Is Guilford (T), NY Tap Water Safe to Drink?
Graded A, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
90.4/100
waterverge.com Guilford (T), NY — Water Quality Report
Guilford (T)'s drinking water received a grade of A (90.4 out of 100), indicating excellent water quality. The city's 2 water systems serve approximately 650 residents using 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 28 violations on record, including 0 health-based violations. 3 remain unresolved.
What to know about Guilford (T)'s water
Guilford (T) ranks #220 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, Guilford (T) may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Guilford (T), NY water safe to drink?
Guilford (T)'s drinking water has significant quality concerns based on EPA testing data. With a grade of A (90.4/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 650 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Guilford (T)
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Guilford (T)'s water quality assessment. Grade: A (90.4/100).
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-3565). Hurricane event — may have impacted local water infrastructure.
Contaminants: Arsenic.
Federal disaster declaration (FEMA DR-4397). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Guilford (T)'s water supply.
Well within EPA limits.
Violation history
Guilford (T)'s water system has 28 total violations on record, including 0 health-based violations. 3 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Chenango 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 Unadilla River, Susquehanna River, Chenango River.
Where does Guilford (T)'s water come from?
Guilford (T)'s drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 2 water systems serving approximately 650 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Unadilla River (river), Susquehanna River (river), Chenango River (river).
What Guilford (T) residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Guilford (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.
Guilford (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
Chenango 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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Guilford (T) compares by contaminant
Explore where Guilford (T) ranks among all New York cities for specific contaminants.
Water source & infrastructure
Where Guilford (T)'s water comes from
Guilford (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 650 people through 2 water systems.
Water bodies near Guilford (T)
Guilford (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 Guilford (T)
| System Name | PWSID | Population | Source |
|---|---|---|---|
| GUILFORD WATER DISTRICT | NY0801742 | 350 | SW |
| MOUNT UPTON WATER DISTRICT | NY0801743 | 300 | GW |
How Guilford (T) compares
Full New York rankings →Guilford (T)'s score of 90.4/100 is above the average of 74/100 among major New York cities. It outscores 10 of 10 nearby cities.
Nearby cities
View New York rankings →About Guilford (T), NY
Learn more about your water
Guides and resources related to Guilford (T)'s water quality findings.
Explore water quality across Chenango
Frequently asked questions
Is Guilford (T), NY tap water safe to drink?
Guilford (T)'s water quality earned a grade of A (90.4/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #220 out of 855 cities tested in New York.
What contaminants are in Guilford (T)'s water?
Lead was measured at 0.0 ppb (90th percentile). 28 violations are on record.
How is Guilford (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 Guilford (T)?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Guilford (T)'s water come from?
Guilford (T)'s water is sourced from Surface water. The city has 2 water systems serving approximately 650 residents.
How does Guilford (T)'s water compare to other cities?
Guilford (T) ranks #220 out of 855 cities in New York (better than 74% of state cities) and #2263 out of 15744 cities nationally (86th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.