Bremer County, Iowa
7 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
Across Bremer County's 7 ZIP codes, water safety results are uneven — a portion of systems carry active or recent violations, while others meet standards without issues.
How Bremer County Compares
How Bremer County Compares
Bremer County scores 2 points above the Iowa state average (59/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Bremer County, Iowa
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.6 (asthma 9.6%, diabetes 9.9%)
Estimated additional annual cost per homeowner: $1,706, driven primarily by flood
Infrastructure: 0.487% avg pipe failure probability, 100% of ZIPs at high risk
83.1% 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: $1,706
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,902 housing units in Bremer 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 Bremer County
Remediation costs are relatively manageable for most homeowners in Bremer 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 Bremer 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 Bremer County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Denver Water Supply | 1,919 | 6 |
| 2 | Terrace Heights | 548 | 3 |
| 3 | Meadow Lane Mobile Home Park | 168 | 3 |
| 4 | TRIPOLI WATER SUPPLY | 1,191 | 3 |
| 5 | Waverly Water Department | 10,394 | 3 |
11 total water systems serve Bremer County.
All ZIP Codes in Bremer County
7 ZIP codes tracked in Bremer County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 50666 | Plainfield | 70 | B | 0 | $168K |
| 2 | 50668 | Readlyn | 70 | B | 0 | $171K |
| 3 | 50676 | Tripoli | 65 | C | 0 | $145K |
| 4 | 50622 | Denver | 59 | C | 3 | $246K |
| 5 | 50674 | Sumner | 57 | C | 0 | $156K |
| 6 | 50677 | Waverly | 54 | D | 3 | $222K |
| 7 | 50631 | Frederika | 53 | D | 0 | $101K |
Recommended Buyer Guides for Bremer County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Lead Paint Test Kits — 83.1% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Bremer County, Iowa
Overview
Bremer County in Iowa covers 7 ZIP codes with an average Home Safety Score of C (61/100).
2 of 7 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Iowa 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.