CITY REPORT MA

Southwick, MA Home Safety: Home Safety 83/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for Southwick: B.

This ZIP looks solid, with a few items worth a quick check.

Throughout Southwick and across its water systems, EPA compliance data for MA shows above-average performance - violations are minimal, none of the tracked systems have recorded repeated MCL exceedances in recent cycles, and the safety picture has held steady across multiple reporting periods.

How Southwick Compares

Southwick83/100
Massachusetts avg70/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs with Violations
B · 83
Avg Safety Score
Zone 2
Radon Risk (Moderate)
$376K
Median Home Value
$2,100
Est. Remediation (0.6% of home value)

What You Should Know About Southwick Water

  • Average lead level: 0.0026 mg/L.
  • Homes built before 1986: 57% - older plumbing may contain lead solder.
  • Estimated remediation: $2,100 per household.
  • CDC health risk index: 13.38 - above typical levels.

Who Supplies Your Water in Southwick

Supply infrastructure in Southwick, MA runs through a single dominant provider - the main entity among 1 tracked system through which rate decisions, infrastructure work, and federal compliance are managed.

Overview

We track home safety data for 1 ZIP code in Southwick, Massachusetts, covering 1 community water system serving approximately 9,222 people. 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.

Home Safety Score

Average Home Safety Score for Southwick: B (83/100)

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

Southwick water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0026 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

Dominant radon zone: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

ZIP Code Safety Score System Population
01077 B Southwick Water Department 7,669

All ZIP Codes in Southwick

Data Sources

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

Health Outcomes in Southwick

12.7%
Asthma (US: 9.8%)
12.1%
Diabetes (US: 10.4%)
18.9%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 12.7% ↑
Diabetes 12.1% ↑
Mental Health 18.9% ↑

Vertical line = national average. Above national · Below national

Housing & Infrastructure in Southwick

1971
Median Build Year
57%
Built Before 1986
30%
Built Before 1970
Copper
Likely Pipe Material

With 57% 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

Pre-1986 plumbing is not a rare legacy case in Southwick - it's the dominant profile. The median build year of 1971 indicates a housing stock where lead-soldered copper joints are a common structural feature of residences across the city.

1971
Median Year Built
57%
Pre-1986 (Lead Paint Risk)
30%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (30%) 1970–1986 (27%) Post-1986 (43%)

Over half of homes in Southwick 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 Southwick Homeowners

Because property values in Southwick comfortably exceed estimated remediation costs, the equity impact here is proportionally small.

Median Home Value
$375,700
Est. Remediation
$2,100
Remediation as % of home value 0.6%

Remediation costs in Southwick are relatively low compared to home values. The $1,100–$3,400 estimated range is a small fraction of median property value. Home values are 33% below the Massachusetts average.

Lead Exposure Risk for Children in Southwick

57%
Homes Built Before 1986
0.0026
mg/L Avg Lead (Limit: 0.015)

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.

Older interior plumbing shapes the local picture: 57% of Southwick homes predate the federal solder ban, and aggregate sampling either approaches or crosses the action benchmark. That mix makes a single-home draw a standard pre-purchase or pre-occupancy step.

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

Historical NFIP Claim Context in Southwick

13
Total FEMA Flood Claims
$3,411
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Southwick contains 13 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $3,411. 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 <strong>$2,100</strong> 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.

Frequently Asked Questions

What does the Home Safety Score mean for Southwick, MA?
Southwick has an average Home Safety Score of 83/100 (Grade B) under model 4.0.0. The score combines EPA SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the PFAS MCL screen, EPA radon zone, and annual EPA AQI, and is published only when all required domains are observed. The available EPA record reports no violations for ZIP codes with reported counts. Check individual ZIP code reports for component details.
Does Southwick water have lead?
The average 90th-percentile lead level in Southwick is 0.0026 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home - testing is recommended especially in older properties.
How does Southwick compare to Massachusetts average?
Southwick has an average Home Safety Score of 83/100, which is above the Massachusetts state average of 70/100 for the same model series.
How many water systems serve Southwick?
Southwick is served by 1 public water system across 1 ZIP code, serving approximately 9,222 people.
How much does it cost to fix water issues in Southwick?
Estimated remediation costs in Southwick average $2,100 per household, ranging from $1,100 to $3,400. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesMassachusetts → Southwick, MA

How to cite this page

APA ZipCheckup. (2026). Southwick, MA Home Safety: Home Safety 83/100. https://zipcheckup.com/cities/ma/southwick/
BibTeX
@misc{zipcheckup-cities-ma-southwick,
  author = {{ZipCheckup}},
  title  = {{Southwick, MA Home Safety: Home Safety 83/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ma/southwick/}
}

Page version: August 2026.

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