Medfield, MA: 1 Violation - Home Safety 66/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Medfield: C.
A mixed picture - some signals here are worth your attention.
Medfield, MA holds a middle-tier grade; review the underlying water system records for the reasons behind it.
How Medfield Compares
Data: EPA SDWIS
Key Facts for Medfield Residents
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.007 mg/L.
- Homes built before 1986: 69% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.28.
Medfield's Water Providers
Which water system serves a particular address in Medfield, MA? The water bill or the utility can confirm it; the list here shows one system, and federal data link 1 in total.
- C
Overview
We track home safety data for 1 ZIP code in Medfield, Massachusetts, covering 1 community water system serving approximately 12,923 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. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Medfield: C (66/100)
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
Medfield water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0070 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 2.
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 |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 02052 | C | 1 | 0 | Medfield Water Department |
All ZIP Codes in Medfield
- 02052 [C] - 1 violation
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.
Medfield Community Health Snapshot
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
What's in Medfield's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Medfield Infrastructure Age
With 69% 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
Viewed through the lens of construction era, Medfield has a median build year of 1977; houses completed ahead of 1986 can hold lead-bearing solder or fittings.
Over half of homes in Medfield 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.
How Remediation Costs Compare in Medfield
How large is the remediation estimate next to home prices in Medfield? Small in relative terms: it amounts to 1% of the median value or less, although the dollar figure below is still an estimate and actual costs vary by property and contractor.
Estimated remediation costs in Medfield can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 55% above the Massachusetts average.
Medfield: Lead Risk & Vulnerable Populations
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.
Medfield: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Medfield contains 9 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $6,059. Among ZIP codes with claim records, 0% 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 $500 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 Medfield
- 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 Revised Total Coliform Rule, listed in the water-quality records for Medfield: 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 69% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Medfield, MA