B63/100
WILLIAMSBURG PUBLIC WATER SUPPLY — Water Quality Report 2026
Serving 3,345 people · Iowa
Water Source
Groundwater
County
—
System ID
IA4884023
Violations
14
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.36 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Violation related to Consumer Confidence Report
When: December 21, 2023 – September 26, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WILLIAMSBURG PUBLIC WATER SUPPLY
Is WILLIAMSBURG PUBLIC WATER SUPPLY water safe to drink?
WILLIAMSBURG PUBLIC WATER SUPPLY water receives a grade of B (63/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WILLIAMSBURG PUBLIC WATER SUPPLY detected?
2 contaminants were tested in WILLIAMSBURG PUBLIC WATER SUPPLY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does WILLIAMSBURG PUBLIC WATER SUPPLY have any EPA violations?
Yes, WILLIAMSBURG PUBLIC WATER SUPPLY has 14 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MCL. 3 are health-based violations.
How many people does WILLIAMSBURG PUBLIC WATER SUPPLY serve?
WILLIAMSBURG PUBLIC WATER SUPPLY serves approximately 3,345 people, Iowa. The system provides water to 1 community: Williamsburg.
What type of water does WILLIAMSBURG PUBLIC WATER SUPPLY provide?
WILLIAMSBURG PUBLIC WATER SUPPLY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA4884023.
How does WILLIAMSBURG PUBLIC WATER SUPPLY compare to other utilities in Iowa?
WILLIAMSBURG PUBLIC WATER SUPPLY scores 63/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Iowa state page for a full comparison of water systems.