Public water system record
Hunnewell PWS
Serves Hunnewell, Shelby County, MO · 184 people served
Federal records show 5 health-based violations and 7 monitoring/reporting issues for Hunnewell PWS in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 5
- Resolved
- 5
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 7
Key facts
- Hunnewell PWS buys its water from Shelby County PWSD 1.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 89 µg/L, federal limit 80 µg/L (1.1 times the limit), 2025.
- Record on file since 1992, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 85 service lines.
Check whether Hunnewell PWS 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
220 | Apr 1, 2025 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 65 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
220 | Jan 1, 2025 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 89 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
220 | Jan 1, 2025 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 60.6 µg/L, federal limit 60 µg/L (at or just above the limit)
|
220 | Oct 1, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86.8 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
220 | Oct 1, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
RPT
|
Sep 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 23, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 23, 2025 | Resolved |
|
Public Notice
OTHER
|
Apr 21, 2025 | Resolved |
|
Public Notice
OTHER
|
Apr 21, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
Full record since 1992
EPA's records for Hunnewell PWS go back to 1992. Before October 19, 2016 they list no health-based violations and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 3 |
| 2000s | 0 | 1 |
| 2020s | 5 | 7 |
What the violations mean
Total Trihalomethanes (TTHMs)
3 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Haloacetic Acids (HAA5)
2 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Hunnewell PWS buys its water from Shelby County PWSD 1. It lists no wells or intakes of its own. 1 other community water system buys water from Hunnewell PWS.
Buys water from
- Shelby County PWSD 1 Shelbyville, MO
Community systems that buy water from it
- Shelby County PWSD 1 Shelbyville, MO
Annual water quality report
Hunnewell PWS 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 Hunnewell PWS 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 Missouri.
Certified drinking water labs by state EPA guidance for private wells