Public water system record
Danbury Water Supply
Serves Danbury, Woodbury County, IA · 320 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Danbury Water Supply in the last ten years. The most serious issue in this window was a resolved Nitrate violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 0
Key facts
- Danbury Water Supply draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrate, 10.8 mg/L, federal limit 10 mg/L (1.1 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by Iowa, October 2010.
- Record on file since 1980, with 12 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 208 service lines.
Check whether Danbury 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 |
|---|---|---|---|---|
|
Nitrate
Contaminant limit exceeded
Measured 10.8 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jun 1, 2025 | Resolved | Yes |
Full record since 1980
EPA's records for Danbury Water Supply go back to 1980. Before October 19, 2016 they list 12 health-based violations (7 resolved, 5 archived by EPA without a recorded fix) and 12 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 6 | 2 |
| 1990s | 3 | 7 |
| 2000s | 3 | 2 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began December 2001, Resolved.
Show all 12 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
|
Dec 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Nov 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2000 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 1, 1999 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Sep 1, 1996 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 1995 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 30, 1986 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1985 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1984 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1983 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Jan 14, 1982 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 1980 | Resolved |
Enforcement actions
Iowa regulators took 4 formal enforcement actions against Danbury Water Supply between 1986 and 2010, filed as 7 records in EPA's data. The most recent was a compliance order (no penalty) in October 2010.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 26, 2010 | Iowa | Compliance order (no penalty) | 1 violation: Total Trihalomethanes (TTHMs) |
| Oct 26, 2010 | Iowa | Signed compliance agreement | 1 violation: Haloacetic Acids (HAA5) |
| Apr 7, 1992 | Iowa | Compliance order with a penalty | 5 violations: Carbon tetrachloride |
| Sep 30, 1986 | Iowa | Signed compliance agreement | 1 violation (1 health-based): Nitrate |
What the violations mean
Nitrate
1 incidentNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Danbury Water Supply draws water from 2 wells.
Annual water quality report
Danbury 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 Danbury 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