Home hazard report for 63166 — Saint Louis, MO
ZIP 63166 is served by Corinth PWD (as listed by the state): no health-based violations since 2016, latest lead result 4.6 ppb, PFAS 1 detected. St. Louis (city) is in EPA radon zone 2.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2025). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
The nearest active Superfund site is 5.1 miles away.
Active weather alerts
live from the National Weather ServiceChecking the National Weather Service…
Where ZIP 63166 is
scroll or pinch to zoomDrinking water: Corinth PWD
Health-based violations
No health-based violations reported since 2016.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFBA | 5.6 ppt | 2 of 4 | — |
| PFPeA | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| PFHxA | not detected | 0 of 4 | — |
| PFBS | not detected | 0 of 4 | — |
| PFHxS | not detected | 0 of 4 | — |
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFNA | not detected | 0 of 4 | — |
| HFPO-DA (GenX) | not detected | 0 of 4 | — |
| PFDA | not detected | 0 of 4 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in St. Louis (city)
EPA radon zone 2 — moderate potential. Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Sauget Area 2 Sauget, Illinois · EPA ID ILD000605790 | Proposed | 5.1 mi |
| NL Industries/Taracorp Lead Smelter Granite City, Illinois · EPA ID ILD096731468 | Active (final NPL) | 5.4 mi |
| Sauget Area 1 Cahokia, Sauget, Illinois · EPA ID ILD980792006 | Proposed | 6.0 mi |
| Jennison-Wright Corporation Granite City, Illinois · EPA ID ILD006282479 | Active (final NPL) | 6.2 mi |
| Old American Zinc Plant Fairmont City, Illinois · EPA ID IL0000034355 | Active (final NPL) | 7.8 mi |
| St. Louis Airport/Hazelwood Interim Storage/Futura Coatings Co. St. Louis County, Missouri · EPA ID MOD980633176 | Active (final NPL) | 9.7 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 63166
Who supplies drinking water to ZIP 63166?
Corinth PWD (EPA ID IL1995120), a surface water (rivers, lakes) system serving about 3,927 people, listed by the state as serving this ZIP code.
Is there lead in Saint Louis, MO tap water?
The utility’s latest 90th-percentile lead result (Jan 2025) was 4.6 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Saint Louis, MO water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 63166 had violations?
No health-based violations reported since 2016.
Are there Superfund sites near 63166?
The nearest active Superfund site is 5.1 miles away. Sites within 10 miles: Sauget Area 2 (5.1 mi, Proposed); NL Industries/Taracorp Lead Smelter (5.4 mi, Active (final NPL)); Sauget Area 1 (6.0 mi, Proposed).
Is radon a problem in St. Louis (city)?
St. Louis (city) is in EPA radon zone 2 (moderate potential). Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.