Public water system record
Sentinel Gap Water Assn
Serves Schwana, Grant County, WA · 226 people served
Federal records show no health-based violations and 4 monitoring/reporting issues for Sentinel Gap Water Assn 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
- Sentinel Gap Water Assn draws water from 1 well.
- Most recent formal enforcement: signed compliance agreement by Washington, August 2006.
- Record on file since 1979, with 6 health-based violations before October 19, 2016.
Check whether Sentinel Gap Water Assn 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, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2017 | Resolved |
Full record since 1979
EPA's records for Sentinel Gap Water Assn go back to 1979. Before October 19, 2016 they list 6 health-based violations (6 archived by EPA without a recorded fix) and 32 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 9 |
| 1990s | 4 | 4 |
| 2000s | 2 | 16 |
| 2010 to October 18, 2016 | 0 | 3 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began March 2005, Archived.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2005 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1998 | Archived |
Enforcement actions
Washington regulators took 2 formal enforcement actions against Sentinel Gap Water Assn between 1999 and 2006. The most recent was a signed compliance agreement in August 2006.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 16, 2006 | Washington | Signed compliance agreement | 9 violations: Total Coliform |
| Apr 19, 1999 | Washington | Signed compliance agreement | 6 violations (4 health-based): Lead and Copper Rule, Total Coliform |
Where the water comes from
Sentinel Gap Water Assn draws water from 1 well.
Annual water quality report
Sentinel Gap Water Assn 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 Sentinel Gap Water Assn 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 Washington.
Certified drinking water labs by state EPA guidance for private wells