Twin Knolls Fourth/fifth Addition
PWSID: IA5784326
System Details
| Population Served | 90 |
| Service Connections | 36 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Cedar Rapids |
| Zip Code | 52408 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0100 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0030 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0010 mg/L | 0.015 mg/L | Below Action Level |
3 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-05-24 | | Open |
| | 2024-12-01 | | Open |
| | 2018-12-01 | | Open |
Violation History (34 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-01-01 | Major | Returned to Compliance |
| | 2023-05-13 | | Returned to Compliance |
| | 2023-05-13 | | Returned to Compliance |
| | 2022-10-12 | | Returned to Compliance |
| | 2022-08-01 | Major | Returned to Compliance |
| | 2022-08-01 | Major | Returned to Compliance |
| | 2022-08-01 | Major | Acknowledged |
| | 2022-08-01 | Major | Returned to Compliance |
| | 2022-08-01 | Major | Returned to Compliance |
| | 2022-08-01 | Major | Acknowledged |
| | 2022-07-13 | | Returned to Compliance |
| | 2022-07-01 | | Returned to Compliance |
| | 2022-07-01 | | Returned to Compliance |
| | 2022-07-01 | Major | Acknowledged |
| | 2022-07-01 | Major | Acknowledged |
| | 2022-04-01 | | Returned to Compliance |
| | 2022-04-01 | | Returned to Compliance |
| | 2022-04-01 | | Returned to Compliance |
| | 2021-12-01 | | Returned to Compliance |
| | 2021-12-01 | | Returned to Compliance |
| | 2021-09-01 | | Returned to Compliance |
| | 2021-09-01 | | Returned to Compliance |
| | 2021-06-01 | | Returned to Compliance |
| | 2016-06-01 | | Returned to Compliance |
| | 2014-04-01 | | Returned to Compliance |
| | 2014-01-01 | | Returned to Compliance |
| | 2013-08-01 | | Returned to Compliance |
| | 2013-07-01 | | Returned to Compliance |
| | 2013-07-01 | | Returned to Compliance |
| | 2012-07-26 | | Returned to Compliance |
| | 2012-07-01 | | Returned to Compliance |