Williamsburg, MO Home Safety: Home Safety 83/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Williamsburg: B.
This ZIP has a few items worth a quick check.
In the dataset behind this page, Williamsburg, MO receives one of the two highest grades; read the compliance history system by system for details.
How Williamsburg Compares
Data: EPA SDWIS
Williamsburg Water: The Quick Version
- Average of reported 90th-percentile lead results: 0.0045 mg/L.
- Homes built before 1986: 41% - older plumbing may contain lead solder.
- Health risk index (ZipCheckup composite of CDC data): 13.85.
Water Systems Serving Williamsburg
Listed supplier for Williamsburg, MO: one system, of 1 on federal record.
- 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 of reported 90th-percentile lead results: 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
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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). County health indicators are shown for context only and are not linked to this area's water records.
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. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead solder was allowed in new plumbing until the 1986 federal restrictions, which is why older homes in Williamsburg deserve a closer look; the median build year is 1998.
Most homes in Williamsburg were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Williamsburg
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
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.
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