Public water system record
Rayville Water System
Serves Rayville, Richland Parish, LA · 4,842 people served
Federal records show 29 health-based violations and 10 monitoring/reporting issues for Rayville Water System in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 29
- Resolved
- 18
- Unresolved
- 11
- Any acute record
- No
- Monitoring issues, last 10 years
- 10
Key facts
- Rayville Water System draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 146 µg/L, federal limit 80 µg/L (1.8 times the limit), 2018.
- Most recent formal enforcement: compliance order (no penalty) by Louisiana, March 2018.
- Record on file since 1992, with 21 health-based violations before October 19, 2016.
Check whether Rayville Water System 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Apr 27, 2022 | Active | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 31, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 31, 2019 |
Active
Enforcement action in place
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 31, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | May 31, 2019 | Active | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.125 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.131 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 142 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 68 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 144 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 64 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 138 µg/L, federal limit 80 µg/L (1.7 times the limit)
|
220 | Apr 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 146 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Jan 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 141 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Oct 1, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 139 µg/L, federal limit 80 µg/L (1.7 times the limit)
|
220 | Jul 1, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 131 µg/L, federal limit 80 µg/L (1.6 times the limit)
|
220 | Apr 1, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 122 µg/L, federal limit 80 µg/L (1.5 times the limit)
|
220 | Jan 1, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 101 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
220 | 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 |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Public Notice
OTHER
|
May 17, 2022 | Resolved |
|
Public Notice
OTHER
|
Mar 15, 2019 | Resolved |
|
Public Notice
OTHER
|
Dec 11, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 31, 2017 | Resolved |
|
Public Notice
OTHER
|
Feb 22, 2017 | Resolved |
|
Public Notice
OTHER
|
Dec 16, 2016 | Resolved |
|
Public Notice
OTHER
|
Oct 8, 2016 | Resolved |
|
Public Notice
OTHER
|
Jun 3, 2016 | Resolved |
Full record since 1992
EPA's records for Rayville Water System go back to 1992. Before October 19, 2016 they list 21 health-based violations (15 resolved, 6 archived by EPA without a recorded fix) and 18 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 0 |
| 2000s | 4 | 5 |
| 2010 to October 18, 2016 | 13 | 13 |
| October 19, 2016 to 2019 | 19 | 5 |
| 2020s | 9 | 3 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.
Show all 21 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 101 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
Oct 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 101 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
Jul 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 117 µg/L, federal limit 80 µg/L (1.5 times the limit)
|
Apr 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 133 µg/L, federal limit 80 µg/L (1.7 times the limit)
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 148 µg/L, federal limit 80 µg/L (1.9 times the limit)
|
Oct 1, 2015 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 64 µg/L, federal limit 60 µg/L (1.1 times the limit)
|
Jul 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 143 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
Jul 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 98.7 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Apr 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Jan 24, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jan 15, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 15, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 15, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 15, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Archived |
Enforcement actions
Louisiana regulators took 2 formal enforcement actions against Rayville Water System between 2016 and 2018. The most recent was a compliance order (no penalty) in March 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 29, 2018 | Louisiana | Compliance order (no penalty) | 24 violations (23 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jun 22, 2016 | Louisiana | Compliance order (no penalty) | 21 violations (15 health-based): Total Trihalomethanes (TTHMs), Public Notice, Haloacetic Acids (HAA5), Groundwater Rule |
What the violations mean
Groundwater Rule
12 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)
12 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Haloacetic Acids (HAA5)
4 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Rayville Water System draws water from 3 wells (1 of them for emergency, seasonal or other part-time use). It also has emergency connections to Archibald Water System and Start Water System. 2 other public water systems have emergency connections to Rayville Water System.
Emergency or part-time connections to
- Archibald Water System Archibald, LA
- Start Water System Start, LA
Annual water quality report
Rayville Water System 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