Williamsburg, MO Home Safety: Home Safety 83/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Williamsburg: B.
This ZIP looks solid, with a few items worth a quick check.
Compared to statewide averages in MO, Williamsburg scores well - health violations are below the norm and systems generally operate within federal standards.
How Williamsburg Compares
Data: EPA SDWIS
Williamsburg Water: The Quick Version
- Average lead level: 0.0045 mg/L.
- Homes built before 1986: 41% - older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 13.85 - above typical levels.
Water Systems Serving Williamsburg
Consolidated water delivery characterizes Williamsburg, MO: among 1 system in federal records, one utility holds the dominant service position - carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.
- B
Overview
We track home safety data for 1 ZIP code in Williamsburg, Missouri (population ~756), covering 1 community water system serving approximately 13,080 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Home Safety Score
Average Home Safety Score for Williamsburg: B (83/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Williamsburg water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0045 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status 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 |
|---|---|---|---|
| 63388 | B | Callaway 2 Water District | 13,080 |
All ZIP Codes in Williamsburg
- 63388 [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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Williamsburg
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 Williamsburg's Housing Stock?
With 41% 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
Williamsburg's residential inventory spans multiple construction eras, with the median build year of 1998 landing in a zone where pre- and post-1986 homes are both well represented. That split matters because homes built before 1986 may contain lead-soldered copper joints - a plumbing practice banned that year - while those built before 1970 face the additional possibility of lead pipes in the service line. Whether a specific household sits on the older or newer end of this distribution is the primary variable shaping its individual exposure risk.
Most homes in Williamsburg were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Williamsburg: Remediation Cost in Perspective
The equity share of documented remediation in Williamsburg is high - a cost-to-value ratio that places this market in the elevated tier and means most homeowners are weighing a financial decision where scoping by urgency, mapping costs against household budget, and knowing what assistance options exist are practical steps that can materially improve outcomes.
At 2.4% of home value, remediation costs in Williamsburg represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $800–$2,600. Home values here are 62% below the Missouri average.
Protecting Children from Lead in Williamsburg
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.
Wherever 41% of local housing was built before solder rules changed - as is the case in Williamsburg - a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Williamsburg
Historical NFIP data for Williamsburg contains 4 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $10,345. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$1,600</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Williamsburg, MO