Public water system record
Mount Vernon Water Works
Serves Mount Vernon, Posey County, IN · 6,426 people served
Federal records show no health-based violations and 4 monitoring/reporting issues for Mount Vernon Water Works 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
- 4
Key facts
- Mount Vernon Water Works draws water from 2 surface water intakes (1 of them for emergency, seasonal or other part-time use).
- Most recent enforcement action: boil water order by Indiana, March 2011.
- Record on file since 1979, with 37 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 0 unknown out of 3,086 service lines.
Check whether Mount Vernon Water Works 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
|
Aug 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2022 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 1979
EPA's records for Mount Vernon Water Works go back to 1979. Before October 19, 2016 they list 37 health-based violations (37 resolved) and 143 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 8 |
| 1980s | 0 | 16 |
| 1990s | 7 | 85 |
| 2000s | 28 | 16 |
| 2010 to October 18, 2016 | 2 | 18 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began April 2012, Resolved.
Show all 37 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.107 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Apr 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.121 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
|
Jan 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1244 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.159 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Jul 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0651 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 65.5 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 145.5 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
Apr 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Jan 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 61.83 µg/L, federal limit 60 µg/L (at or just above the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 128.88 µg/L, federal limit 80 µg/L (1.6 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 124.8 µg/L, federal limit 80 µg/L (1.6 times the limit)
|
Jul 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 100.5 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
Apr 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1151 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jan 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0621 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jan 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 117.9 µg/L, federal limit 80 µg/L (1.5 times the limit)
|
Oct 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 60.7 µg/L, federal limit 60 µg/L (at or just above the limit)
|
Oct 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0875 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 90 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
Apr 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2006 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2001 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2000 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2000 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1999 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1997 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1993 | Resolved |
Enforcement actions
Indiana regulators and EPA took 3 formal enforcement actions against Mount Vernon Water Works and issued 3 boil water orders between 1993 and 2011. The most recent was a boil water order in March 2011.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 7, 2011 | Indiana | Boil water order | 1 violation (1 health-based): Total Coliform |
| May 1, 2008 | Indiana | Compliance order with a penalty | 10 violations (10 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jul 18, 2007 | Indiana | Boil water order | 1 violation (1 health-based): Total Coliform |
| Jul 10, 2007 | Indiana | Boil water order | 1 violation (1 health-based): Total Coliform |
| May 4, 1998 | EPA | Compliance order (no penalty) | 2 violations: 1,2-DIBROMO-3-CHLOROPROPANE |
| Sep 23, 1993 | EPA | Compliance order (no penalty) | 2 violations: Nitrate |
Where the water comes from
Mount Vernon Water Works draws water from 2 surface water intakes (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Mount Vernon Water Works 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 Indiana.
Certified drinking water labs by state EPA guidance for private wells