Public water system record
Onslow Water Supply
Serves Onslow, Jones County, IA · 201 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Onslow 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
- Onslow Water Supply draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by Iowa, October 1990.
- Record on file since 1985, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 106 unknown out of 107 service lines.
Check whether Onslow 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 |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
Full record since 1985
EPA's records for Onslow Water Supply go back to 1985. Before October 19, 2016 they list no health-based violations and 27 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 18 |
| 1990s | 0 | 5 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 0 | 1 |
Enforcement actions
Iowa regulators took 2 formal enforcement actions against Onslow Water Supply in 1990, filed as 11 records in EPA's data. The most recent was a compliance order (no penalty) in October 1990.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 1, 1990 | Iowa | Compliance order (no penalty) | 13 violations: Fluoride, Nitrate, Selenium, Lead and Copper Rule, Arsenic |
| Oct 1, 1990 | Iowa | Administrative penalty | 4 violations: Fluoride, Nitrate, Selenium, Lead and Copper Rule |
Where the water comes from
Onslow Water Supply draws water from 1 well.
Annual water quality report
Onslow 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 Onslow 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