Public water system record
Shannon
Serves Shannon, Carroll County, IL · 801 people served
Federal records show 20 health-based violations and 4 monitoring/reporting issues for Shannon in the last ten years. The most serious issue in this window was a resolved Combined Radium (-226 and -228) violation.
System profile
- Health-based violations, last 10 years
- 20
- Resolved
- 20
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Shannon draws water from 2 wells.
- Highest measured level in the last 10 years: Combined Radium (-226 and -228), 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit), 2020.
- Most recent formal enforcement: compliance order (no penalty) by EPA, September 2019.
- Record on file since 1977, with 15 health-based violations before October 19, 2016.
- Lead pipe inventory: 5 lead and 21 unknown out of 391 service lines.
Check whether Shannon 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 |
|---|---|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
340 | Apr 1, 2020 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Apr 1, 2020 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Jan 1, 2020 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 9 pCi/L, federal limit 5 pCi/L (1.8 times the limit)
|
340 | Jan 1, 2020 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Oct 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
340 | Oct 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
340 | Jul 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jan 1, 2019 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Oct 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
340 | Jul 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2018 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Oct 1, 2017 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 18 pCi/L, federal limit 15 pCi/L (1.2 times the limit)
|
340 | Jul 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Jul 1, 2017 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 19 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
340 | Apr 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7 pCi/L, federal limit 5 pCi/L (1.4 times the limit)
|
340 | Apr 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2017 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Resolved |
Full record since 1977
EPA's records for Shannon go back to 1977. Before October 19, 2016 they list 15 health-based violations (14 resolved, 1 archived by EPA without a recorded fix) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 2 | 0 |
| 1990s | 6 | 3 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 7 | 0 |
| October 19, 2016 to 2019 | 15 | 0 |
| 2020s | 4 | 4 |
Most recent health-based violation before October 19, 2016: Combined Radium (-226 and -228), began October 2016, Resolved.
Show all 15 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Oct 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jan 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Oct 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Jul 1, 2015 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
Apr 1, 2015 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 1995 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1994 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1994 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 1994 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1993 | Resolved |
|
Barium
Contaminant limit exceeded
|
Sep 11, 1990 | Resolved |
|
Barium
Contaminant limit exceeded
|
Nov 1, 1984 | Resolved |
|
Barium
Contaminant limit exceeded
|
Nov 1, 1981 | Archived |
Enforcement actions
Illinois regulators and EPA took 6 formal enforcement actions against Shannon between 2016 and 2019. The most recent was a compliance order (no penalty) in September 2019.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 13, 2019 | EPA | Compliance order (no penalty) | 26 violations (26 health-based): Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228) |
| Sep 13, 2019 | Illinois | Compliance order (no penalty) | 24 violations (24 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
| May 11, 2018 | EPA | Compliance order (no penalty) | 18 violations (18 health-based): Combined Radium (-226 and -228) |
| May 11, 2018 | Illinois | Compliance order (no penalty) | 23 violations (23 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
| Dec 19, 2016 | Illinois | Compliance order (no penalty) | 22 violations (22 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U |
| Dec 19, 2016 | EPA | Compliance order (no penalty) | 6 violations (6 health-based): Combined Radium (-226 and -228) |
What the violations mean
Combined Radium (-226 and -228)
15 incidentsTest results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Gross Alpha, Excl. Radon and U
5 incidentsTest results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Shannon draws water from 2 wells.
Annual water quality report
Shannon 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 Illinois.
Certified drinking water labs by state EPA guidance for private wells