Public water system · IL1131000
ActiveStanford
At a glance
Stanford (PWSID IL1131000) is an active community water system in McLean County, Illinois. It reports serving 600 people through 280 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2003.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
280
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Stanford compare with other water systems in McLean County?
By EPA's size categories, Stanford is a small system (501 to 3,300 people). McLean County has 79 active public water systems. Its population served is well below the county average of 2,159 people per system, and accounts for 0.4% of the 170,531 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Stanford is well below 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. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Stanford?
EPA lists Stanford as owned by a local government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 29 of the 79 active systems in McLean County (37%) are also owned by a local government.
Does Stanford have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2003. The violations listed here began between June 1977 and April 2003. By type: 5 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 as resolved and 3 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2003-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2003-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 1996-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1996-08-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-10-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 6 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.
Stanford: frequently asked questions
Who runs Stanford?
Stanford (PWSID IL1131000) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Stanford serve?
Stanford reports serving 600 people through 280 service connections in McLean County, Illinois.
Where does Stanford get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Stanford have any drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2003. 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 Stanford'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. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in April 2003. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Stanford's water quality report?
As a community water system, Stanford 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 McLean County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bloomington | McLean | 77,610 | Community | Surface water |
| Normal | McLean | 52,736 | Community | Groundwater |
| Illinois State University-Normal | McLean | 6,600 | Community | Purchased groundwater |
| Le Roy | McLean | 3,498 | Community | Groundwater |
| Heyworth | McLean | 2,853 | Community | Groundwater |
| Lexington | McLean | 1,930 | 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, “Stanford, PWSID IL1131000, Illinois”, https://aquacensus.com/water-systems/illinois/stanford-il1131000 (data as of October 1, 2026).