Is King William, VA Tap Water Safe to Drink?
Graded A, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓
94.7/100
waterverge.com King William, VA — Water Quality Report
King William's drinking water received a grade of A (94.7 out of 100), indicating excellent water quality. The city's 2 water systems serve approximately 2,323 residents using groundwater.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 6 violations on record, including 0 health-based violations. 1 remains unresolved.
What to know about King William's water
King William ranks #19 out of 230 cities in Virginia for water quality, placing it one of the best in the state.
King William relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, King William may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is King William, VA water safe to drink?
King William's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (94.7/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 2 water systems serve approximately 2,323 residents using groundwater (wells).
Recent water quality updates for King William
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into King William's water quality assessment. Grade: A (94.7/100).
Federal disaster declaration (FEMA DR-4411). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4401). Hurricane event — may have impacted local water infrastructure.
Contaminants: Lead and Copper Rule.
Contaminants: Coliform (TCR).
Contaminants: Chlorine, Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for King William's water supply.
Well within EPA limits.
Violation history
King William's water system has 6 total violations on record, including 0 health-based violations. 1 remain unresolved.
Flood & environmental risk
King William County has experienced 9 federally declared disasters since 1996. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Moncuin Creek Below Us Hwy 360.
Where does King William's water come from?
King William's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 2,323 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Moncuin Creek Below Us Hwy 360 (river).
What King William residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
King William's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D2 — severe droughtKing William County is currently in D2 (severe drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
King William County has experienced 9 federally declared disasters since 1996. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how King William compares by contaminant
Explore where King William ranks among all Virginia cities for specific contaminants.
Water source & infrastructure
Where King William's water comes from
King William's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 2,323 people through 2 water systems.
Water bodies near King William
King William is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving King William
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CENTRAL GARAGE WATER SYSTEM | VA4101110 | 2,263 | GW |
| MT. OLIVE CHURCH COMM. WELL CO | VA4101550 | 60 | GW |
How King William compares
Full Virginia rankings →King William's score of 94.7/100 is above the average of 85/100 among major Virginia cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Virginia rankings →About King William, VA
Learn more about your water
Guides and resources related to King William's water quality findings.
Explore water quality across King William
Frequently asked questions
Is King William, VA tap water safe to drink?
King William's water quality earned a grade of A (94.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #19 out of 230 cities tested in Virginia.
What contaminants are in King William's water?
Lead was measured at 0.0 ppb (90th percentile). 6 violations are on record.
How is King William's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in King William?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does King William's water come from?
King William's water is sourced from Groundwater. The city has 2 water systems serving approximately 2,323 residents.
Is King William's groundwater at risk of contamination?
King William uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 6 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does King William's water compare to other cities?
King William ranks #19 out of 230 cities in Virginia (better than 92% of state cities) and #441 out of 15744 cities nationally (97th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.