Water Quality in Belmont, MA (02478)

EPA violation data for public water systems serving ZIP code 02478.

No Health-Based Violations

None of the 2 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are5 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 53% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

27,175

Population

Water Systems

Violations (5yr)

Health-Based

Location

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Water Systems Serving This Area (2)

Belmont Water Dept. (Mwra)

Purchased surface water 27,295 people served

1 violation (5yr)

Lead tested: 1.5 ppb (limit: 15 ppb) ✓

Belmont Golf Club

All resolved

Groundwater 50 people served

4 violations (5yr) · All resolved

Contaminants Found

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

4 violations

All resolved

Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

1 violation

Has active

Lead & Copper Levels

Lead (Pb)

Within limit

1.5 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Belmont (02478) has more violations than 53% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 5, most of which are monitoring/reporting issues.

Fewer violations 53th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.