Brockton, MA: 5 Violations — 78/100 (2026)
5 ZIP codes · 1 water system · Updated 2026-06-03
Within Brockton, safety indicators for tap water remain above the MA median — documented violations are infrequent and the city's compliance record sits in the upper tier.
How Brockton Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Brockton, MA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Brockton.
Brockton Water: The Quick Version
- Your city's water systems recorded 5 violations in the past 5 years.
- Average lead level: 0.004 mg/L.
- Estimated remediation: $880 per household.
- CDC health risk index: 12.05 — above typical levels.
Water Systems Serving Brockton
In Brockton, MA, the drinking water supply is organized under a single dominant utility — a consolidated structure that shapes how infrastructure investment, regulatory compliance, and rate decisions flow to households. When one provider handles the overwhelming share of residential connections out of 1 tracked system, accountability is clear: service upgrades, EPA violation responses, and tariff changes all funnel through that single organizational structure.
Overview
We track water quality and home safety data for 5 ZIP codes in Brockton, Massachusetts, covering 1 community water system serving approximately 105,080 people.
5 of 5 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Brockton: B (78/100)
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
Brockton water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0040 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)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 5 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 6 | 5 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 02301 | C | 1 | 0 | Brockton Water Department |
| 02302 | B | 1 | 0 | Brockton Water Department |
| 02303 | B | 1 | 0 | Brockton Water Department |
| 02304 | B | 1 | 0 | Brockton Water Department |
| 02305 | B | 1 | 0 | Brockton Water Department |
All ZIP Codes in Brockton
- 02301 [C] — 1 violation
- 02302 [B] — 1 violation
- 02303 [B] — 1 violation
- 02304 [B] — 1 violation
- 02305 [B] — 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
Updated daily.
CDC Health Data for Brockton
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
Key Contaminants Detected in Brockton
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Brockton: Remediation Cost in Perspective
In Brockton, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Brockton are relatively low compared to home values. The $320–$1,520 estimated range is a small fraction of median property value. Home values are 26% below the Massachusetts average.
Protecting Children from Lead in Brockton
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.
Lead risk in Brockton appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Brockton
NFIP records stretching across multiple decades show Brockton accumulating 339 claims and carrying 40% of its ZIP codes inside FEMA flood zones — evidence of meaningful exposure that extends beyond isolated incidents. The mechanisms linking flooding to water quality haven't changed: treatment facilities can be overwhelmed, wells can be infiltrated, and distribution systems can experience backflow. For a community at this exposure level, those mechanisms shift from hypothetical to periodically relevant.
Brockton has a moderate flood history with 339 FEMA claims averaging $6,735 per payout. 40% 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>$880</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.
Deep Dive Reports
Detailed analysis for Brockton, MA