Regulations on Governing Professional Engineer Certification for Water Intake Constructions, Water Treatment Facilities and Water Supply Facilities of the Reclaimed Water Development Projects Article 7

Professional engineers are obliged to maintain confidentiality and custodial responsibilitiesregarding the worksheets. Except be ordered to provide for reviewing according to laws andecrees or borrowed by the Reclaimed Water Operator, professional engineers shall not leak anyinformation thereof. Professional engineers shall further keep such worksheets for a minimum offive years from the date on which the certification report is submitted; where the professionalengineer organizes a professional engineering consulting firm or is hired by such, or is hiredby a profit-seeking enterprise or entity (not the above-mentioned) which is required by law tohire a licensed professional engineer, the practicing entity shall take custody of the worksheets.
中文原文 再生水開發案取水構造物與水處理設施及供水設施專業技師簽證規則第7條
專業技師對於工作底稿應善盡保密及妥善保管之責任,除依法令提供調閱,或應再生水經營業要求借閱外,不得洩漏任何資料,並應自提出簽證報告之日起,至少保存五年;專業技師組織工程技術顧問公司或受聘於工程技術顧問公司或受聘於前述以外,依法令規定必需聘用領有執業執照之技師之營利事業或機構者,由執業機構負責保管工作底稿。

English translation for reference only; the Chinese text prevails. Not legal advice.