Public water system · NY4500186
ActiveWilton Water & Sewer Authority
At a glance
Wilton Water & Sewer Authority (PWSID NY4500186) is an active community water system in Saratoga County, New York. It reports serving 9,490 people through 3,796 service connections. Its primary water source is purchased surface water, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2022.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,490
Service connections
3,796
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Wilton Water & Sewer Authority compare with other water systems in Saratoga County?
By EPA's size categories, Wilton Water & Sewer Authority is a medium system (3,301 to 10,000 people). Saratoga County has 216 active public water systems, and Wilton Water & Sewer Authority is the 6th-largest of them by population served. Its population served is about 10 times the county average of 916 people per system, and accounts for 4.8% of the 197,820 people reported by systems filed under the county. Across New York, the 8,167 active systems average 2,374 people each. Nationally, the average active community water system reports serving 6,703 people, so Wilton Water & Sewer Authority is about 42% above that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New York has 2,281 active community water systems, 28% of the state's 8,167 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 399 New York systems (4.9%) list purchased surface water as their primary source.
Who owns and regulates Wilton Water & Sewer Authority?
EPA lists Wilton Water & Sewer Authority as under public/private ownership. The NY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 216 active systems in Saratoga County (0.9%) are also under public/private ownership.
Does Wilton Water & Sewer Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2022. The violations listed here began between July 2015 and January 2022. By type: 7 monitoring and reporting, 2 public notice, recordkeeping or other, 2 monitoring and 1 required treatment not met. The contaminant or rule involved most often is Haloacetic acids (HAA5) (3 of them). EPA lists 9 as resolved, 2 as archived and 1 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-09-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2018-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2017-09-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2017-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2017-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2015-07-31 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Wilton Water & Sewer Authority: frequently asked questions
Who runs Wilton Water & Sewer Authority?
Wilton Water & Sewer Authority (PWSID NY4500186) is a community water system under public/private ownership. It is regulated by the NY state drinking water program.
How many people does Wilton Water & Sewer Authority serve?
Wilton Water & Sewer Authority reports serving 9,490 people through 3,796 service connections in Saratoga County, New York.
Where does Wilton Water & Sewer Authority get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Wilton Water & Sewer Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2022. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Wilton Water & Sewer Authority's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Wilton Water & Sewer Authority's water quality report?
As a community water system, Wilton Water & Sewer Authority must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Saratoga County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clifton Park Water Authority | Saratoga | 35,000 | Community | Purchased surface water |
| Saratoga Springs City | Saratoga | 26,525 | Community | Surface water |
| Halfmoon Water District (Troy) | Saratoga | 15,000 | Community | Purchased surface water |
| Burnt Hills-Ballston Lk Wd | Saratoga | 10,000 | Community | Purchased surface water |
| Waterford Water Works (Purchase Troy) | Saratoga | 9,800 | Community | Purchased surface water |
| Malta Water District #1 | Saratoga | 8,950 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Wilton Water & Sewer Authority, PWSID NY4500186, New York”, https://aquacensus.com/water-systems/new-york/wilton-water-sewer-authority-ny4500186 (data as of October 1, 2026).