Glenn County, California
12 ZIP codes · Avg score 81/100 · Grade B · Updated 2026-06-03
In recent assessments, Glenn County's 12 ZIP codes record strong, consistent water safety outcomes.
How Glenn County Compares
How Glenn County Compares
Glenn County scores 8 points above the California state average (73/100) and 13 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Glenn County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.5 (asthma 10.2%, diabetes 12.3%)
Estimated additional annual cost per homeowner: $1,715, driven primarily by flood
Infrastructure: 0.345% avg pipe failure probability, 18% of ZIPs at high risk
64.5% 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: $1,715
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
13,362 housing units in Glenn 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 Glenn County
Remediation costs are relatively manageable for most homeowners in Glenn 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 Glenn County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Glenn County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Butte City Community S.d. | 75 | 1 |
| 2 | City of Orland | 8,298 | 1 |
| 3 | Placer Cwa - Foothill | 89,544 | 0 |
| 4 | SEGURA'S RV PARK LLC | 27 | 0 |
| 5 | Artois Community S.d. | 254 | 0 |
10 total water systems serve Glenn County.
All ZIP Codes in Glenn County
12 ZIP codes tracked in Glenn County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95939 | Elk Creek | 99 | A | 0 | $263K |
| 2 | 95913 | Artois | 95 | A | 0 | — |
| 3 | 95970 | Princeton | 95 | A | 0 | $435K |
| 4 | 95951 | Hamilton City | 90 | A | 0 | $314K |
| 5 | 95920 | Butte City | 89 | A | 1 | $289K |
| 6 | 95963 | Orland | 88 | A | 1 | $353K |
| 7 | 95663 | Penryn | 73 | B | 0 | $963K |
| 8 | 95943 | Glenn | 73 | B | 0 | $946K |
| 9 | 95979 | Stonyford | 73 | B | 0 | $247K |
| 10 | 96070 | Obrien | 66 | C | 0 | — |
| 11 | 96008 | Bella Vista | 65 | C | 0 | $343K |
| 12 | 95988 | Willows | 60 | C | 0 | $299K |
Recommended Buyer Guides for Glenn County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 64.5% 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 Glenn County, California
Overview
Glenn County in California covers 12 ZIP codes with an average Home Safety Score of B (81/100).
2 of 12 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← 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.