Is North Castle (T), NY Tap Water Safe to Drink?
Graded A-, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
87.4/100
waterverge.com North Castle (T), NY — Water Quality Report
North Castle (T)'s drinking water received a grade of A- (87.4 out of 100), indicating good water quality. The city's 5 water systems serve approximately 5,182 residents using purchased surface 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 19 violations on record, including 0 health-based violations. 7 remain unresolved.
What to know about North Castle (T)'s water
North Castle (T) ranks #357 out of 855 cities in New York for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
Water quality score
See methodology →Is North Castle (T), NY water safe to drink?
North Castle (T)'s drinking water has significant quality concerns based on EPA testing data. With a grade of A- (87.4/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 5,182 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for North Castle (T)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into North Castle (T)'s water quality assessment. Grade: A- (87.4/100).
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: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Key contaminant findings
Based on the most recent EPA sampling data for North Castle (T)'s water supply.
Well within EPA limits.
Violation history
North Castle (T)'s water system has 19 total violations on record, including 0 health-based violations. 7 remain unresolved.
Flood & environmental risk
Westchester 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 Byram River, Cross River, Croton R.
Where does North Castle (T)'s water come from?
North Castle (T)'s drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 5 water systems serving approximately 5,182 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Byram River (river), Cross River (river), Croton R (river).
What North Castle (T) residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in North Castle (T)'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.
North Castle (T)'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 droughtWestchester 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
Westchester 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 North Castle (T) compares by contaminant
Explore where North Castle (T) ranks among all New York cities for specific contaminants.
Water source & infrastructure
Where North Castle (T)'s water comes from
North Castle (T)'s drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 5,182 people through 5 water systems.
Water bodies near North Castle (T)
North Castle (T) is located near 3 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving North Castle (T)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| NORTH CASTLE WATER DISTRICT #1 | NY5903445 | 2,500 | SWP |
| NORTH CASTLE WATER DISTRICT #4 | NY5922909 | 1,225 | GW |
| NORTH CASTLE WATER DISTRICT #2 | NY5903446 | 1,200 | GW |
| NORTH CASTLE WATER DISTRICT #5 | NY5903492 | 225 | GWP |
| SAINT NERSESS ARMENIAN SEMINARY | NY5930011 | 32 | GW |
How North Castle (T) compares
Full New York rankings →North Castle (T)'s score of 87.4/100 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 North Castle (T), NY
Learn more about your water
Guides and resources related to North Castle (T)'s water quality findings.
Explore water quality across Westchester
Frequently asked questions
Is North Castle (T), NY tap water safe to drink?
North Castle (T)'s water quality earned a grade of A- (87.4/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #357 out of 855 cities tested in New York.
What contaminants are in North Castle (T)'s water?
Lead was measured at 0.0 ppb (90th percentile). 19 violations are on record.
How is North Castle (T)'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 North Castle (T)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does North Castle (T)'s water come from?
North Castle (T)'s water is sourced from Purchased surface water. The city has 5 water systems serving approximately 5,182 residents.
How does North Castle (T)'s water compare to other cities?
North Castle (T) ranks #357 out of 855 cities in New York (better than 58% of state cities) and #4063 out of 15744 cities nationally (74th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.