California Drinking Water Compliance Requirements 2026

August 2026 · Orevant Compliance Intelligence

California has more than 7,000 public water systems regulated by the State Water Resources Control Board (SWRCB) Division of Drinking Water alongside federal EPA requirements. Compliance in 2026 is more demanding than ever — PFAS MCLs are now in effect, LCRR requires active service line inventories, and annual Consumer Confidence Report filings have no deadline flexibility.

PFAS MCLs — April 2027 Deadline

The EPA sets limits of 4 ppt for PFOA and PFOS. California community water systems must complete initial monitoring within 3 years of the rule. A violation triggers public notification and corrective action. California DDW may impose additional requirements beyond the federal baseline.

Lead and Copper Rule Revisions (LCRR)

California systems must complete a full lead service line inventory and submit it to the State DDW. The inventory classifies every service line as lead, galvanized requiring replacement, non-lead, or unknown. California AB 2060 aligns with and in some cases exceeds federal LCRR requirements.

Consumer Confidence Report (CCR)

Community water systems must deliver a CCR to every customer by July 1 each year. Missing the deadline is a direct compliance violation. The report must include all detected contaminants, source water information, and educational language on lead.

How Orevant Maps Your California Obligations

Orevant reads your SDWIS record and maps every applicable federal and California state requirement onto a prioritized compliance roadmap. Every finding links to the actual regulation.

Check My California Water System — Free at orevant.com

FAQ

Does Orevant cover California DDW rules, not just EPA?

Yes. California-specific requirements including AB 2060 are included alongside all applicable federal EPA standards.

How current is the data?

We pull from EPA SDWIS regularly. State updates sync on our monitoring cadence.

What if my system is under 500 connections?

Orevant is built for small systems. Most customers serve under 1,000 connections.

See what Orevant knows about your system

Free water system lookup — search by system name or PWSID. See your EPA profile, current violations, and upcoming deadlines in minutes.

Check My Water System — Free See Pricing

Orevant provides compliance information tools. Content on this page does not constitute legal advice. Compliance determinations should be verified with your state primacy agency.