadRequest, lastPartialErr.Error())
+		return &client.WriteResponse{}, httpgrpc.Errorf(http.StatusBadRequest, wrapWithUser(lastPartialErr, userID).Error())
 	}
 	return &client.WriteResponse{}, nil
 }
diff --git a/pkg/ingester/ingester_v2_test.go b/pkg/ingester/ingester_v2_test.go
index 1c04a5811f..9191442eb7 100644
--- a/pkg/ingester/ingester_v2_test.go
+++ b/pkg/ingester/ingester_v2_test.go
@@ -29,6 +29,7 @@ import (
 func TestIngester_v2Push(t *testing.T) {
 	metricLabelAdapters := []client.LabelAdapter{{Name: labels.MetricName, Value: "test"}}
 	metricLabels := client.FromLabelAdaptersToLabels(metricLabelAdapters)
+	userID := "test"
 
 	tests := map[string]struct {
 		reqs             []*client.WriteRequest
@@ -71,7 +72,7 @@ func TestIngester_v2Push(t *testing.T) {
 					[]client.Sample{{Value: 1, TimestampMs: 9}},
 					client.API),
 			},
-			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, tsdb.ErrOutOfOrderSample.Error()),
+			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, wrapWithUser(tsdb.ErrOutOfOrderSample, userID).Error()),
 			expectedIngested: []client.TimeSeries{
 				{Labels: metricLabelAdapters, Samples: []client.Sample{{Value: 2, TimestampMs: 10}}},
 			},
@@ -95,7 +96,7 @@ func TestIngester_v2Push(t *testing.T) {
 					[]client.Sample{{Value: 1, TimestampMs: 1575043969 - (86400 * 1000)}},
 					client.API),
 			},
-			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, tsdb.ErrOutOfBounds.Error()),
+			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, wrapWithUser(tsdb.ErrOutOfBounds, userID).Error()),
 			expectedIngested: []client.TimeSeries{
 				{Labels: metricLabelAdapters, Samples: []client.Sample{{Value: 2, TimestampMs: 1575043969}}},
 			},
@@ -119,7 +120,7 @@ func TestIngester_v2Push(t *testing.T) {
 					[]client.Sample{{Value: 1, TimestampMs: 1575043969}},
 					client.API),
 			},
-			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, tsdb.ErrAmendSample.Error()),
+			expectedErr: httpgrpc.Errorf(http.StatusBadRequest, wrapWithUser(tsdb.ErrAmendSample, userID).Error()),
 			expectedIngested: []client.TimeSeries{
 				{Labels: metricLabelAdapters, Samples: []client.Sample{{Value: 2, TimestampMs: 1575043969}}},
 			},
@@ -147,7 +148,7 @@ func TestIngester_v2Push(t *testing.T) {
 			defer i.Shutdown()
 			defer cleanup()
 
-			ctx := user.InjectOrgID(context.Background(), "test")
+			ctx := user.InjectOrgID(context.Background(), userID)
 
 			// Wait until the ingester is ACTIVE
 			test.Poll(t, 100*time.Millisecond, ring.ACTIVE, func() interface{} {
@@ -470,7 +471,7 @@ func TestIngester_v2Push_ShouldNotCreateTSDBIfNotInActiveState(t *testing.T) {
 	req := &client.WriteRequest{}
 
 	res, err := i.v2Push(ctx, req)
-	assert.Equal(t, fmt.Errorf(errTSDBCreateIncompatibleState, "PENDING"), err)
+	assert.Equal(t, wrapWithUser(fmt.Errorf(errTSDBCreateIncompatibleState, "PENDING"), userID).Error(), err.Error())
 	assert.Nil(t, res)
 
 	// Check if the TSDB has been created