B
73

Good Water Quality

Mc Henry, MS 39561

Stone County · Population served: 1,653 · Data updated March 2026

Water Systems Serving This Area

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MCHENRY UTILITY ASSN, INC
Groundwater · Pop. 1,653
PWSID: MS0660002

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.8
15 ppb 1 ppb Passed

Violation History (Last 5 Years)

15Total (5yr)
0Health-Based
9Major

Water Quality Summary

Understanding Your Water in Mc Henry

Tap water quality in Mc Henry, Mississippi (39561) receives an overall grade of B (Good) with a score of 73 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 8 points above the Mississippi state average of 65. The area is served by Mchenry Utility Assn, Inc, a groundwater system providing water to approximately 1,653 people. The area has 15 violations over the past 5 years, though none were classified as health-based.

Your Score 73/100 B
vs State 8 pts above Mississippi avg (65)
vs National 2 pts below national avg (75)

What a Grade B Means

A score of 73/100 means the water in Mc Henry, MS is generally good and meets EPA standards, with only minor areas of concern. There may be low levels of detectable contaminants or a small number of non-critical violations. Most residents can feel comfortable with their tap water quality, though basic filtration can provide an extra layer of protection.

Groundwater: drawn from underground aquifers via wells

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 EPA data, tap water in Mc Henry, Mississippi receives a grade of B (Good) with a score of 73/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 39561 is served by 1 water system using groundwater sources, providing water to approximately 1,653 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead levels in Mc Henry, Mississippi are 0.8 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 Mc Henry, Mississippi 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 Mc Henry, Mississippi have received 15 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 Mc Henry, Mississippi 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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