Lead in Morro Bay, CA Drinking Water
Lead data for Morro Bay, California · 14,125 residents · 2 ZIP codes
Recent water testing in Morro Bay, California has returned Lead readings above detection thresholds.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Lead in Morro Bay Tap Water
Lead has been detected in Morro Bay, California drinking water at a maximum level of 11 ppb — below the EPA action level of 15 ppb (action level).
This analysis covers 14,125 residents across 2 ZIP codes in Morro Bay.
Morro Bay's overall water quality grade is B (77/100).
Is Lead in Morro Bay Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 / NSF 58 and testing your water independently.
Lead Levels by ZIP Code
| ZIP Code | Lead Level | EPA Limit | Status |
|---|---|---|---|
| 93442 | 11 ppb | 15 ppb (action level) | OK |
| 93443 | 11 ppb | 15 ppb (action level) | OK |
Average lead level across Morro Bay: 11 ppb
EPA Violations for Lead in Morro Bay
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2023-08-01 | Lead (Resolved) | Resolved | 93442 |
| 2023-08-01 | Lead (Resolved) | Resolved | 93443 |
Health Effects of Lead
- Brain development delays and reduced IQ in children
- Behavioral problems and learning disabilities
- High blood pressure and kidney damage in adults
- Increased risk of premature birth in pregnant women
Health risk severity: High. Governed by the Lead and Copper Rule Revisions (LCRR/LCRI).
How Lead Gets Into Drinking Water
- Corrosion of lead service lines (pipes connecting water main to home)
- Lead solder in copper plumbing joints (pre-1986 homes)
- Brass fixtures and faucets manufactured before 2014
- Stagnant water that sits in lead-containing pipes overnight
What to Do About Lead in Morro Bay Water
- Install an NSF 53 or NSF 58 certified filter at kitchen sink
- Run cold water for 30 seconds before using for drinking or cooking
- Use cold water only for cooking and preparing formula
- Consider whole-home reverse osmosis if lead service line is present
Look for filters certified under NSF 53 / NSF 58 for lead removal.