Lewistown, MO Water Safety: 83/100 (2026)
1 ZIP code · 5 water systems · Updated 2026-06-03
Drinking water tracked for Lewistown by MO authorities posts above-average scores — the majority of systems are free from health-based exceedances and the city's grade sits above the state median.
How Lewistown Compares
Data: EPA SDWIS Last verified: 2026-06-03
Lewistown Water: The Quick Version
- Average lead level: 0.0044 mg/L.
- Homes built before 1986: 74% — older plumbing may contain lead solder.
- Estimated remediation: $900 per household.
- CDC health risk index: 14.58 — above typical levels.
Water Systems Serving Lewistown
In Lewistown, MO, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 5 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 1 ZIP code in Lewistown, Missouri (population ~1,136), covering 5 community water systems serving approximately 18,255 people region-wide.
No EPA violations recorded across any ZIP codes in Lewistown — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Lewistown: 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
Lewistown water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0044 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 |
|---|---|---|---|
| 63452 | B | Clark County Cons Pwsd 1 | 7,140 |
All ZIP Codes in Lewistown
- 63452 [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.
CDC Health Data for Lewistown
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
How Old Is Lewistown's Housing Stock?
With 74% 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
For residents trying to assess tap water risk in Lewistown, the median build year of 1961 is the starting context. It signals that a majority of homes were constructed before 1986 — the year federal rules prohibited lead solder in new plumbing — and that a significant share likely predates 1970, when lead pipes were still a common choice for residential service connections. Neither risk tier is rare in this housing inventory.
Over half of homes in Lewistown 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.
Lewistown: Remediation Cost in Perspective
Is remediation financially manageable for Lewistown homeowners? At a moderate equity share, generally yes — with deliberate budgeting ahead of time.
Remediation costs are moderate relative to home values in Lewistown. The estimated $300–$1,600 range is manageable for most homeowners but still worth budgeting for. Home values are 50% below the Missouri average.
Protecting Children from Lead in Lewistown
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.
Before the federal solder ban, lead solder was a routine plumbing material, and 74% of the Lewistown inventory was built in that earlier era — a share large enough to move household-level reads onto the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Lewistown, MO