A
91

Excellent Water Quality

Altamont, MO 64620

Daviess County · Population served: 207 · Data updated March 2026

Water Systems Serving This Area

🌊
ALTAMONT PWS
Groundwater · Pop. 207
PWSID: MO1010010

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
2.4
15 ppb 1 ppb Warning

Violation History (Last 5 Years)

4Total (5yr)
0Health-Based
0Major

Water Quality Summary

Understanding Your Water in Altamont

Tap water quality in Altamont, Missouri (64620) receives an overall grade of A (Excellent) with a score of 91 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 11 points above the Missouri state average of 80. Compared to the national average (75), this area performs significantly better. The area is served by Altamont Pws, a groundwater system providing water to approximately 207 people. Testing has found elevated levels of Lead that warrant attention.

Your Score 91/100 A
vs State 11 pts above Missouri avg (80)
vs National 16 pts above national avg (75)

What a Grade A Means

A score of 91/100 means the water supply in Altamont, MO meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

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 Altamont, Missouri receives a grade of A (Excellent) with a score of 91/100. 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 64620 is served by 1 water system using groundwater sources, providing water to approximately 207 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 was detected at 2.4 ppb in Altamont, Missouri. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

No PFAS ("forever chemicals") were detected in water systems serving Altamont, Missouri 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 Altamont, Missouri have received 4 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.

Based on detected contaminants (lead), residents in Altamont, Missouri should consider: NSF/ANSI 53 certified filter — specifically rated for lead reduction. Pitcher filters (like Brita Longlast or PUR) and under-sink systems both work. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

Explore Nearby

Water Quality in Nearby ZIP Codes