Public water system record
Lester Water Supply
Serves Lester, Lyon County, IA · 296 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Lester 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
- 1
Key facts
- Lester Water Supply buys its water from Lyon-Sioux RWS-Big Sioux.
- Most recent formal enforcement: signed compliance agreement by Iowa, May 2004.
- Record on file since 1979, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 124 service lines.
Check whether Lester 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 |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2017 | Resolved |
Full record since 1979
EPA's records for Lester Water Supply go back to 1979. Before October 19, 2016 they list 3 health-based violations (2 resolved, 1 archived by EPA without a recorded fix) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 1 | 0 |
| 1990s | 0 | 4 |
| 2000s | 2 | 2 |
| 2010 to October 18, 2016 | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 1 |
Most recent health-based violation before October 19, 2016: Combined Uranium, began January 2004, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2004 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Sep 5, 1979 | Archived |
Enforcement actions
Iowa regulators took 1 formal enforcement action against Lester Water Supply in 2004, filed as 5 records in EPA's data. The most recent was a signed compliance agreement in May 2004.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 12, 2004 | Iowa | Signed compliance agreement | 5 violations (3 health-based): Combined Uranium |
Where the water comes from
Lester Water Supply buys its water from Lyon-Sioux RWS-Big Sioux. It lists no wells or intakes of its own.
Buys water from
- Lyon-Sioux RWS-Big Sioux Rock Rapids, IA
Annual water quality report
Lester 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 Lester 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