PlainWater
States → EPA Region 5 — Tribal Water Systems

Community Water System · PWS 055294402

Vermilion

Nett Lake, EPA Region 5 — Tribal Water Systems 55772 - drinking water served from groundwater sources to 2,486 people, tracked in EPA SDWIS and UCMR5.

2,486
People served
251
EPA violations
13
Health-based
Untested
UCMR5 result

The verdict

EPA records 251 drinking-water violations at Vermilion, 5% of them health-based.

251
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
2,486
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Vermilion

Vermilion is a native american-owned community water system that delivers drinking water to 2,486 residents in Nett Lake, EPA Region 5 — Tribal Water Systems through 220 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 251 total violations for this system , of which 13 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 222 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 Coliform (TCR), recorded in 25 violations (MR). 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
2,486
Total Violations
251
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
220
School/Daycare
No
MCL Violations
13
Monitoring Violations
222
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 25 2013
Arsenic MCL 12 2024
Gross Alpha, Excl. Radon and U MR 11 1993
Lead and Copper Rule MR 7 2013
Nitrate MR 7 2019
Chlorine MR 4 2019
BHC-GAMMA MR 4 2017
Dalapon MR 4 2017
Endothall MR 4 2017
Picloram MR 4 2017
Aldicarb sulfoxide MR 4 2017
Carbofuran MR 4 2017
Aldicarb MR 4 2017
Heptachlor MR 4 2017
Heptachlor epoxide MR 4 2017
2,4-D MR 4 2017
2,4,5-TP MR 4 2017
HEXACHLOROBENZENE MR 4 2017
Benzo(a)pyrene MR 4 2017
Pentachlorophenol MR 4 2017
ETHYLENE DIBROMIDE MR 4 2017
Chlordane MR 4 2017
Hexachlorocyclopentadiene MR 4 2017
LASSO MR 4 2017
Endrin MR 4 2017
Atrazine MR 4 2017
2,3,7,8-TCDD MR 4 2017
Methoxychlor MR 4 2017
Di(2-ethylhexyl) phthalate MR 4 2017
Diquat MR 4 2017

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 Vermilion.

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 055294402 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
2025 Consumer Confidence Rule Other 2 SDWIS / 055294402 / 7000
2024 Arsenic MCL 12 SDWIS / 055294402 / 1005
2023 Revised Total Coliform Rule Other 4 SDWIS / 055294402 / 8000
2019 Nitrate MR 7 SDWIS / 055294402 / 1040
2019 Chlorine MR 4 SDWIS / 055294402 / 0999
2019 Revised Total Coliform Rule RPT 4 SDWIS / 055294402 / 8000
2017 BHC-GAMMA MR 4 SDWIS / 055294402 / 2010
2017 Dalapon MR 4 SDWIS / 055294402 / 2031
2017 Endothall MR 4 SDWIS / 055294402 / 2033
2017 Picloram MR 4 SDWIS / 055294402 / 2040
2017 Aldicarb sulfoxide MR 4 SDWIS / 055294402 / 2043
2017 Carbofuran MR 4 SDWIS / 055294402 / 2046
2017 Aldicarb MR 4 SDWIS / 055294402 / 2047
2017 Heptachlor MR 4 SDWIS / 055294402 / 2065
2017 Heptachlor epoxide MR 4 SDWIS / 055294402 / 2067

How Vermilion Compares

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

Metric Vermilion EPA Region 5 — Tribal Water Systems avg Federal benchmark
Total violations 251 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,486 - 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 Vermilion water safe to drink? ▼
Vermilion (PWS ID: 055294402) has 251 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,486 people using Groundwater sources.
How many people does Vermilion serve? ▼
Vermilion serves 2,486 people in Nett Lake, EPA Region 5 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 220 service connections.
What type of violations does Vermilion have? ▼
Vermilion has 251 total violations: 13 health-based violations (MCL exceedances or treatment failures), 222 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Vermilion water? ▼
No PFAS testing data is available for Vermilion under the EPA's UCMR5 monitoring program.
What water source does Vermilion use? ▼
Vermilion 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.