Public water system record
Ryans Lot
On record as serving Missoula, Missoula County, MT · Serves 34 people
Federal records show 2 health-based violations and 16 monitoring/reporting issues for Ryans Lot in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 16
Key facts
- Ryans Lot draws water from 1 well.
- Most recent formal enforcement: compliance order with a penalty by Montana, March 2009.
- Record on file since 2002, with 11 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 15 service lines.
Check whether Ryans Lot 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 | Aug 30, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Feb 1, 2018 | 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 |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Groundwater Rule
OTHER
|
Jun 1, 2023 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
May 1, 2022 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
May 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Jun 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Dec 1, 2016 | Resolved |
Full record since 2002
EPA's records for Ryans Lot go back to 2002. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 115 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 9 | 104 |
| 2010 to October 18, 2016 | 2 | 11 |
| October 19, 2016 to 2019 | 1 | 6 |
| 2020s | 1 | 10 |
Most recent health-based violation before October 19, 2016: Groundwater Rule, began January 2015, Resolved.
Show all 11 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
Jan 1, 2015 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Dec 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2009 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2005 | Resolved |
Enforcement actions
Montana regulators took 1 formal enforcement action against Ryans Lot and issued 1 boil water order between 2008 and 2009. The most recent was a compliance order with a penalty in March 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 6, 2009 | Montana | Compliance order with a penalty | 10 violations (9 health-based): Total Coliform |
| Jul 2, 2008 | Montana | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
Groundwater Rule
2 incidentsThe 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 each of these violations.
Where the water comes from
Ryans Lot draws water from 1 well.
Annual water quality report
Ryans Lot 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 Ryans Lot 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 Montana.
Certified drinking water labs by state EPA guidance for private wells