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States → EPA Region 5 — Tribal Water Systems

Community Water System · PWS 055294204

Inger

Cass Lake, EPA Region 5 — Tribal Water Systems 56633 - drinking water served from groundwater sources to 186 people, tracked in EPA SDWIS and UCMR5.

186
People served
59
EPA violations
20
Health-based
Untested
UCMR5 result

The verdict

EPA records 59 drinking-water violations at Inger, 34% of them health-based.

59
Total EPA violations on record
34%
Health-based (MCL / treatment failure)
186
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Inger

Inger is a native american-owned community water system that delivers drinking water to 186 residents in Cass Lake, EPA Region 5 — Tribal Water Systems through 49 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 59 total violations for this system , of which 20 (34%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 28 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 Arsenic, recorded in 10 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 5 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
186
Total Violations
59
Health-Based Violations
20
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
49
School/Daycare
No
MCL Violations
16
Monitoring Violations
28
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 10 2008
Coliform (TCR) MR 8 2011
Coliform (TCR) MCL 6 2005
Chlorine MR 5 2024
Revised Total Coliform Rule RPT 4 2024
Lead and Copper Rule TT 4 2023
Lead and Copper Rule MR 4 2020
Total Haloacetic Acids (HAA5) MR 3 2006
TTHM MR 3 2006
CYANIDE MR 2 2022
Gross Alpha, Excl. Radon and U MR 1 2008
Combined Uranium MR 1 2008
Consumer Confidence Rule Other 1 2006
Combined Radium (-226 and -228) MR 1 2008

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 Inger.

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 055294204 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 5 — Tribal Water Systems Drinking Water Authority

EPA Region 5 — Tribal Water Systems's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 05 regulator via EPA SDWIS

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 Chlorine MR 5 SDWIS / 055294204 / 0999
2024 Revised Total Coliform Rule RPT 4 SDWIS / 055294204 / 8000
2023 Lead and Copper Rule TT 4 SDWIS / 055294204 / 5000
2022 CYANIDE MR 2 SDWIS / 055294204 / 1024
2020 Lead and Copper Rule MR 4 SDWIS / 055294204 / 5000
2011 Coliform (TCR) MR 8 SDWIS / 055294204 / 3100
2008 Arsenic MCL 10 SDWIS / 055294204 / 1005
2008 Gross Alpha, Excl. Radon and U MR 1 SDWIS / 055294204 / 4000
2008 Combined Uranium MR 1 SDWIS / 055294204 / 4006
2008 Combined Radium (-226 and -228) MR 1 SDWIS / 055294204 / 4010
2006 Total Haloacetic Acids (HAA5) MR 3 SDWIS / 055294204 / 2456
2006 TTHM MR 3 SDWIS / 055294204 / 2950
2006 Consumer Confidence Rule Other 1 SDWIS / 055294204 / 7000
2005 Coliform (TCR) MCL 6 SDWIS / 055294204 / 3100

How Inger Compares

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

Metric Inger EPA Region 5 — Tribal Water Systems avg Federal benchmark
Total violations 59 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 20 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 186 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 5 — Tribal Water Systems.

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 Inger water safe to drink? ▼
Inger (PWS ID: 055294204) has 59 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 186 people using Groundwater sources.
How many people does Inger serve? ▼
Inger serves 186 people in Cass Lake, EPA Region 5 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 49 service connections.
What type of violations does Inger have? ▼
Inger has 59 total violations: 20 health-based violations (MCL exceedances or treatment failures), 28 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Inger water? ▼
No PFAS testing data is available for Inger under the EPA's UCMR5 monitoring program.
What water source does Inger use? ▼
Inger 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. 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.