Humphreys, MO Water Safety: 83/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Throughout Humphreys and across its water systems, EPA compliance data for MO shows above-average performance — violations are minimal, none of the tracked systems have recorded repeated MCL exceedances in recent cycles, and the safety picture has held steady across multiple reporting periods.
How Humphreys Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Humphreys Residents
- Average lead level: 0.0006 mg/L.
- Homes built before 1986: 69% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 15.62 — above typical levels.
Humphreys's Water Providers
Water delivery in Humphreys, MO is handled by 2 utilities rather than a single system — drawn from 2 providers in federal records, each filing its own compliance reports and setting its own rates.
Overview
We track water quality and home safety data for 1 ZIP code in Humphreys, Missouri (population ~365), covering 2 community water systems serving approximately 4,510 people region-wide.
No EPA violations recorded across any ZIP codes in Humphreys — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Humphreys: B (83/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Humphreys water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0006 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 64646 | B | Sullivan County Pwsd 1 | 4,412 |
All ZIP Codes in Humphreys
- 64646 [B]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Humphreys Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Humphreys Infrastructure Age
With 69% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Because the majority of Humphreys's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1975 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Humphreys were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Humphreys
In Humphreys, the equity impact of remediation is proportionally small — not the kind of financial commitment that rises to the level of a genuine planning constraint, but a minor share of what most properties here are worth.
Remediation costs in Humphreys are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 50% below the Missouri average.
Humphreys: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
When older housing represents 69% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Humphreys address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Humphreys, MO