California Laws|Section 337.5.

                                                
337.5.  
Within 10 years:
(a) An action upon any general obligation bonds or coupons, not secured in whole or in part by a lien on real property, issued by any county, city and county, municipal corporation, district (including school districts), or other political subdivision of the State of California.
(b) An action upon a judgment or decree of any court of the United States or of any state within the United States.