COUNTY REPORT OH

Ottawa County, Ohio

13 ZIP codes · Home Safety Score unavailable · 0 of 13 tracked ZIP records scored

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

Unavailable
0 of 13 tracked ZIP records scored
13
ZIP Codes
$207K
Median Home Value
$500
Avg Remediation (0.24% of home value)

ZIP Code Risk Map

Water Quality Map: Ottawa County, Ohio

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 14.8 (asthma 10.5%, diabetes 13.8%)

Modeled additional annual cost estimate per homeowner: $1,812, largest modeled factor: Flood

57% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10.5% (national: 8.9%)
Diabetes 13.8% (national: 10.5%)
Obesity 38% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1959
Median Build Year
57%
Pre-1980 Housing
54/100
Infrastructure Stress Indicator
100%
ZIPs with High Infrastructure Stress
High
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $1,812

Flood $1,133/yr
Energy Code Gap $478/yr
Sea Level Rise $400/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

25,406 housing units in Ottawa County

Pre-1940 20%
1940–1959 16%
1960–1979 21%
1980–1999 26%
2000+ 17%

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 Ottawa County

$207K
Median Home Value
$500
Est. Remediation Cost
0.2%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Ottawa County can be compared with the median property value; actual costs vary by property.

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 Ottawa County residents

Asthma 10.5% (US avg: 8.9%)
Diabetes 13.8% (US avg: 11%)
Obesity 38% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Ottawa County ZIP codes

8 community water systems mapped to Ottawa County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

Systems with the most violations in Ottawa County

5 water systems with violations in EPA records.

All ZIP Codes in Ottawa County

13 ZIP codes tracked in Ottawa County.

# ZIP Code City Safety Score Grade Violations Home Value
1 43408 Clay Center — — $121K
2 43416 Elmore — — 9 (1 health) $176K
3 43432 Graytown — — $216K
4 43433 Gypsum — — —
5 43436 Isle Saint George — — 3 (1 health) —
6 43439 Lacarne — — —
7 43440 Lakeside Marblehead — — 4 (1 health) $275K
8 43446 Middle Bass — — 3 (1 health) —
9 43449 Oak Harbor — — 4 $175K
10 43452 Port Clinton — — 0 $207K
11 43456 Put In Bay — — 3 (1 health) $498K
12 43458 Rocky Ridge — — $88K
13 43468 Williston — — $210K

Recommended Buyer Guides for Ottawa County

Nothing on this list means a problem exists in your own home: the matches are drawn from county- and ZIP-level records, so a guide shows up because of an area signal, and only testing at your tap describes a specific household.

Overview

Ottawa County in Ohio covers 13 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.

6 of 7 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 3 health-based violations appear in the available health breakdown.

← Back to Ohio Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

How many water systems serve Ottawa County?
We map 8 public water systems to 13 ZIP codes in our data for Ottawa County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Ottawa County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Ottawa County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,812 per homeowner; actual costs vary by home.
How old are homes in Ottawa County?
The median home build year in Ottawa County is 1959. 57% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.

How to cite this page

APA ZipCheckup. (2026). Ottawa County, Ohio Home Safety Profile. https://zipcheckup.com/county/ohio/ottawa/
BibTeX
@misc{zipcheckup-county-ohio-ottawa,
  author = {{ZipCheckup}},
  title  = {{Ottawa County, Ohio Home Safety Profile}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/ohio/ottawa/}
}

Page version: October 2026.

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