Steuben County Water Quality

Name: Steuben County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Steuben County, New York: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Steuben County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

Perfluorooctanoic acid (PFOA)CORNING CITY4.0 ng/L federal MCL (2024) · US EPA12.2 ng/L

CORNING CITY12.2 ng/LSample date: 2023-05-23 to 2023-11-15

Lead (90th percentile)CORNING CITY15 µg/L federal action level · US EPA6.1 µg/L

CORNING CITY6.1 µg/LMonitoring period: 2021–2023

Perfluorobutanesulfonic acid (PFBS)CORNING CITY2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA6.7 ng/L

CORNING CITY6.7 ng/LSample date: 2023-05-23 to 2023-11-15

28 substances tested, none detected in this systemShow

Tested in this system: CORNING CITY

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
Lithium
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanoic acid (PFBA)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

1 city

Cities ranked by the records

1
CorningCORNING CITY
PFAS sample above a limitLead below action level
Open city report →

Showing 1 of 1 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Steuben County1 of 1 city report had a PFAS sample above a 2024 EPA limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in New York

Lead

0of 1 city above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in New York

Who supplies the county

Largest water systems

CorningCORNING CITY · NY5001209
10,300 served

Questions

Frequently asked

How does Steuben County tap water compare across cities?

PurityMap ranks 1 city in Steuben County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Corning's main water system: CORNING CITY · PWSID NY5001209 · Purity Score 50 (Poor) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Steuben County cities had a PFAS sample above a 2024 EPA limit?

1 of 1 Steuben County city report had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Corning (PFOA 12.2 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.

Is there lead in Steuben County tap water?

Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Steuben County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Next step

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