California Code, Water Code - WAT § 13611

(c)(1) Civil liability may be administratively imposed by a regional board in accordance with Article 2.5 (commencing with Section 13323) of Chapter 5 for a violation described in subdivision (b) in an amount that does not exceed one thousand dollars ($1,000) for each day in which the violation occurs.

(2) Civil liability may be imposed by the superior court in accordance with Article 5 (commencing with Section 13350) and Article 6 (commencing with Section 13360) of Chapter 5 for a violation described in subdivision (b) in an amount that is not less than five hundred dollars ($500), nor more than five thousand dollars ($5,000), for each day in which the violation occurs.