Lead in Pasadena, CA Drinking Water
Lead data for Pasadena, California · 191,916 residents · 26 ZIP codes
Over the past reporting period, water systems in Pasadena, California have recorded Lead at detectable concentrations in EPA compliance samples.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Lead in Pasadena Tap Water
Lead has been detected in Pasadena, California drinking water at a maximum level of 1.8 ppb — below the EPA action level of 15 ppb (action level).
This analysis covers 191,916 residents across 26 ZIP codes in Pasadena.
Pasadena's overall water quality grade is B (80/100).
Is Lead in Pasadena 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 |
|---|---|---|---|
| 91101 | 1.8 ppb | 15 ppb (action level) | OK |
| 91102 | 1.8 ppb | 15 ppb (action level) | OK |
| 91103 | 1.8 ppb | 15 ppb (action level) | OK |
| 91104 | 1.8 ppb | 15 ppb (action level) | OK |
| 91105 | 1.8 ppb | 15 ppb (action level) | OK |
| 91106 | 1.8 ppb | 15 ppb (action level) | OK |
| 91107 | 1.8 ppb | 15 ppb (action level) | OK |
| 91109 | 1.8 ppb | 15 ppb (action level) | OK |
| 91110 | 1.8 ppb | 15 ppb (action level) | OK |
| 91114 | 1.8 ppb | 15 ppb (action level) | OK |
| 91115 | 1.8 ppb | 15 ppb (action level) | OK |
| 91116 | 1.8 ppb | 15 ppb (action level) | OK |
| 91117 | 1.8 ppb | 15 ppb (action level) | OK |
| 91121 | 1.8 ppb | 15 ppb (action level) | OK |
| 91123 | 1.8 ppb | 15 ppb (action level) | OK |
| 91124 | 1.8 ppb | 15 ppb (action level) | OK |
| 91125 | 1.8 ppb | 15 ppb (action level) | OK |
| 91126 | 1.8 ppb | 15 ppb (action level) | OK |
| 91129 | 1.8 ppb | 15 ppb (action level) | OK |
| 91182 | 1.8 ppb | 15 ppb (action level) | OK |
| 91184 | 1.8 ppb | 15 ppb (action level) | OK |
| 91185 | 1.8 ppb | 15 ppb (action level) | OK |
| 91188 | 1.8 ppb | 15 ppb (action level) | OK |
| 91189 | 1.8 ppb | 15 ppb (action level) | OK |
| 91191 | 1.8 ppb | 15 ppb (action level) | OK |
| ...1 more ZIP codes |
Average lead level across Pasadena: 1.8 ppb
EPA Violations for Lead in Pasadena
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2025-04-01 | Lead (Known) | Known | 91101 |
| 2025-04-01 | Lead (Known) | Known | 91102 |
| 2025-04-01 | Lead (Known) | Known | 91103 |
| 2025-04-01 | Lead (Known) | Known | 91104 |
| 2025-04-01 | Lead (Known) | Known | 91105 |
| 2025-04-01 | Lead (Known) | Known | 91106 |
| 2025-04-01 | Lead (Known) | Known | 91107 |
| 2025-04-01 | Lead (Known) | Known | 91109 |
| 2025-04-01 | Lead (Known) | Known | 91110 |
| 2025-04-01 | Lead (Known) | Known | 91114 |
| 2025-04-01 | Lead (Known) | Known | 91115 |
| 2025-04-01 | Lead (Known) | Known | 91116 |
| 2025-04-01 | Lead (Known) | Known | 91117 |
| 2025-04-01 | Lead (Known) | Known | 91121 |
| 2025-04-01 | Lead (Known) | Known | 91123 |
| 2025-04-01 | Lead (Known) | Known | 91124 |
| 2025-04-01 | Lead (Known) | Known | 91125 |
| 2025-04-01 | Lead (Known) | Known | 91126 |
| 2025-04-01 | Lead (Known) | Known | 91129 |
| 2025-04-01 | Lead (Known) | Known | 91182 |
| ... | 370 more violations |
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 Pasadena 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.