Corp. Code, § 14304

If a shareholder of a mutual water company has not timely paid any rate, charge, or assessment arising from, or related to, water service provided by the mutual water company to the shareholder’s property, and if authorized by its articles or bylaws, then after providing at least 20 days’ written notice to the shareholder, the board of directors of the mutual water company may authorize the recording of a notice of lien against that shareholder’s property to secure the collection of the rates, charges, and assessments owed to the mutual water company by the shareholder.