diff --git a/dom/base/Document.cpp b/dom/base/Document.cpp
index deb86afce641..bb69462d7f29 100644
--- a/dom/base/Document.cpp
+++ b/dom/base/Document.cpp
@@ -1337,9 +1337,6 @@ Document::Document(const char* aContentType)
       mFlushingPendingLinkUpdates(false),
       mMayHaveDOMMutationObservers(false),
       mMayHaveAnimationObservers(false),
-      mHasCSP(false),
-      mHasUnsafeEvalCSP(false),
-      mHasUnsafeInlineCSP(false),
       mHasCSPDeliveredThroughHeader(false),
       mBFCacheDisallowed(false),
       mHasHadDefaultView(false),
@@ -2298,17 +2295,6 @@ Document::~Document() {
 
     // don't report for about: pages
     if (!IsAboutPage()) {
-      // record CSP telemetry on this document
-      if (mHasCSP) {
-        Accumulate(Telemetry::CSP_DOCUMENTS_COUNT, 1);
-      }
-      if (mHasUnsafeInlineCSP) {
-        Accumulate(Telemetry::CSP_UNSAFE_INLINE_DOCUMENTS_COUNT, 1);
-      }
-      if (mHasUnsafeEvalCSP) {
-        Accumulate(Telemetry::CSP_UNSAFE_EVAL_DOCUMENTS_COUNT, 1);
-      }
-
       if (MOZ_UNLIKELY(mMathMLEnabled)) {
         ScalarAdd(Telemetry::ScalarID::MATHML_DOC_COUNT, 1);
       }
diff --git a/dom/base/Document.h b/dom/base/Document.h
index 9b9793bf4ebe..ec2a5bf8a9d8 100644
--- a/dom/base/Document.h
+++ b/dom/base/Document.h
@@ -1066,25 +1066,6 @@ class Document : public nsINode,
    */
   void SetBidiOptions(uint32_t aBidiOptions) { mBidiOptions = aBidiOptions; }
 
-  /**
-   * Set CSP flag for this document.
-   */
-  void SetHasCSP(bool aHasCSP) { mHasCSP = aHasCSP; }
-
-  /**
-   * Set unsafe-inline CSP flag for this document.
-   */
-  void SetHasUnsafeInlineCSP(bool aHasUnsafeInlineCSP) {
-    mHasUnsafeInlineCSP = aHasUnsafeInlineCSP;
-  }
-
-  /**
-   * Set unsafe-eval CSP flag for this document.
-   */
-  void SetHasUnsafeEvalCSP(bool aHasUnsafeEvalCSP) {
-    mHasUnsafeEvalCSP = aHasUnsafeEvalCSP;
-  }
-
   /**
    * Returns true if the document holds a CSP
    * delivered through an HTTP Header.
@@ -4679,15 +4660,6 @@ class Document : public nsINode,
   // document.
   bool mMayHaveAnimationObservers : 1;
 
-  // True if a document load has a CSP attached.
-  bool mHasCSP : 1;
-
-  // True if a document load has a CSP with unsafe-eval attached.
-  bool mHasUnsafeEvalCSP : 1;
-
-  // True if a document load has a CSP with unsafe-inline attached.
-  bool mHasUnsafeInlineCSP : 1;
-
   // True if the document has a CSP delivered throuh a header
   bool mHasCSPDeliveredThroughHeader : 1;
 
diff --git a/dom/security/nsCSPContext.cpp b/dom/security/nsCSPContext.cpp
index bea8da14ee48..9bf025141537 100644
--- a/dom/security/nsCSPContext.cpp
+++ b/dom/security/nsCSPContext.cpp
@@ -462,12 +462,6 @@ nsCSPContext::AppendPolicy(const nsAString& aPolicyString, bool aReportOnly,
     }
 
     mPolicies.AppendElement(policy);
-
-    // set the flag on the document for CSP telemetry
-    nsCOMPtr<Document> doc = do_QueryReferent(mLoadingContext);
-    if (doc) {
-      doc->SetHasCSP(true);
-    }
   }
 
   return NS_OK;
diff --git a/dom/security/nsCSPParser.cpp b/dom/security/nsCSPParser.cpp
index 07d92f6c52ec..81ab272d0875 100644
--- a/dom/security/nsCSPParser.cpp
+++ b/dom/security/nsCSPParser.cpp
@@ -427,11 +427,6 @@ nsCSPBaseSrc* nsCSPParser::keywordSource() {
   }
 
   if (CSP_IsKeyword(mCurToken, CSP_UNSAFE_INLINE)) {
-    nsWeakPtr ctx = mCSPContext->GetLoadingContext();
-    nsCOMPtr<Document> doc = do_QueryReferent(ctx);
-    if (doc) {
-      doc->SetHasUnsafeInlineCSP(true);
-    }
     // make sure script-src only contains 'unsafe-inline' once;
     // ignore duplicates and log warning
     if (mUnsafeInlineKeywordSrc) {
@@ -448,11 +443,6 @@ nsCSPBaseSrc* nsCSPParser::keywordSource() {
   }
 
   if (CSP_IsKeyword(mCurToken, CSP_UNSAFE_EVAL)) {
-    nsWeakPtr ctx = mCSPContext->GetLoadingContext();
-    nsCOMPtr<Document> doc = do_QueryReferent(ctx);
-    if (doc) {
-      doc->SetHasUnsafeEvalCSP(true);
-    }
     mHasAnyUnsafeEval = true;
     return new nsCSPKeywordSrc(CSP_UTF16KeywordToEnum(mCurToken));
   }
diff --git a/toolkit/components/telemetry/Histograms.json b/toolkit/components/telemetry/Histograms.json
index fdc870a8dcd1..d61f0572a7a3 100644
--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@@ -6818,34 +6818,6 @@
     "bug_numbers": [1351147],
     "description": "Server HTTP status code from Safe Browsing ThreatHit report. (0=1xx, 1=200, 2=2xx, 3=204, 4=3xx, 5=400, 6=4xx, 7=403, 8=404, 9=408, 10=413, 11=5xx, 12=502|504|511, 13=503, 14=505, 15=Other)"
   },
-
-  "CSP_DOCUMENTS_COUNT": {
-    "record_in_processes": ["main", "content"],
-    "products": ["firefox", "fennec"],
-    "alert_emails": ["seceng-telemetry@mozilla.com"],
-    "bug_numbers": [1252829],
-    "expires_in_version": "65",
-    "kind": "count",
-    "description": "Number of unique pages that contain a CSP"
-  },
-  "CSP_UNSAFE_INLINE_DOCUMENTS_COUNT": {
-    "record_in_processes": ["main", "content"],
-    "products": ["firefox", "fennec"],
-    "alert_emails": ["seceng-telemetry@mozilla.com"],
-    "bug_numbers": [1252829],
-    "expires_in_version": "65",
-    "kind": "count",
-    "description": "Number of unique pages that contain an unsafe-inline CSP directive"
-  },
-  "CSP_UNSAFE_EVAL_DOCUMENTS_COUNT": {
-    "record_in_processes": ["main", "content"],
-    "products": ["firefox", "fennec"],
-    "alert_emails": ["seceng-telemetry@mozilla.com"],
-    "bug_numbers": [1252829],
-    "expires_in_version": "65",
-    "kind": "count",
-    "description": "Number of unique pages that contain an unsafe-eval CSP directive"
-  },
   "HTTPS_ONLY_MODE_UPGRADE_TIME_MS": {
     "record_in_processes": ["main"],
     "products": ["firefox"],
diff --git a/toolkit/components/telemetry/histogram-allowlists.json b/toolkit/components/telemetry/histogram-allowlists.json
index d7a1049d0d8d..2f5f9a635388 100644
--- a/toolkit/components/telemetry/histogram-allowlists.json
+++ b/toolkit/components/telemetry/histogram-allowlists.json
@@ -982,9 +982,6 @@
     "CHANGES_OF_TARGET_LANGUAGE",
     "COMPONENTS_SHIM_ACCESSED_BY_CONTENT",
     "CONTENT_DOCUMENTS_DESTROYED",
-    "CSP_DOCUMENTS_COUNT",
-    "CSP_UNSAFE_EVAL_DOCUMENTS_COUNT",
-    "CSP_UNSAFE_INLINE_DOCUMENTS_COUNT",
     "CYCLE_COLLECTOR_OOM",
     "CYCLE_COLLECTOR_WORKER_OOM",
     "D3D11_COMPOSITING_FAILURE_ID",