Pasadena, CA: 4 Violations - Home Safety 72/100
26 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Pasadena: B.
This ZIP has a few items worth a quick check.
Across Pasadena, CA, the overall grade falls in the upper range - a summary score, not a measurement taken at any single tap.
How Pasadena Compares
Data: EPA SDWIS
Water Quality Map: Pasadena, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Pasadena's 6 ZIP codes.
Key Facts for Pasadena Residents
- Your city's water systems recorded 4 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0001 mg/L.
- Estimated remediation: $550 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.69.
Pasadena's Water Providers
When a city is linked to 5 water systems, as Pasadena, CA is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.
- B
- B
- B
Overview
We track home safety data for 26 ZIP codes in Pasadena, California (population ~150,994), covering 5 community water systems serving approximately 233,463 people region-wide. The EPA snapshots used for this build directly map water systems to 7 of 26 ZIP codes.
1 of 7 ZIP codes with a reported violation count in the available EPA record (14%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Pasadena: B (72/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Pasadena water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0001 mg/L (EPA action level: 0.015 mg/L)
- 0 of 7 ZIP codes with known status exceed the EPA lead action level
Radon Risk
25 of 26 ZIP records with known zones are in EPA Radon Zone 2. 1 of 26 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 8 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 91107 | B | 4 | 0 | Pasadena Water and Power |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 91101 | B | Pasadena Water and Power | 164,344 |
| 91103 | B | Pasadena Water and Power | 164,344 |
| 91104 | C | Pasadena Water and Power | 164,344 |
| 91105 | B | Pasadena Water and Power | 164,344 |
| 91106 | B | Pasadena Water and Power | 164,344 |
| 91125 | — | Pasadena Water and Power | 164,344 |
All ZIP Codes in Pasadena
- 91101 [B]
- 91102
- 91103 [B]
- 91104 [C]
- 91105 [B]
- 91106 [B]
- 91107 [B] - 4 violations
- 91109
- 91110
- 91114
- 91115
- 91116
- 91117
- 91121
- 91123
- 91124
- 91125
- 91126
- 91129
- 91182
- 91184
- 91185
- 91188
- 91189
- 91191
- 91199
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Pasadena Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Pasadena's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Pasadena
Here the gap between local home values and the estimated repair bill is wide, so the percentage shown below for Pasadena stays at or under the 1% mark.
Estimated remediation costs in Pasadena can be compared with local home values. The $350–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 38% above the California average.
Pasadena: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Available area-level lead records for Pasadena do not determine the lead level at an individual tap. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Pasadena: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Pasadena contains 73 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $5,132. Among ZIP codes with claim records, 20% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $550 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Pasadena, CA