Is Unadilla (T), NY Tap Water Safe to Drink?
Graded B- — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
71.3/100
waterverge.com Unadilla (T), NY — Water Quality Report
Unadilla (T)'s drinking water received a grade of B- (71.3 out of 100), indicating fair water quality. The city's 4 water systems serve 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 130 violations on record, including 4 health-based violations. 20 remain unresolved.
What to know about Unadilla (T)'s water
Unadilla (T) ranks #699 out of 855 cities in New York for water quality, placing it among the lowest-rated in the state.
Unadilla (T) 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, Unadilla (T) may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 12 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Unadilla (T), NY water safe to drink?
Unadilla (T)'s drinking water has significant quality concerns based on EPA testing data. With a grade of B- (71.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 4 water systems serve approximately 559 residents using groundwater (wells).
Recent water quality updates for Unadilla (T)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Unadilla (T)'s water quality assessment. Grade: B- (71.3/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
1 health-based. Contaminants: Stage 1 Disinfectants and Disinfection Byproducts Rule.
Federal disaster declaration (FEMA DR-3565). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4129). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Unadilla (T)'s water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Unadilla (T)'s water system has 130 total violations on record, including 4 health-based violations. 20 remain unresolved. 12 violations were issued in the last 5 years.
Flood & environmental risk
Otsego County has experienced 6 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.
Where does Unadilla (T)'s water come from?
Unadilla (T)'s drinking water comes from groundwater (wells), supplied by 4 water systems serving approximately 559 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Unadilla (T) residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Unadilla (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.
Unadilla (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
Otsego County has experienced 6 federally declared disasters since 1996. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Unadilla (T)'s water supply, we recommend the following filter types.
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 |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.36 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Unadilla (T) compares by contaminant
Explore where Unadilla (T) ranks among all New York cities for specific contaminants.
Water source & infrastructure
Where Unadilla (T)'s water comes from
Unadilla (T)'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 4 water systems.
Water systems serving Unadilla (T)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MEADOW CREST MOBILE HOME PARK | NY3822721 | 200 | GW |
| MEADOW VALLEY MOBILE HOME PARK | NY3822687 | 152 | GW |
| SIDNEY-UNADILLA TRAILER PARK | NY3801586 | 122 | GW |
| WELLS BRIDGE WATER ASSOC. | NY3800159 | 85 | GW |
How Unadilla (T) compares
Full New York rankings →Unadilla (T)'s score of 71.3/100 is on par with the average of 74/100 among major New York cities. It outscores 3 of 10 nearby cities. 7 of 10 nearby cities score higher.
Nearby cities
View New York rankings →About Unadilla (T), NY
Wikipedia →Oneonta is a city in southern Otsego County, New York, United States. It is one of the northernmost cities of Appalachia. Oneonta is home to the State University of New York at Oneonta and Hartwick College. SUNY Oneonta began as a normal school and a teacher's college in 1889, and Hartwick College moved into the city in 1928. The approximately 5,800 students from SUNY Oneonta and the approximately 1,500 students at Hartwick make up a significant percentage of the population of Oneonta. As of the 2020 census, Oneonta had a population of 13,079.
Learn more about your water
Guides and resources related to Unadilla (T)'s water quality findings.
Explore water quality across Otsego
Frequently asked questions
Is Unadilla (T), NY tap water safe to drink?
Unadilla (T)'s water quality earned a grade of B- (71.3/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #699 out of 855 cities tested in New York.
What contaminants are in Unadilla (T)'s water?
Lead was measured at 0.0 ppb (90th percentile). 130 violations are on record.
How is Unadilla (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 Unadilla (T)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Unadilla (T)'s water come from?
Unadilla (T)'s water is sourced from Groundwater. The city has 4 water systems serving approximately 559 residents.
What health violations has Unadilla (T)'s water system had?
Unadilla (T) has 4 health-based violations on record. The most recent violation was recorded in November 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 20 violations remain unresolved.
Is Unadilla (T)'s groundwater at risk of contamination?
Unadilla (T) 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 130 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 Unadilla (T)'s water compare to other cities?
Unadilla (T) ranks #699 out of 855 cities in New York (better than 18% of state cities) and #10581 out of 15744 cities nationally (33th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.