London, OH: 6 Health Violations - Home Safety 50/100
1 ZIP code · 4 water systems · Updated
ZipCheckup grade for London: D.
Federal records show several conditions worth reviewing.
Your top priority: match a filter's certification to the violations (6 health-based violations). NSF certified filters →
Averaged across its ZIP codes, the Home Safety Score for London, OH falls into the bottom two grade bands.
How London Compares
Data: EPA SDWIS
London Water: The Quick Version
- Your city's water systems recorded 23 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0021 mg/L.
- Homes built before 1986: 64% - older plumbing may contain lead solder.
- Estimated remediation: $600 per household.
- Health risk index (ZipCheckup composite of CDC data): 13.77.
Water Systems Serving London
More than one public water system is linked to London, OH: federal records tie 4 systems to the area, and the 3 with the largest reported service populations are shown below. Which of them supplies a particular address depends on where the property sits, and a water bill or the utility can confirm it.
- D
- D
- D
Overview
We track home safety data for 1 ZIP code in London, Ohio, covering 4 community water systems serving approximately 24,162 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 6 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for London: D (50/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
London water systems draw from: Groundwater.
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.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Rule | Reporting | 24 | 1 |
| Arsenic | Inorganic | 10 | 1 |
| Lead and Copper Rule | Treatment Technique | 4 | 1 |
| Lead and Copper Rule Revisions | Treatment Technique | 4 | 1 |
| E. coli | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 43140 | D | 23 | 6 | Mid-ohio Water Supply District - Chrisman Avenue Wtp |
All ZIP Codes in London
- 43140 [D] - 23 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for London
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
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in London
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is London's Housing Stock?
With 64% 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
Some homes in London predate the 1986 federal restrictions on lead in new pipe and solder, so a tap test is a reasonable step for older homes; median build year: 1974.
Over half of homes in London 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.
London: Remediation Cost in Perspective
Because the median home value in London is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.
Estimated remediation costs in London can be compared with local home values. The $300–$1,500 estimated range can be set against the median property value; actual costs vary by home. Home values are 24% above the Ohio average.
Protecting Children from Lead in London
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.
Historical Flood-Claim Evidence for London
Historical NFIP data for London contains 15 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $8,886. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $600 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
What You Can Do in London
- Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
- Install a certified water filter. For Consumer Confidence Rule, listed in the water-quality records for London: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. With 64% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.
Deep Dive Reports
Detailed analysis for London, OH