diff --git a/middleware/apache/monitors-apache.tf b/middleware/apache/monitors-apache.tf
index 07969d5..30b78b1 100644
--- a/middleware/apache/monitors-apache.tf
+++ b/middleware/apache/monitors-apache.tf
@@ -1,3 +1,11 @@
+data "template_file" "filter" {
+  template = "$${filter}"
+
+  vars {
+    filter = "${var.filter_tags_use_defaults == "true" ? format("dd_monitoring:enabled,dd_apache:enabled,env:%s", var.environment) : "${var.filter_tags_custom}"}"
+  }
+}
+
 resource "datadog_monitor" "datadog_apache_process" {
   name    = "[${var.environment}] Can't connect to apache vhost status"
   message = "${coalesce(var.apache_connect_message, var.message)}"
@@ -5,7 +13,7 @@ resource "datadog_monitor" "datadog_apache_process" {
   type = "service check"
 
   query = <<EOF
-    "apache.can_connect".over("dd_apache:enabled","dd_monitoring:enabled","env:${var.environment}").by("host","port").last(6).count_by_status()
+    "apache.can_connect".over("${data.template_file.filter.rendered}").by("host","port").last(6).count_by_status()
   EOF
 
   thresholds = {
diff --git a/middleware/nginx/monitors-nginx.tf b/middleware/nginx/monitors-nginx.tf
index ab55977..395a97a 100644
--- a/middleware/nginx/monitors-nginx.tf
+++ b/middleware/nginx/monitors-nginx.tf
@@ -1,3 +1,11 @@
+data "template_file" "filter" {
+  template = "$${filter}"
+
+  vars {
+    filter = "${var.filter_tags_use_defaults == "true" ? format("dd_monitoring:enabled,dd_nginx:enabled,env:%s", var.environment) : "${var.filter_tags_custom}"}"
+  }
+}
+
 resource "datadog_monitor" "datadog_nginx_process" {
   name    = "[${var.environment}] Can't connect to nginx vhost status"
   message = "${coalesce(var.nginx_connect_message, var.message)}"
@@ -5,7 +13,7 @@ resource "datadog_monitor" "datadog_nginx_process" {
   type = "service check"
 
   query = <<EOF
-    "nginx.can_connect".over("dd_nginx:enabled","dd_monitoring:enabled","env:${var.environment}").by("host","port").last(6).count_by_status()
+    "nginx.can_connect".over("${data.template_file.filter.rendered}").by("host","port").last(6).count_by_status()
   EOF
 
   thresholds = {
diff --git a/middleware/php-fpm/monitors-fpm.tf b/middleware/php-fpm/monitors-fpm.tf
index ef44e3b..5c94645 100644
--- a/middleware/php-fpm/monitors-fpm.tf
+++ b/middleware/php-fpm/monitors-fpm.tf
@@ -47,7 +47,7 @@ resource "datadog_monitor" "datadog_fpm_process" {
   type = "service check"
 
   query = <<EOF
-    "php_fpm.can_ping".over("dd_php_fpm:enabled","dd_monitoring:enabled","env:${var.environment}").by("host","port").last(6).count_by_status()
+    "php_fpm.can_ping".over("${data.template_file.filter.rendered}").by("host","port").last(6).count_by_status()
   EOF
 
   thresholds = {