Public water system record
Danville Water Supply
Serves Danville, Des Moines County, IA · 923 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Danville Water Supply in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Danville Water Supply buys its water from Middletown Water Supply and Iowa Army Ammunition Plant.
- Most recent formal enforcement: signed compliance agreement by Iowa, August 2005.
- Record on file since 1979, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 103 unknown out of 737 service lines.
Check whether Danville 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 1, 2024 | Resolved | No |
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
|
Nov 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Nov 1, 2023 | Resolved |
Full record since 1979
EPA's records for Danville Water Supply go back to 1979. Before October 19, 2016 they list 20 health-based violations (11 resolved, 9 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 5 | 0 |
| 1980s | 4 | 1 |
| 2000s | 9 | 1 |
| 2010 to October 18, 2016 | 2 | 0 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2014, Resolved.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Apr 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Apr 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.128 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.143 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
|
Jul 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.14 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
|
Jan 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jul 1, 2004 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Oct 1, 1981 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Dec 21, 1979 | Archived |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Dec 21, 1979 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Apr 23, 1979 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Apr 23, 1979 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Apr 23, 1979 | Archived |
Enforcement actions
Iowa regulators took 1 formal enforcement action against Danville Water Supply in 2005, filed as 8 records in EPA's data. The most recent was a signed compliance agreement in August 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 23, 2005 | Iowa | Signed compliance agreement | 8 violations (8 health-based): Total Trihalomethanes (TTHMs) |
What the violations mean
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Danville Water Supply buys its water from Middletown Water Supply and Iowa Army Ammunition Plant. It lists no wells or intakes of its own.
Buys water from
- Middletown Water Supply Middletown, IA
- Iowa Army Ammunition Plant Middletown, IA
Annual water quality report
Danville 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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