Public water system record
Nett Lake
Serves an area of Koochiching County, MN that includes Nett Lake · 295 people served
Federal records show 20 health-based violations and 74 monitoring/reporting issues for Nett Lake in the last ten years, including an unresolved Groundwater Rule violation.
System profile
Source water
Groundwater
ZIP
55772
EPA system ID
055294401
- Health-based violations, last 10 years
- 20
- Resolved
- 19
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 74
Key facts
- Nett Lake draws water from 3 wells.
- Highest measured level in the last 10 years: Combined Radium (-226 and -228), 7.2 pCi/L, federal limit 5 pCi/L (1.4 times the limit), 2019.
- Record on file since 1991, with 10 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 14 unknown out of 97 service lines.
Check whether Nett Lake serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Oct 30, 2025 | Active | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Mar 1, 2023 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5 pCi/L, federal limit 5 pCi/L (at or just above the limit)
|
340 | Oct 1, 2021 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
340 | Apr 1, 2021 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2021 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Oct 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jul 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.2 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Oct 1, 2019 | Resolved | No |
|
Lead and Copper Rule
Treatment technique failure
|
350 | Sep 9, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jul 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
340 | Apr 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.8 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Oct 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jul 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jan 1, 2025 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1991
EPA's records for Nett Lake go back to 1991. Before October 19, 2016 they list 10 health-based violations (5 resolved, 5 archived by EPA without a recorded fix) and 17 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 10 |
| 2000s | 4 | 4 |
| 2010 to October 18, 2016 | 4 | 3 |
| October 19, 2016 to 2019 | 10 | 66 |
| 2020s | 9 | 7 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began October 2016, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Oct 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.775 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5.66 pCi/L, federal limit 5 pCi/L (1.1 times the limit)
|
Jan 1, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2008 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2008 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1996 | Archived |
What the violations mean
Combined Radium (-226 and -228)
17 incidentsTest results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Nett Lake draws water from 3 wells.
Annual water quality report
Nett Lake must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Nett Lake for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by EPA Region 5.
Certified drinking water labs by state EPA guidance for private wells