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Non-Transient Non-Community Water System · PWS IL3095893

Olin Winchester LLC

East Alton, Illinois 62024 - drinking water served from surface water sources to 3,250 people, tracked in EPA SDWIS and UCMR5.

3,250
People served
151
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 151 drinking-water violations at Olin Winchester LLC - above the Illinois per-system average.

151
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
3,250
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Olin Winchester LLC

Olin Winchester LLC is a private-owned non-transient non-community water system that delivers drinking water to 3,250 residents in East Alton, Illinois (Madison County) through 1 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 151 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 149 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 Simazine, recorded in 24 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Olin Winchester LLC's 151 violations sit above the Illinois 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
3,250
Total Violations
151
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Madison
School/Daycare
No
MCL Violations
0
Monitoring Violations
149
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Simazine MR 24 2017
Total Haloacetic Acids (HAA5) MR 9 2015
TTHM MR 9 2015
Lead and Copper Rule MR 5 2017
Glyphosate MR 5 2017
OXAMYL MR 5 2017
Carbofuran MR 5 2017
Heptachlor epoxide MR 5 2017
2,4-D MR 5 2017
2,4,5-TP MR 5 2017
Pentachlorophenol MR 5 2017
Chlordane MR 5 2017
1,2-DIBROMO-3-CHLOROPROPANE MR 5 2017
Toxaphene MR 5 2017
Endothall MR 5 2017
ETHYLENE DIBROMIDE MR 5 2017
BHC-GAMMA MR 5 2017
Methoxychlor MR 5 2017
LASSO MR 5 2017
Picloram MR 5 2017
Atrazine MR 5 2017
Diquat MR 5 2017
Total Polychlorinated Biphenyls (PCB) MR 5 2017
Heptachlor MR 5 2017
Nitrate MR 2 2019
LEAD AND COPPER RULE REVISIONS RPT 2 2024

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 Olin Winchester LLC.

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 IL3095893 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA, Bureau of Water is the primacy agency that licenses and inspects Olin Winchester LLC under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA, Bureau of Water

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 2 SDWIS / IL3095893 / 5200
2019 Nitrate MR 2 SDWIS / IL3095893 / 1040
2017 Simazine MR 24 SDWIS / IL3095893 / 2037
2017 Lead and Copper Rule MR 5 SDWIS / IL3095893 / 5000
2017 Glyphosate MR 5 SDWIS / IL3095893 / 2034
2017 OXAMYL MR 5 SDWIS / IL3095893 / 2036
2017 Carbofuran MR 5 SDWIS / IL3095893 / 2046
2017 Heptachlor epoxide MR 5 SDWIS / IL3095893 / 2067
2017 2,4-D MR 5 SDWIS / IL3095893 / 2105
2017 2,4,5-TP MR 5 SDWIS / IL3095893 / 2110
2017 Pentachlorophenol MR 5 SDWIS / IL3095893 / 2326
2017 Chlordane MR 5 SDWIS / IL3095893 / 2959
2017 1,2-DIBROMO-3-CHLOROPROPANE MR 5 SDWIS / IL3095893 / 2931
2017 Toxaphene MR 5 SDWIS / IL3095893 / 2020
2017 Endothall MR 5 SDWIS / IL3095893 / 2033

How Olin Winchester LLC Compares

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

Metric Olin Winchester LLC Illinois avg Federal benchmark
Total violations 151 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,250 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

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 Olin Winchester LLC water safe to drink? ▼
Olin Winchester LLC (PWS ID: IL3095893) has 151 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,250 people using Surface Water sources.
How many people does Olin Winchester LLC serve? ▼
Olin Winchester LLC serves 3,250 people in East Alton, Illinois. It is a Private-owned system using Surface Water water sources with 1 service connections.
What type of violations does Olin Winchester LLC have? ▼
Olin Winchester LLC has 151 total violations: 0 health-based violations (MCL exceedances or treatment failures), 149 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Olin Winchester LLC water? ▼
No PFAS testing data is available for Olin Winchester LLC under the EPA's UCMR5 monitoring program.
What water source does Olin Winchester LLC use? ▼
Olin Winchester LLC uses Surface Water as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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. 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.