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Nett Lake, MN Tap Water Quality 2026

Water quality report for Nett Lake, MN — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Nett Lake's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Nett Lake PWSID: 055294401 Updated: 2026 Q2
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1 violation currently open

Lead is 0.26 ppb, 2% of the action level. PFAS has never been sampled at this system.

D

Nett Lake earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 0.26 ppb — 2% of the federal action level
PFAS never sampled at this system
97 violations since 2015, 22 health-based
1 violation currently open
Nett Lake's lead level vs. all Minnesota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.26 ppb — 2% of the federal action level
✓ Lower lead than 100% of Minnesota utilities
Population Served
107
~121 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 97 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
2% of EPA action level
0.26 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
127.7% of EPA action level
1,660 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 0.26 ppb, 2% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2025 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Revised Total Coliform Rule TREATMENT TECHNIQUE — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 5 PCI/L 5 pCi/L 2021 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 UG/L 5 pCi/L 2021 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2021 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2020 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7.2 PCI/L 5 pCi/L 2019 Resolved
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 UG/L 5 pCi/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 5.8 PCI/L 5 pCi/L 2019 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2018 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2017 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2017–2019 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2017–2019 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2017–2019 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2017–2019 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2017–2019 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2017–2019 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2017–2019 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2017–2019 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2017–2019 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2017–2019 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2017–2019 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2017–2019 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2017–2019 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2017–2019 Resolved
Barium MONITORING AND REPORTING — 2 mg/L 2017–2019 Resolved
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2017–2019 Resolved
Chromium MONITORING AND REPORTING — 0.1 mg/L 2017–2019 Resolved
CYANIDE MONITORING AND REPORTING — 0.2 mg/L 2017–2019 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2017–2019 Resolved
Mercury MONITORING AND REPORTING — 0.002 mg/L 2017–2019 Resolved
Nickel MONITORING AND REPORTING — — 2017–2019 Resolved
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2017–2019 Resolved
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2017–2019 Resolved
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2017–2019 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2017–2019 Resolved
Selenium MONITORING AND REPORTING — 0.05 mg/L 2017–2019 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2017–2019 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2017–2019 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2017–2019 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2017–2019 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2017–2019 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2017–2019 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2017–2019 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2017–2019 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2017–2019 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2017–2019 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2017–2019 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2017–2019 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2017–2019 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2017–2019 Resolved
Aldicarb sulfoxide MONITORING AND REPORTING — — 2017–2019 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2017–2019 Resolved
Aldicarb MONITORING AND REPORTING — — 2017–2019 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2017–2019 Resolved
LASSO MONITORING AND REPORTING — — 2017–2019 Resolved
2,3,7,8-TCDD MONITORING AND REPORTING — 0.00000003 mg/L 2017–2019 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2017–2019 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2017–2019 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2017–2019 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2017–2019 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2017–2019 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2017–2019 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2017–2019 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2017–2019 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2017–2019 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2017–2019 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2017–2019 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2016 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 5.775 PCI/L 5 pCi/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 5.66 PCI/L 5 pCi/L 2016 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 97 recorded since 2015 (22 health-based).

About the Main Water System

Utility Nett Lake
PWSID 055294401
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 107
Service connections 121
Systems serving this area 1
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Nett Lake tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 0.26 ppb, 2% of the action level.
Does Nett Lake water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Nett Lake? ▼
Nett Lake (PWSID 055294401). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-10-21. No significant deficiencies were recorded.

What Should Nett Lake Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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