Is Hannibal (T), NY Tap Water Safe to Drink?
Graded A-, with 6 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
87.1/100
waterverge.com Hannibal (T), NY — Water Quality Report
Hannibal (T)'s drinking water received a grade of A- (87.1 out of 100), indicating good water quality. The city's 3 water systems serve approximately 2,420 residents using purchased surface water.
Lead levels were measured at 1.9 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 51 violations on record, including 0 health-based violations. 6 remain unresolved.
What to know about Hannibal (T)'s water
Hannibal (T) ranks #373 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.
As a small community water system, Hannibal (T) may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Hannibal (T), NY water safe to drink?
Hannibal (T)'s drinking water has significant quality concerns based on EPA testing data. With a grade of A- (87.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 3 water systems serve approximately 2,420 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Hannibal (T)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Hannibal (T)'s water quality assessment. Grade: A- (87.1/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Contaminants: Nitrate, Total Haloacetic Acids (HAA5), TTHM.
Federal disaster declaration (FEMA DR-4348). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3351). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Hannibal (T)'s water supply.
Well within EPA limits.
Violation history
Hannibal (T)'s water system has 51 total violations on record, including 0 health-based violations. 6 remain unresolved. 5 violations were issued in the last 5 years.
Flood & environmental risk
Oswego County has experienced 8 federally declared disasters since 1972. 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 Lk Ontario, Oswego River.
Where does Hannibal (T)'s water come from?
Hannibal (T)'s drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 3 water systems serving approximately 2,420 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Lk Ontario (lake), Oswego River (river).
What Hannibal (T) residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Hannibal (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.
Hannibal (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
Flood & disaster history
Oswego County has experienced 8 federally declared disasters since 1972. 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. | 1.9 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Hannibal (T) compares by contaminant
Explore where Hannibal (T) ranks among all New York cities for specific contaminants.
Water source & infrastructure
Where Hannibal (T)'s water comes from
Hannibal (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 private ownership and serves approximately 2,420 people through 3 water systems.
Water bodies near Hannibal (T)
Hannibal (T) is located near 2 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Hannibal (T)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| HANNIBAL TOWN WATER DISTRICT #2 | NY3730101 | 2,000 | SWP |
| COUNTRY HAVEN MOBILE HOME PARK | NY3730045 | 300 | GW |
| WOODLAND MOBILE HOME HAVEN | NY3700941 | 120 | GW |
How Hannibal (T) compares
Full New York rankings →Hannibal (T)'s score of 87.1/100 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 →Learn more about your water
Guides and resources related to Hannibal (T)'s water quality findings.
Explore water quality across Oswego
Frequently asked questions
Is Hannibal (T), NY tap water safe to drink?
Hannibal (T)'s water quality earned a grade of A- (87.1/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #373 out of 855 cities tested in New York.
What contaminants are in Hannibal (T)'s water?
Lead was measured at 1.9 ppb (90th percentile). 51 violations are on record.
How is Hannibal (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 Hannibal (T)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Hannibal (T)'s water come from?
Hannibal (T)'s water is sourced from Purchased surface water. The city has 3 water systems serving approximately 2,420 residents.
How does Hannibal (T)'s water compare to other cities?
Hannibal (T) ranks #373 out of 855 cities in New York (better than 56% of state cities) and #4251 out of 15744 cities nationally (73th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.