Wrentham, MA: 11 Health Violations — 58/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Wrentham, MA: mid-range safety grade, uneven compliance across service areas.
How Wrentham Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Wrentham Water
- Your city's water systems recorded 21 violations in the past 5 years.
- Average lead level: 0.003 mg/L.
- Homes built before 1986: 58% — older plumbing may contain lead solder.
- Estimated remediation: $3,400 per household.
- CDC health risk index: 10.28.
Who Supplies Your Water in Wrentham
Federal drinking water records identify 3 systems in Wrentham, MA. The leading 3 providers serve the largest share of residential connections, each operating as a separate entity with its own rate authority, infrastructure management, and EPA compliance obligations — so service conditions are not uniform city-wide.
Overview
We track water quality and home safety data for 1 ZIP code in Wrentham, Massachusetts, covering 3 community water systems serving approximately 12,305 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 11 health-based violations documented.
Home Safety Score
Average Home Safety Score for Wrentham: C (58/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Wrentham water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0030 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Gross Beta | Radionuclides | 16 | 1 |
| Lead and Copper Rule | Treatment Technique | 14 | 1 |
| Consumer Confidence Report Rule | Reporting | 10 | 1 |
| Total Coliform | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 02093 | C | 21 | 11 | Wrentham Water Division |
All ZIP Codes in Wrentham
- 02093 [C] — 21 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
Updated daily.
Health Outcomes in Wrentham
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Wrentham Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Wrentham
With 58% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder 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, Wrentham is predominantly an older city — a median build year of 1988 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Wrentham were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Wrentham Homeowners
Remediation costs in Wrentham are small relative to typical property values — the cost-to-value ratio here is favorable.
Remediation costs in Wrentham are relatively low compared to home values. The $1,900–$5,600 estimated range is a small fraction of median property value. Home values are 7% above the Massachusetts average.
Lead Exposure Risk for Children in Wrentham
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Practically, the structural drivers in Wrentham — 58% pre-rule stock and citywide monitoring at or beyond the regulatory benchmark — make an in-home draw the practical way to translate aggregate averages into the specific conditions at one address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Wrentham
Flood exposure in Wrentham is meaningful by NFIP measures — 2 claims on record and 100% of ZIP codes carrying FEMA flood zone designations. That level of activity makes flood history a relevant factor when evaluating local water quality over time.
Wrentham has a moderate flood history with 2 FEMA claims. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$3,400</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Wrentham
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Gross Beta can reduce the most common contaminant found in Wrentham's water.
- Check your home's plumbing. With 58% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Wrentham, MA