Public water system record
Holy Cross Water Supply
Serves Holy Cross, Dubuque County, IA · 356 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Holy Cross Water Supply 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
- 3
Key facts
- Holy Cross Water Supply draws water from 1 well.
- Record on file since 1988, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 6 unknown out of 171 service lines.
Check whether Holy Cross Water Supply 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 |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Aug 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Aug 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2023 | Resolved |
Full record since 1988
EPA's records for Holy Cross Water Supply go back to 1988. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 8 |
| 1990s | 1 | 3 |
| 2000s | 1 | 2 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began April 2003, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1994 | Resolved |
Where the water comes from
Holy Cross Water Supply draws water from 1 well.
Annual water quality report
Holy Cross Water Supply 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 Holy Cross Water Supply 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 Iowa.
Certified drinking water labs by state EPA guidance for private wells