Public water system record
Mark West Acres MWC
Serves an area of Sonoma County, CA · 61 people served
Federal records show no health-based violations and no monitoring or reporting issues for Mark West Acres MWC 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
- 0
Key facts
- Mark West Acres MWC draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2001.
- Record on file since 1980, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 22 service lines.
Check whether Mark West Acres MWC 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, and no monitoring or reporting violations either.
Full record since 1980
EPA's records for Mark West Acres MWC go back to 1980. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 11 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 9 |
| 1990s | 4 | 2 |
| 2000s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began October 2001, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1996 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Mark West Acres MWC in 2001. The most recent was a compliance order (no penalty) in December 2001.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 5, 2001 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Mark West Acres MWC draws water from 1 well.
Annual water quality report
Mark West Acres MWC 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 Mark West Acres MWC 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 California.
Certified drinking water labs by state EPA guidance for private wells