Public water system record
Twin Lakes Utilities
Serves Rockwell City and Twin Lakes, Calhoun County, IA · 300 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Twin Lakes Utilities 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
- 2
Key facts
- Twin Lakes Utilities buys its water from Rockwell City Water Supply.
- Most recent formal enforcement: signed compliance agreement by Iowa, May 2000.
- Record on file since 1984, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 51 service lines.
Check whether Twin Lakes Utilities 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 |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Mar 1, 2022 | Resolved |
Full record since 1984
EPA's records for Twin Lakes Utilities go back to 1984. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 2 |
| 1990s | 3 | 3 |
| 2000s | 1 | 2 |
| 2010 to October 18, 2016 | 2 | 0 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Nitrite (acute), began March 2013, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrite (acute)
Contaminant limit exceeded
Measured 1.5 mg/L, federal limit 1 mg/L (1.5 times the limit)
|
Mar 1, 2013 | Resolved |
|
Nitrite (acute)
Contaminant limit exceeded
Measured 1.2 mg/L, federal limit 1 mg/L (1.2 times the limit)
|
Dec 1, 2012 | Resolved |
|
Nitrite (acute)
Contaminant limit exceeded
|
Nov 1, 2005 | Resolved |
|
Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
|
Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
Enforcement actions
Iowa regulators took 1 formal enforcement action against Twin Lakes Utilities in 2000. The most recent was a signed compliance agreement in May 2000.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 5, 2000 | Iowa | Signed compliance agreement | 1 violation (1 health-based): Nitrite |
Where the water comes from
Twin Lakes Utilities buys its water from Rockwell City Water Supply. It lists no wells or intakes of its own.
Buys water from
- Rockwell City Water Supply Rockwell City, IA
Annual water quality report
Twin Lakes Utilities 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 Twin Lakes Utilities 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