Non-Transient Non-Community Water System · PWS IL3049031

3M Chemical Operations LLC

Cordova, Illinois 61242 - drinking water served from groundwater sources to 300 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

300
People served: 240
EPA violations: 8
Health-based: Untested
UCMR5 result

The verdict

EPA records 240 drinking-water violations at 3M Chemical Operations LLC, 3% of them health-based - above the Illinois per-system average.

240
Total EPA violations on record: 3%
Health-based (MCL / treatment failure): 300
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: 3M Chemical Operations LLC

3M Chemical Operations LLC is a private-owned non-transient non-community water system that delivers drinking water to 300 residents in Cordova, Illinois (Rock Island County) through 3 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 240 total violations for this system , of which 8 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 231 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is cis-1,2-Dichloroethylene, recorded in 10 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%).

3M Chemical Operations LLC's 240 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

300

Total Violations

240

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Non-Transient Non-Community
Owner Type: Private
Connections: 3
County: Rock Island
School/Daycare: No
MCL Violations: 4
Monitoring Violations: 231
Treatment Tech Violations: 4

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
cis-1,2-Dichloroethylene	MR	10	2010
Xylenes, Total	MR	10	2010
DICHLOROMETHANE	MR	10	2010
o-Dichlorobenzene	MR	10	2010
p-Dichlorobenzene	MR	10	2010
1,2-Dichloroethane	MR	10	2010
Carbon tetrachloride	MR	10	2010
Trichloroethylene	MR	10	2010
Tetrachloroethylene	MR	10	2010
CHLOROBENZENE	MR	10	2010
Benzene	MR	10	2010
Toluene	MR	10	2010
Ethylbenzene	MR	10	2010
1,2,4-Trichlorobenzene	MR	10	2010
Vinyl chloride	MR	10	2010
trans-1,2-Dichloroethylene	MR	10	2010
1,1,1-Trichloroethane	MR	10	2010
1,2-Dichloropropane	MR	10	2010
Styrene	MR	10	2010
1,1,2-Trichloroethane	MR	10	2010
1,1-Dichloroethylene	MR	10	2010
Bromate	MR	7	2008
Lead and Copper Rule	MR	6	2007
Lead and Copper Rule	TT	4	2004
Coliform (TCR)	MCL	4	2006
Coliform (TCR)	MR	3	1995
Nitrate	MR	3	2008
E. COLI	MR	2	2025

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 3M Chemical Operations 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 IL3049031 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 3M Chemical Operations 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
2025	E. COLI	MR	2	SDWIS / IL3049031 / 3014
2010	cis-1,2-Dichloroethylene	MR	10	SDWIS / IL3049031 / 2380
2010	Xylenes, Total	MR	10	SDWIS / IL3049031 / 2955
2010	DICHLOROMETHANE	MR	10	SDWIS / IL3049031 / 2964
2010	o-Dichlorobenzene	MR	10	SDWIS / IL3049031 / 2968
2010	p-Dichlorobenzene	MR	10	SDWIS / IL3049031 / 2969
2010	1,2-Dichloroethane	MR	10	SDWIS / IL3049031 / 2980
2010	Carbon tetrachloride	MR	10	SDWIS / IL3049031 / 2982
2010	Trichloroethylene	MR	10	SDWIS / IL3049031 / 2984
2010	Tetrachloroethylene	MR	10	SDWIS / IL3049031 / 2987
2010	CHLOROBENZENE	MR	10	SDWIS / IL3049031 / 2989
2010	Benzene	MR	10	SDWIS / IL3049031 / 2990
2010	Toluene	MR	10	SDWIS / IL3049031 / 2991
2010	Ethylbenzene	MR	10	SDWIS / IL3049031 / 2992
2010	1,2,4-Trichlorobenzene	MR	10	SDWIS / IL3049031 / 2378

How 3M Chemical Operations LLC Compares

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

Metric	3M Chemical Operations LLC	Illinois avg	Federal benchmark
Total violations	240	69.4	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	8	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	300	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 3M Chemical Operations LLC water safe to drink? ▼

3M Chemical Operations LLC (PWS ID: IL3049031) has 240 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 300 people using Groundwater sources.

How many people does 3M Chemical Operations LLC serve? ▼

3M Chemical Operations LLC serves 300 people in Cordova, Illinois. It is a Private-owned system using Groundwater water sources with 3 service connections.

What type of violations does 3M Chemical Operations LLC have? ▼

3M Chemical Operations LLC has 240 total violations: 8 health-based violations (MCL exceedances or treatment failures), 231 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in 3M Chemical Operations LLC water? ▼

No PFAS testing data is available for 3M Chemical Operations LLC under the EPA's UCMR5 monitoring program.

What water source does 3M Chemical Operations LLC use? ▼

3M Chemical Operations LLC uses Groundwater 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.