B
73

Good Water Quality

Theodosia, MO 65761

Ozark County · Population served: 303 · Data updated March 2026

Water Systems Serving This Area

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OZARK COUNTY PWSD 1
Groundwater · Pop. 243
PWSID: MO5024444
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SUNDOWN WATER SYSTEM INC
Groundwater · Pop. 60
PWSID: MO5030209

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
13.2
15 ppb 1 ppb Warning

Violation History (Last 5 Years)

7Total (5yr)
2Health-Based
0Major

Water Quality Summary

Understanding Your Water in Theodosia

Tap water quality in Theodosia, Missouri (65761) 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 7 points below the Missouri state average of 80. The area is served by 2 water systems providing water to approximately 303 people, using groundwater sources. Testing has found elevated levels of Lead that warrant attention. Over the past 5 years, water systems here have accumulated 7 violations, including 2 health-based violations.

Your Score 73/100 B
vs State 7 pts below Missouri avg (80)
vs National 2 pts below national avg (75)

What a Grade B Means

A score of 73/100 means the water in Theodosia, MO 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 Theodosia, Missouri 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 65761 is served by 2 water systems using groundwater sources, providing water to approximately 303 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 13.2 ppb in Theodosia, 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 Theodosia, 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 Theodosia, Missouri have received 7 violations in the last 5 years, including 2 health-based violations. 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 Theodosia, 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.

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