Public water system record
Village of Mason City
Serves Mason City, Custer County, NE · 171 people served
Federal records show 4 health-based violations and 1 monitoring/reporting issue for Village of Mason City in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 1
Key facts
- Village of Mason City draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by Nebraska, September 2018.
- Record on file since 1997, with 10 health-based violations before October 19, 2016.
- Lead pipe inventory: 2 lead and 1 unknown out of 115 service lines.
Check whether Village of Mason City 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 |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Aug 1, 2018 | Resolved | Yes |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Sep 1, 2017 | Resolved | Yes |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Dec 22, 2016 | Resolved | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Oct 1, 2016 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 | Active |
Full record since 1997
EPA's records for Village of Mason City go back to 1997. Before October 19, 2016 they list 10 health-based violations (10 resolved) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 5 | 1 |
| 2000s | 3 | 3 |
| 2010 to October 18, 2016 | 2 | 0 |
| October 19, 2016 to 2019 | 3 | 0 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Revised Total Coliform Rule (acute), began October 2016, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule (acute)
Contaminant limit exceeded
|
Oct 1, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1997 | Resolved |
Enforcement actions
Nebraska regulators took 1 formal enforcement action against Village of Mason City in 2018. The most recent was a compliance order (no penalty) in September 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 21, 2018 | Nebraska | Compliance order (no penalty) | 2 violations (2 health-based): Revised Total Coliform Rule |
What the violations mean
Revised Total Coliform Rule
4 incidentsThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Village of Mason City draws water from 2 wells.
Annual water quality report
Village of Mason City 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 Village of Mason City 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 Nebraska.
Certified drinking water labs by state EPA guidance for private wells