Public water system record
Koshkonong PWS
Serves Koshkonong, Oregon County, MO · 212 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Koshkonong PWS in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Koshkonong PWS draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent enforcement action: boil water order by Missouri, January 2015.
- Record on file since 1992, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 133 service lines.
Check whether Koshkonong PWS 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
Full record since 1992
EPA's records for Koshkonong PWS go back to 1992. Before October 19, 2016 they list 7 health-based violations (4 resolved, 3 archived by EPA without a recorded fix) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 7 | 7 |
| 2000s | 0 | 5 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 1998, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1992 | Archived |
Enforcement actions
Missouri regulators took 1 formal enforcement action against Koshkonong PWS and issued 2 boil water orders between 1998 and 2015. The most recent was a boil water order in January 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 23, 2015 | Missouri | Boil water order | 1 violation |
| Feb 2, 1999 | Missouri | Signed compliance agreement | 5 violations (4 health-based): Total Coliform |
| Oct 26, 1998 | Missouri | Boil water order | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Koshkonong PWS draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Koshkonong PWS 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 Koshkonong PWS 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 Missouri.
Certified drinking water labs by state EPA guidance for private wells