B
77

US Water Score: B

Edgewood, MD 21040

Harford County · Population served: 104,567 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

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HARFORD COUNTY D.P.W.
Surface water · Pop. 104,567
PWSID: MD0120016

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.0
15 ppb 1 ppb Passed

Violation History (Last 5 Years)

3Total (5yr)
0Health-Based
3Major

Water Quality Summary

Understanding Your Water in Edgewood

Tap water quality in Edgewood, Maryland (21040) receives an overall grade of B (Moderate-low record-based concern) with a score of 77 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Maryland state average of 80. The area is served by Harford County D.P.W., a surface water system providing water to approximately 104,567 people.

Your Score 77/100 B
vs State 3 pts below Maryland avg (80)
vs National 2 pts above national avg (75)

What a Grade B Means

A score of 77/100 means Edgewood, MD performs well in the US Water Score model, with only minor system-level concerns. Residents should still review their utility's Consumer Confidence Report for official compliance information and household-specific context.

Surface water: sourced from rivers, lakes, or reservoirs

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Based on public water-system records, Edgewood, Maryland receives an internal US Water Score grade of B (Moderate-low record-based concern) with a score of 77/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.

ZIP code 21040 is served by 1 water system using surface water sources, providing water to approximately 104,567 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

Lead levels in Edgewood, Maryland are 0.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

No PFAS ("forever chemicals") were detected in water systems serving Edgewood, Maryland during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Edgewood, Maryland have received 3 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Water in Edgewood, Maryland shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.

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