Here are a few options for the description of the WordPress post_tag “水質安全” (Water Quality Safety) in Traditional Chinese, ranging in formality and specificity:

**Option 1 (Concise and General):**

> 關於水質安全的重要議題，包括飲用水、環境水質、以及相關的保護和改善措施。(Concerned with the important issues of water quality safety, including drinking water, environmental water quality, and related protection and improvement measures.)

**Option 2 (Slightly More Detailed):**

> 涵蓋所有與水質安全相關的文章，例如飲用水的安全標準、水污染及其影響、以及如何確保我們周遭水源的清潔與健康。(Encompassing all articles related to water quality safety, such as drinking water safety standards, water pollution and its effects, and how to ensure the cleanliness and health of our surrounding water sources.)

**Option 3 (Emphasis on Education and Action):**

> 理解水質安全，保護你我的健康。這裡收錄關於水質污染、淨水方法、以及我們能採取的行動，來確保安全、清潔的水源。(Understanding water quality safety, protecting our and everyone’s health. This tag includes articles about water pollution, water purification methods, and the actions we can take to ensure a safe and clean water supply.)

**Option 4 (For a Blog with a Focus on Regulation/Policy):**

> 探討水質安全的法規、標準、以及相關政策。包含飲用水安全、污水處理、水資源管理等議題。(Exploring regulations, standards, and related policies for water quality safety. Including issues such as drinking water safety, wastewater treatment, and water resource management.)

**Option 5 (Short and Simple):**

> 關於水質安全的資訊。(Information related to water quality safety.)

**How to Choose the Best Option:**

* **Your Blog’s Tone:** Is your blog formal or informal? Choose an option that matches your style.
* **Your Audience:** Who are you writing for? The more specific the description, the more targeted it will be.
* **Your Content:** Consider the typical articles you’ll tag with “水質安全.” Make sure the description reflects the range of topics you cover.

You can add this description directly within the WordPress tag editor when you are creating or modifying the tag. Good luck!