Is East Williston (V), NY Tap Water Safe to Drink?
Graded A-, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
86.6/100
waterverge.com East Williston (V), NY — Water Quality Report
East Williston (V)'s drinking water received a grade of A- (86.6 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,556 residents using purchased ground water.
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 3 violations on record, including 0 health-based violations. 2 remain unresolved.
What to know about East Williston (V)'s water
East Williston (V) ranks #396 out of 855 cities in New York for water quality, placing it mid-range in the state.
East Williston (V) purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, East Williston (V) may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is East Williston (V), NY water safe to drink?
East Williston (V)'s tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (86.6/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 2,556 residents using groundwater (wells).
Recent water quality updates for East Williston (V)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into East Williston (V)'s water quality assessment. Grade: A- (86.6/100).
Federal disaster declaration (FEMA DR-4755). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4615). Hurricane event — may have impacted local water infrastructure.
Contaminants: Lead and Copper Rule.
Contaminants: Consumer Confidence Rule.
Key contaminant findings
Based on the most recent EPA sampling data for East Williston (V)'s water supply.
Well within EPA limits.
Violation history
East Williston (V)'s water system has 3 total violations on record, including 0 health-based violations. 2 remain unresolved.
Flood & environmental risk
Nassau County has experienced 10 federally declared disasters since 2005. 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 Alley Creek, Mill Neck Creek, Bellmore Creek, Bellmore Creek Tributary, East Meadow Brook.
Where does East Williston (V)'s water come from?
East Williston (V)'s drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 2,556 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Alley Creek (river), Mill Neck Creek (river), Bellmore Creek (river), Bellmore Creek Tributary (river), East Meadow Brook (river).
What East Williston (V) 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.
East Williston (V)'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
D1 — moderate droughtNassau County is currently in D1 (moderate 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
Nassau County has experienced 10 federally declared disasters since 2005. 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 East Williston (V) compares by contaminant
Explore where East Williston (V) ranks among all New York cities for specific contaminants.
Water source & infrastructure
Where East Williston (V)'s water comes from
East Williston (V) purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of East Williston (V)'s local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 2,556 people through 1 water system.
Water bodies near East Williston (V)
East Williston (V) is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving East Williston (V)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| EAST WILLISTON (V) | NY2902820 | 2,556 | GWP |
How East Williston (V) compares
Full New York rankings →East Williston (V)'s score of 86.6/100 is above the average of 74/100 among major New York cities. It outscores 9 of 10 nearby cities.
Nearby cities
View New York rankings →About East Williston (V), NY
Wikipedia →East Williston is an incorporated village in the Town of North Hempstead in Nassau County, on Long Island, in New York, United States. The population was 2,645 at the time of the 2020 census.
Learn more about your water
Guides and resources related to East Williston (V)'s water quality findings.
Explore water quality across Nassau
Frequently asked questions
Is East Williston (V), NY tap water safe to drink?
East Williston (V)'s water quality earned a grade of A- (86.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #396 out of 855 cities tested in New York.
What contaminants are in East Williston (V)'s water?
Lead was measured at 0.0 ppb (90th percentile). 3 violations are on record.
How is East Williston (V)'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 East Williston (V)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does East Williston (V)'s water come from?
East Williston (V)'s water is sourced from Purchased ground water. The city has 1 water system serving approximately 2,556 residents.
Is East Williston (V)'s groundwater at risk of contamination?
East Williston (V) 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 3 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 East Williston (V)'s water compare to other cities?
East Williston (V) ranks #396 out of 855 cities in New York (better than 54% of state cities) and #4599 out of 15744 cities nationally (71th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does East Williston (V)'s small water system affect quality?
East Williston (V)'s system serves approximately 2,556 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 3 violations on record.