Public water system record
Ryan Water Supply
Serves Ryan, Delaware County, IA · 350 people served
Federal records show 1 health-based violation and 7 monitoring/reporting issues for Ryan Water Supply in the last ten years. The most serious issue in this window was a resolved Nitrite violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 7
Key facts
- Ryan Water Supply draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrite, 2.1 mg/L, federal limit 1 mg/L (2.1 times the limit), 2018.
- Record on file since 1986, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 316 service lines.
Check whether Ryan 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 |
|---|---|---|---|---|
|
Nitrite
Contaminant limit exceeded
Measured 2.1 mg/L, federal limit 1 mg/L (2.1 times the limit)
|
330 | Jan 1, 2018 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Nitrite
Monitoring and reporting
|
Nov 1, 2019 | Resolved |
|
Nitrite
Monitoring and reporting
|
Dec 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 1, 2017 | Resolved |
|
Nitrite
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2017 | Resolved |
Full record since 1986
EPA's records for Ryan Water Supply go back to 1986. Before October 19, 2016 they list no health-based violations and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 2 |
| 2000s | 0 | 5 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 1 | 6 |
| 2020s | 0 | 1 |
What the violations mean
Nitrite
1 incidentNitrite exceeded the federal limit
High nitrite is especially dangerous for infants under 6 months
Where the water comes from
Ryan Water Supply draws water from 2 wells.
Annual water quality report
Ryan 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 Ryan 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