Public water system record
Prairie Road Water District
Serves an area of Ouachita Parish, LA · 2,598 people served
Federal records show 24 health-based violations and 4 monitoring/reporting issues for Prairie Road Water District in the last ten years, including an unresolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 24
- Resolved
- 15
- Unresolved
- 1
- Archived by EPA
- 8
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Prairie Road Water District draws water from 3 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by Louisiana, October 2025.
- Record on file since 1993, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,119 service lines.
Check whether Prairie Road Water District 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 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2023 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Oct 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 3, 2020 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 24, 2019 |
Active
Enforcement action in place
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 24, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
|
220 | Oct 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Jul 21, 2023 | Resolved |
|
Public Notice
OTHER
|
Jul 12, 2023 | Resolved |
|
Public Notice
OTHER
|
Jul 23, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 31, 2014 | Resolved |
Full record since 1993
EPA's records for Prairie Road Water District go back to 1993. Before October 19, 2016 they list 20 health-based violations (19 resolved, 1 archived by EPA without a recorded fix) and 10 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 1 |
| 2000s | 17 | 7 |
| 2010 to October 18, 2016 | 2 | 2 |
| October 19, 2016 to 2019 | 3 | 0 |
| 2020s | 21 | 3 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2011, Resolved.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 98 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Oct 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 145 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
Oct 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 190 µg/L, federal limit 80 µg/L (2.4 times the limit)
|
Oct 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 203 µg/L, federal limit 80 µg/L (2.5 times the limit)
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 192 µg/L, federal limit 80 µg/L (2.4 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 200 µg/L, federal limit 80 µg/L (2.5 times the limit)
|
Apr 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 207 µg/L, federal limit 80 µg/L (2.6 times the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 201 µg/L, federal limit 80 µg/L (2.5 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 212 µg/L, federal limit 80 µg/L (2.7 times the limit)
|
Jul 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 202 µg/L, federal limit 80 µg/L (2.5 times the limit)
|
Apr 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 188 µg/L, federal limit 80 µg/L (2.4 times the limit)
|
Jan 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 189 µg/L, federal limit 80 µg/L (2.4 times the limit)
|
Oct 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 185 µg/L, federal limit 80 µg/L (2.3 times the limit)
|
Jul 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 170 µg/L, federal limit 80 µg/L (2.1 times the limit)
|
Apr 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 171 µg/L, federal limit 80 µg/L (2.1 times the limit)
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 167 µg/L, federal limit 80 µg/L (2.1 times the limit)
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 155 µg/L, federal limit 80 µg/L (1.9 times the limit)
|
Jul 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1993 | Archived |
Enforcement actions
Louisiana regulators and EPA took 5 formal enforcement actions against Prairie Road Water District between 2002 and 2025. The most recent was a compliance order (no penalty) in October 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 3, 2025 | Louisiana | Compliance order (no penalty) | 8 violations (8 health-based): Total Trihalomethanes (TTHMs) |
| May 3, 2022 | Louisiana | Compliance order (no penalty) | 4 violations (3 health-based): Groundwater Rule, Public Notice |
| Jan 8, 2007 | Louisiana | Compliance order (no penalty) | 21 violations (19 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Apr 20, 2006 | Louisiana | Compliance order (no penalty) | 18 violations (16 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Nov 12, 2002 | EPA | Compliance order (no penalty) | 2 violations: Consumer Confidence Rule |
What the violations mean
Groundwater Rule
15 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Total Trihalomethanes (TTHMs)
9 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Prairie Road Water District draws water from 3 wells.
Annual water quality report
Prairie Road Water District 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 Louisiana.
Certified drinking water labs by state EPA guidance for private wells