CITY REPORT OH

Mount Saint Joseph, OH Water - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)

What You Should Know About Mount Saint Joseph Water

  • Average of reported 90th-percentile lead results: 0.0021 mg/L.
  • Homes built before 1986: 88% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 13.16.

Who Supplies Your Water in Mount Saint Joseph

Listed supplier for Mount Saint Joseph, OH: one system, of 1 on federal record.

Overview

We track home safety data for 1 ZIP code in Mount Saint Joseph, Ohio (population ~361), covering 1 community water system serving approximately 750,200 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Mount Saint Joseph water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0021 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

ZIP Code Safety Score System Population
45051 — Cincinnati Public Water System 750,200

All ZIP Codes in Mount Saint Joseph

Data Sources

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

Health Outcomes in Mount Saint Joseph

11.4%
Asthma (US: 9.8%)
13.2%
Diabetes (US: 10.4%)
17.3%
Poor Mental Health (US: 14.8%)

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

Asthma 11.4% ↑
Diabetes 13.2% ↑
Mental Health 17.3% ↑

Vertical line = national average. ■ Above national · ■ Below national

Housing & Infrastructure in Mount Saint Joseph

1979
Median Build Year
88%
Built Before 1986
49%
Built Before 1970
Copper
Likely Pipe Material

With 88% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Pre-1986 homes make up a large part of Mount Saint Joseph's housing; median build year 1979.

1979
Median Year Built
88%
Pre-1986 (lead solder era; lead paint banned 1978)
49%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (49%) 1970–1986 (39%) Post-1986 (12%)

Over half of homes in Mount Saint Joseph were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Lead Exposure Risk for Children in Mount Saint Joseph

88%
Homes Built Before 1986
0.0021
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

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.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

Does Mount Saint Joseph water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Mount Saint Joseph is 0.0021 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Mount Saint Joseph?
Our records map 1 water system to 1 ZIP code in Mount Saint Joseph. The related population figure in our data is approximately 361 people; it is not a count of people served citywide.
Home → Cities → Ohio → Mount Saint Joseph, OH

How to cite this page

APA ZipCheckup. (2026). Mount Saint Joseph, OH Water - Home Safety Score unavailable. https://zipcheckup.com/cities/oh/mount-saint-joseph/
BibTeX
@misc{zipcheckup-cities-oh-mount-saint-joseph,
  author = {{ZipCheckup}},
  title  = {{Mount Saint Joseph, OH Water - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/oh/mount-saint-joseph/}
}

Page version: October 2026.

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