Good Water Quality
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFBA | 5.6 ppt | No standard | 500 ppt | Unregulated |
Water Quality Summary
Tap water quality in Saint Louis, Missouri (63166) receives an overall grade of B (Good) with a score of 76 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Missouri state average of 80. The area is served by Corinth Pwd, a surface water system providing water to approximately 3,927 people. PFAS testing detected 1 compound, all currently below EPA limits.
A score of 76/100 means the water in Saint Louis, 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.
Common Questions
Based on EPA data, tap water in Saint Louis, Missouri receives a grade of B (Good) with a score of 76/100. 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 63166 is served by 1 water system using surface water sources, providing water to approximately 3,927 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.
No lead data is currently available for ZIP code 63166. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.
1 PFAS compound were detected in water serving Saint Louis, Missouri, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.
Water systems serving Saint Louis, Missouri have received 10 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 (PFAS), residents in Saint Louis, Missouri should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.