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Community Water System · PWS NY4600073

Niskayuna Consolidated WD #11

Niskayuna, New York 12309 - drinking water served from groundwater sources to 22,287 people, tracked in EPA SDWIS and UCMR5.

22,287
People served
49
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 49 drinking-water violations at Niskayuna Consolidated WD #11 - below the New York per-system average.

49
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
22,287
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Niskayuna Consolidated WD #11

Niskayuna Consolidated WD #11 is a public/private-owned community water system that delivers drinking water to 22,287 residents in Niskayuna, New York (Schenectady County) through 8,100 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 49 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 48 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is TTHM, recorded in 4 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across New York, EPA tracks 8,098 public water systems serving 19,294,951 people, with 552,003 cumulative violations and 26,817 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 68.2 violations. Statewide, 129 of 332 UCMR5-tested systems have reported PFAS detections (38.9%).

Niskayuna Consolidated WD #11's 49 violations sit below the New York average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
22,287
Total Violations
49
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
8,100
County
Schenectady
School/Daycare
No
MCL Violations
0
Monitoring Violations
48
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 4 2021
Total Haloacetic Acids (HAA5) MR 4 2021
1,2,4-Trichlorobenzene MR 2 2019
Vinyl chloride MR 2 2019
trans-1,2-Dichloroethylene MR 2 2019
1,1,1-Trichloroethane MR 2 2019
Carbon tetrachloride MR 2 2019
Toluene MR 2 2019
Styrene MR 2 2019
p-Dichlorobenzene MR 2 2019
Ethylbenzene MR 2 2019
Benzene MR 2 2019
Trichloroethylene MR 2 2019
Tetrachloroethylene MR 2 2019
DICHLOROMETHANE MR 2 2019
1,1-Dichloroethylene MR 2 2019
1,1,2-Trichloroethane MR 2 2019
cis-1,2-Dichloroethylene MR 2 2019
1,2-Dichloroethane MR 2 2019
o-Dichlorobenzene MR 2 2019
1,2-Dichloropropane MR 2 2019
CHLOROBENZENE MR 2 2019
LEAD AND COPPER RULE REVISIONS RPT 1 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/12/2023 <2.00 ppt 2.00 ppt Not Detected
PFOA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/12/2023 <6.00 ppt 6.00 ppt Not Detected
PFBS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 7/12/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/12/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/12/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/12/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/12/2023 <20.00 ppt 20.00 ppt Not Detected
PFNA 7/12/2023 <4.00 ppt 4.00 ppt Not Detected
PFUnA 2/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFOS 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 2/27/2023 <20.00 ppt 20.00 ppt Not Detected
PFOA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 2/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFMPA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 2/27/2023 <5.00 ppt 5.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Niskayuna Consolidated WD #11.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NY4600073 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New York Drinking Water Authority

New York State Department of Health, Public Water Systems is the primacy agency that licenses and inspects Niskayuna Consolidated WD #11 under EPA-delegated authority.

Open NY regulator portal

Source: New York State Department of Health, Public Water Systems

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / NY4600073 / 5200
2021 TTHM MR 4 SDWIS / NY4600073 / 2950
2021 Total Haloacetic Acids (HAA5) MR 4 SDWIS / NY4600073 / 2456
2019 1,2,4-Trichlorobenzene MR 2 SDWIS / NY4600073 / 2378
2019 Vinyl chloride MR 2 SDWIS / NY4600073 / 2976
2019 trans-1,2-Dichloroethylene MR 2 SDWIS / NY4600073 / 2979
2019 1,1,1-Trichloroethane MR 2 SDWIS / NY4600073 / 2981
2019 Carbon tetrachloride MR 2 SDWIS / NY4600073 / 2982
2019 Toluene MR 2 SDWIS / NY4600073 / 2991
2019 Styrene MR 2 SDWIS / NY4600073 / 2996
2019 p-Dichlorobenzene MR 2 SDWIS / NY4600073 / 2969
2019 Ethylbenzene MR 2 SDWIS / NY4600073 / 2992
2019 Benzene MR 2 SDWIS / NY4600073 / 2990
2019 Trichloroethylene MR 2 SDWIS / NY4600073 / 2984
2019 Tetrachloroethylene MR 2 SDWIS / NY4600073 / 2987

How Niskayuna Consolidated WD #11 Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Niskayuna Consolidated WD #11 New York avg Federal benchmark
Total violations 49 68.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 3.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 22,287 2,383 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 8,098 regulated public water systems in New York.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Niskayuna Consolidated WD #11 water safe to drink? ▼
Niskayuna Consolidated WD #11 (PWS ID: NY4600073) has 49 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 22,287 people using Groundwater sources.
How many people does Niskayuna Consolidated WD #11 serve? ▼
Niskayuna Consolidated WD #11 serves 22,287 people in Niskayuna, New York. It is a Public/Private-owned system using Groundwater water sources with 8,100 service connections.
What type of violations does Niskayuna Consolidated WD #11 have? ▼
Niskayuna Consolidated WD #11 has 49 total violations: 0 health-based violations (MCL exceedances or treatment failures), 48 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Niskayuna Consolidated WD #11 water? ▼
No. Niskayuna Consolidated WD #11 was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Niskayuna Consolidated WD #11 use? ▼
Niskayuna Consolidated WD #11 uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.