Public water system record
Nauvoo
Serves Nauvoo, Hancock County, IL · 1,200 people served
Federal records show no health-based violations and 6 monitoring/reporting issues for Nauvoo 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
- 6
Key facts
- Nauvoo draws water from 1 surface water intake.
- Most recent formal enforcement: signed compliance agreement by Illinois, November 2008.
- Record on file since 1977, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 399 unknown out of 678 service lines.
Check whether Nauvoo 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 |
|---|---|---|
|
Chloramine
Monitoring and reporting
|
May 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 11, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
Full record since 1977
EPA's records for Nauvoo go back to 1977. Before October 19, 2016 they list 20 health-based violations (19 resolved, 1 archived by EPA without a recorded fix) and 69 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 9 |
| 1990s | 2 | 6 |
| 2000s | 18 | 53 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 6 |
Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began April 2009, Resolved.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 68 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Apr 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 85 µg/L, federal limit 60 µg/L (1.4 times the limit)
|
Jan 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 60 µg/L (1.4 times the limit)
|
Oct 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 60 µg/L (1.4 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
|
Apr 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 68 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1995 | Archived |
|
Lead and Copper Rule
Treatment technique failure
|
Jan 1, 1994 | Resolved |
Enforcement actions
Illinois regulators took 2 formal enforcement actions against Nauvoo between 2006 and 2008. The most recent was a signed compliance agreement in November 2008.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 19, 2008 | Illinois | Signed compliance agreement | 6 violations (6 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jul 11, 2006 | Illinois | Signed compliance agreement | 12 violations (12 health-based): Surface Water Treatment Rule |
Where the water comes from
Nauvoo draws water from 1 surface water intake.
Annual water quality report
Nauvoo 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