Lassen County, California
18 ZIP codes · Avg score 75/100 · Grade B · Updated 2026-07-19
ZipCheckup grade for Lassen: B.
This ZIP looks solid, with a few items worth a quick check.
Within Lassen County's 18 tracked ZIP codes, safety indicators remain above the national average with few health-based violations on record.
How Lassen County Compares
How Lassen County Compares
Lassen County scores 2 points above the California state average (73/100) and 7 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Lassen County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.2 (asthma 10.3%, diabetes 12%)
Estimated additional annual cost per homeowner: $1,427, driven primarily by flood
Infrastructure: 0.422% avg pipe failure probability, 47% of ZIPs at high risk
67.2% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,427
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
16,192 housing units in Lassen County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Lassen County
Remediation costs are relatively manageable for most homeowners in Lassen County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Lassen County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Lassen County
8 community water systems serving Lassen County.
- C
- C
- A
- A
- A
- A
Show all 8 water systems
- A
- C
12 total water systems serve Lassen County.
All ZIP Codes in Lassen County
18 ZIP codes tracked in Lassen County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 96113 | Herlong | 99 | A | 0 | $72K |
| 2 | 96127 | Susanville | 99 | A | 0 | — |
| 3 | 96009 | Bieber | 97 | A | 0 | $143K |
| 4 | 96130 | Susanville | 90 | A | 0 | $258K |
| 5 | 96121 | Milford | 88 | A | 0 | — |
| 6 | 96068 | Nubieber | 73 | B | 0 | — |
| 7 | 96114 | Janesville | 73 | B | 0 | $298K |
| 8 | 96128 | Standish | 73 | B | 0 | $392K |
| 9 | 96006 | Adin | 66 | C | 0 | $281K |
| 10 | 96054 | Lookout | 66 | C | 0 | $144K |
| 11 | 96109 | Doyle | 66 | C | 0 | $232K |
| 12 | 96117 | Litchfield | 66 | C | 0 | $316K |
| 13 | 96119 | Madeline | 66 | C | 0 | — |
| 14 | 96123 | Ravendale | 66 | C | 0 | — |
| 15 | 96132 | Termo | 66 | C | 0 | — |
| 16 | 96136 | Wendel | 66 | C | 0 | — |
| 17 | 96103 | Blairsden-graeagle | 65 | C | 0 | $430K |
| 18 | 92624 | Capistrano Beach | 60 | C | 0 | $1142K |
Recommended Buyer Guides for Lassen County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 67.2% of homes built before 1978
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Lassen County, California
Overview
Lassen County in California covers 18 ZIP codes with an average Home Safety Score of B (75/100).
No EPA violations are recorded for the tracked water systems in Lassen County as of the latest reporting period.
← Back to California water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.