Is Guilderland, NY tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Guilderland Town Water District.
Guilderland Town Water District supplies Guilderland (30,000 people).
Water system
Guilderland Town Water District
30,000 people · Surface water · EPA ID NY0100205
Buys treated water from Bethlehem Water District No 1, Albany City Water System.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 2.8 ppb at the 90th percentile (Dec 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 3
Across New York, 31 of 322 water systems EPA tested had PFAS above a 2024 federal limit, and 16 systems were above the lead action level in results from the last five years. New York results.
Guilderland homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Guilderland town (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Schenectady 7 mi Schenectady City Water Works | None above limits | 3 ppb |
| Rotterdam 8 mi Rotterdam Water District #5 | None above limits | 0.83 ppb |
| Albany 9 mi Albany City Water System | None above limits | 13 ppb |
| Colonie 9 mi Latham Water District | None above limits | 2 ppb |
| Bethlehem 11 mi Bethlehem Water District No 1 | None above limits | 1.02 ppb |
| Glenville 13 mi Glenville Water District #11 | None above limits | 4.1 ppb |
Guilderland ZIP codes (6)
- 12009
- 12084
- 12085
- 12203
- 12222
- 12303
Questions
Is Guilderland tap water safe to drink?
Guilderland Town Water District had 3 health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Guilderland, NY?
Guilderland Town Water District, which serves 30,000 people.
Does Guilderland tap water have PFAS?
None detected above EPA's reporting limits. Guilderland Town Water District had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Guilderland homes have lead pipes?
Census estimates put 55% of Guilderland homes as built before 1980 (New York: 74%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Guilderland Town Water District's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.