Is Knott'S Island, VA Tap Water Safe to Drink?
Graded B+, with 31 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
81/100
waterverge.com Knott'S Island, VA — Water Quality Report
Knott'S Island's drinking water received a grade of B+ (81 out of 100), indicating good water quality. The city's 1 water system serves approximately 559 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 117 violations on record, including 2 health-based violations. 31 remain unresolved.
What to know about Knott'S Island's water
Knott'S Island ranks #142 out of 230 cities in Virginia for water quality, placing it below average in the state.
Knott'S Island 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, Knott'S Island may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Knott'S Island, VA water safe to drink?
Knott'S Island's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (81/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 559 residents using groundwater (wells).
Recent water quality updates for Knott'S Island
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Knott'S Island's water quality assessment. Grade: B+ (81/100).
Contaminants: Lead and Copper Rule.
Contaminants: Consumer Confidence Rule.
Contaminants: Asbestos.
Key contaminant findings
Based on the most recent EPA sampling data for Knott'S Island's water supply.
Well within EPA limits.
Violation history
Knott'S Island's water system has 117 total violations on record, including 2 health-based violations. 31 remain unresolved. 1 violation was issued in the last 5 years.
Where does Knott'S Island's water come from?
Knott'S Island's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 559 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Thalia Creek (stream), Lynnhaven River Inlet (stream), Bypass Canal (stream), London Bridge Creek (stream), Little Neck Creek (stream).
What Knott'S Island residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Knott'S Island's water.
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.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
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 Knott'S Island compares by contaminant
Explore where Knott'S Island ranks among all Virginia cities for specific contaminants.
Water source & infrastructure
Where Knott'S Island's water comes from
Knott'S Island'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 private ownership and serves approximately 559 people through 1 water system.
Water bodies near Knott'S Island
Knott'S Island is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Knott'S Island
| System Name | PWSID | Population | Source |
|---|---|---|---|
| SANDY POINT RESORT & CAMPGROUND | NC0427101 | 559 | GW |
How Knott'S Island compares
Full Virginia rankings →Knott'S Island's score of 81/100 is on par with the average of 85/100 among major Virginia cities. It outscores 4 of 10 nearby cities. 6 of 10 nearby cities score higher.
Nearby cities
View Virginia rankings →About Knott'S Island, VA
Wikipedia →Virginia Beach is the most populous city in the U.S. commonwealth of Virginia. The city is located on the Atlantic Ocean at the mouth of the Chesapeake Bay in southeastern Virginia. It is the sixth-most populous city in the Mid-Atlantic, ninth-most populous in the Southeast, and the 42nd-most populous city in the U.S. with a population of 459,470 at the 2020 census. Virginia Beach is a principal city in the Hampton Roads metropolitan area, which has more than 1.8 million inhabitants and is the 37th-largest metropolitan area in the U.S.
Learn more about your water
Guides and resources related to Knott'S Island's water quality findings.
Explore water quality across Currituck
Frequently asked questions
Is Knott'S Island, VA tap water safe to drink?
Knott'S Island's water quality earned a grade of B+ (81/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #142 out of 230 cities tested in Virginia.
What contaminants are in Knott'S Island's water?
Lead was measured at 0.0 ppb (90th percentile). 117 violations are on record.
How is Knott'S Island'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 Knott'S Island?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Knott'S Island's water come from?
Knott'S Island's water is sourced from Groundwater. The city has 1 water system serving approximately 559 residents.
What health violations has Knott'S Island's water system had?
Knott'S Island has 2 health-based violations on record. The most recent violation was recorded in January 2023. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 31 violations remain unresolved.
Is Knott'S Island's groundwater at risk of contamination?
Knott'S Island 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 117 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 Knott'S Island's water compare to other cities?
Knott'S Island ranks #142 out of 230 cities in Virginia (better than 38% of state cities) and #7648 out of 15744 cities nationally (51th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Knott'S Island's small water system affect quality?
Knott'S Island's system serves approximately 559 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 117 violations on record.