diff --git a/packages/muon/components/inputter/src/inputter-component.js b/packages/muon/components/inputter/src/inputter-component.js
index a84bd06e..d0a44e30 100644
--- a/packages/muon/components/inputter/src/inputter-component.js
+++ b/packages/muon/components/inputter/src/inputter-component.js
@@ -98,6 +98,29 @@ export class Inputter extends ScopedElementsMixin(ValidationMixin(MaskMixin(Muon
     this._helperId = `${this._randomId}-helper`;
   }
 
+  willUpdate(changedProperties) {
+    super.willUpdate(changedProperties);
+
+    let validationEle = this.querySelector(`#${this._id}-validation`);
+    if (!validationEle) {
+      validationEle = document.createElement('div');
+      validationEle.setAttribute('class', 'visually-hidden');
+      validationEle.setAttribute('id', `${this._id}-validation`);
+      this.appendChild(validationEle);
+    }
+    const slottedInput = this._slottedInputs[0];
+    if (this._shouldShowValidation) {
+      validationEle.setAttribute('aria-live', 'polite');
+      slottedInput?.setAttribute('aria-errormessage', `${this._id}-validation`);
+      slottedInput?.setAttribute('aria-invalid', 'true');
+      validationEle.textContent = `${this._isMultiple ? this.heading : this._slottedLabel?.textContent} ${this.validationMessage}`;
+    } else {
+      slottedInput?.removeAttribute('aria-errormessage');
+      slottedInput?.removeAttribute('aria-invalid');
+      validationEle.textContent = '';
+    }
+  }
+
   _onChange(changeEvent) {
     this._pristine = false;
     changeEvent.stopPropagation();
diff --git a/packages/muon/components/inputter/src/inputter-styles.slotted.css b/packages/muon/components/inputter/src/inputter-styles.slotted.css
index c48f2eed..c870e289 100644
--- a/packages/muon/components/inputter/src/inputter-styles.slotted.css
+++ b/packages/muon/components/inputter/src/inputter-styles.slotted.css
@@ -1,6 +1,9 @@
 @import "./inputter-extends.css";
+@import "../../../css/accessibility.css";
 
 light-dom {
+  @extend %global-accessibility;
+
   /* NOTE: targeting Safari only */
   @media not all and (min-resolution: 0.001dpcm) { /* stylelint-disable-line media-feature-range-notation */
     /*
diff --git a/packages/muon/mixins/validation-mixin.js b/packages/muon/mixins/validation-mixin.js
index dd44d9c9..3f4ae47e 100644
--- a/packages/muon/mixins/validation-mixin.js
+++ b/packages/muon/mixins/validation-mixin.js
@@ -221,6 +221,10 @@ export const ValidationMixin = dedupeMixin((superClass) =>
       }).join(' ');
     }
 
+    get _shouldShowValidation() {
+      return this.showMessage && this.isDirty && !!this.validationMessage;
+    }
+
     /**
      * A method to get validation message template.
      *
@@ -229,12 +233,11 @@ export const ValidationMixin = dedupeMixin((superClass) =>
      * @override
      */
     get _addValidationMessage() {
-      if (this.showMessage && this.isDirty && this.validationMessage) {
+      if (this._shouldShowValidation) {
         return html`
           <div class="validation">
             ${this._addValidationIcon}
-            <div class="message" role="alert" aria-live="assertive">
-              <div class="visually-hidden">${this._isMultiple ? this.heading : this._slottedLabel?.textContent}</div>
+            <div class="message">
               ${this.validationMessage}
             </div>
           </div>`;
diff --git a/packages/muon/tests/components/inputter/inputter.test.js b/packages/muon/tests/components/inputter/inputter.test.js
index e8a43b01..ed489efe 100644
--- a/packages/muon/tests/components/inputter/inputter.test.js
+++ b/packages/muon/tests/components/inputter/inputter.test.js
@@ -177,8 +177,13 @@ describe('Inputter', () => {
 
       const validationMessage = shadowRoot.querySelector('.validation .message');
       expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Length must be between 8 and 20 characters.', 'validation message has correct value');
+      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Length must be between 8 and 20 characters.', 'validation message has correct value');
 
+      const validationId = `${inputter._id}-validation`;
+      const validationLightDOM = inputter.querySelector(`#${validationId}`);
+      // eslint-disable-next-line no-unused-expressions
+      expect(validationLightDOM).to.be.ok;
+      expect(inputElement.getAttribute('aria-errormessage')).to.be.equal(validationId);
       const validationIcon = shadowRoot.querySelector('.validation .icon');
       expect(validationIcon).to.not.be.null; // eslint-disable-line no-unused-expressions
       expect(validationIcon.name).to.equal('exclamation-circle', 'validation icon has correct value');
@@ -210,7 +215,7 @@ describe('Inputter', () => {
 
       const validationMessage = shadowRoot.querySelector('.validation .message');
       expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Length must be between 8 and 20 characters.', 'validation message has correct value');
+      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Length must be between 8 and 20 characters.', 'validation message has correct value');
 
       const validationIcon = shadowRoot.querySelector('.validation .icon');
       expect(validationIcon).to.not.be.null; // eslint-disable-line no-unused-expressions
@@ -251,7 +256,7 @@ describe('Inputter', () => {
 
       const validationMessage = shadowRoot.querySelector('.validation .message');
       expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
       const validationIcon = shadowRoot.querySelector('.validation .icon');
       expect(validationIcon).to.not.be.null; // eslint-disable-line no-unused-expressions
@@ -309,7 +314,7 @@ describe('Inputter', () => {
 
       const validationMessage = shadowRoot.querySelector('.validation .message');
       expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
       const validationIcon = shadowRoot.querySelector('.validation .icon');
       expect(validationIcon).to.not.be.null; // eslint-disable-line no-unused-expressions
@@ -319,7 +324,7 @@ describe('Inputter', () => {
       await inputter.updateComplete;
       expect(changeEventSpy.callCount).to.equal(3, '`change` event fired');
       expect(changeEventSpy.lastCall.args[0].detail.value).to.equal('12-3', '`change` event has value `12-3`');
-      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Length must be at least 4 characters.', 'validation message has correct value');
+      expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Length must be at least 4 characters.', 'validation message has correct value');
 
       inputMask = shadowRoot.querySelector('.input-mask');
       expect(inputMask.textContent).to.be.equal('    0', '`input-mask` has correct value');
@@ -415,7 +420,7 @@ describe('Inputter', () => {
       expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
 
 
-      expect(validationMessage.textContent?.trim().replace(/\s\s+/g, ' ')).to.equal('What is your heating source? This field is required.', 'validation message has correct value');
+      expect(validationMessage.textContent?.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
       const validationIcon = shadowRoot.querySelector('.validation .icon');
       expect(validationIcon).to.not.be.null; // eslint-disable-line no-unused-expressions
diff --git a/packages/muon/tests/mixins/validation.test.js b/packages/muon/tests/mixins/validation.test.js
index 56344bb8..f65e8a5e 100644
--- a/packages/muon/tests/mixins/validation.test.js
+++ b/packages/muon/tests/mixins/validation.test.js
@@ -103,7 +103,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     let validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
     await fillIn(inputElement, 'hello world');
     expect(formElement.value).to.equal('hello world', '`value` property has value `hello world`');
@@ -113,7 +113,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Length must be between 5 and 10 characters.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Length must be between 5 and 10 characters.', 'validation message has correct value');
   });
 
   it('text validation on input', async () => {
@@ -147,7 +147,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     let validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
     await fillIn(inputElement, 'hello world', 'input');
     expect(formElement.value).to.equal('hello world', '`value` property has value `hello world`');
@@ -157,7 +157,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Length must be between 5 and 10 characters.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Length must be between 5 and 10 characters.', 'validation message has correct value');
   });
 
   it('text native validation', async () => {
@@ -191,7 +191,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     let validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ').toLowerCase()).contains('input label this field is required', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ').toLowerCase()).contains('this field is required', 'validation message has correct value');
 
     await fillIn(inputElement, 'test validation');
     expect(formElement.value).to.equal('test validation', '`value` property has value `test validation`');
@@ -234,7 +234,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     let validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
     await fillIn(inputElement, '56');
     expect(formElement.value).to.equal('56', '`value` property has value `56`');
@@ -244,7 +244,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label match the pattern.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('match the pattern.', 'validation message has correct value');
 
   });
 
@@ -309,7 +309,7 @@ describe('form-element-validation', () => {
     await formElement.updateComplete;
     const validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('What is your heating source? This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
   });
 
   it('checkbox validation', async () => {
@@ -341,7 +341,7 @@ describe('form-element-validation', () => {
     expect(changeEventSpy.callCount).to.equal(1, '`change` event fired');
     const validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('What is your heating source? This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
   });
 
   it('select validation', async () => {
@@ -373,7 +373,7 @@ describe('form-element-validation', () => {
     expect(changeEventSpy.callCount).to.equal(1, '`change` event fired');
     const validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('What is your heating source? This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
   });
 
   it('date validation', async () => {
@@ -408,7 +408,7 @@ describe('form-element-validation', () => {
 
     let validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label This field is required.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('This field is required.', 'validation message has correct value');
 
     await fillIn(inputElement, '10/11/2021');
     await formElement.updateComplete;
@@ -418,6 +418,6 @@ describe('form-element-validation', () => {
 
     validationMessage = shadowRoot.querySelector('.validation');
     expect(validationMessage).to.not.be.null; // eslint-disable-line no-unused-expressions
-    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('input label Date must be on or after 11/11/2021.', 'validation message has correct value');
+    expect(validationMessage.textContent.trim().replace(/\s\s+/g, ' ')).to.equal('Date must be on or after 11/11/2021.', 'validation message has correct value');
   });
 });