Public water system record
South Desoto Water System
Serves an area of De Soto Parish, LA · 963 people served
Federal records show 39 health-based violations and 23 monitoring/reporting issues for South Desoto Water System in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.
System profile
Source water
Groundwater
ZIP
71052
EPA system ID
LA1031029
- Health-based violations, last 10 years
- 39
- Resolved
- 3
- Unresolved
- 0
- Archived by EPA
- 36
- Any acute record
- No
- Monitoring issues, last 10 years
- 23
Key facts
- South Desoto Water System draws water from 2 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.232 mg/L, federal limit 0.08 mg/L (2.9 times the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by Louisiana, April 2018.
- Record on file since 1999, with 15 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 409 service lines.
Check whether South Desoto 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.126 mg/L, federal limit 0.08 mg/L (1.6 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 0.133 mg/L, federal limit 0.08 mg/L (1.7 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 0.143 mg/L, federal limit 0.08 mg/L (1.8 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 |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.148 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Jan 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 0.154 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Oct 1, 2024 |
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 0.149 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Jul 1, 2024 |
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 0.162 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
220 | Apr 1, 2024 |
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 0.167 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Jan 1, 2024 |
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 0.161 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
220 | Oct 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 0.182 mg/L, federal limit 0.08 mg/L (2.3 times the limit)
|
220 | Jul 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 0.193 mg/L, federal limit 0.08 mg/L (2.4 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 0.202 mg/L, federal limit 0.08 mg/L (2.5 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 0.221 mg/L, federal limit 0.08 mg/L (2.8 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 0.232 mg/L, federal limit 0.08 mg/L (2.9 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 0.19 mg/L, federal limit 0.08 mg/L (2.4 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 |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Jan 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 0.125 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Oct 1, 2021 |
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 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2021 |
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 0.126 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Apr 1, 2021 |
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 0.144 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
|
220 | Jan 1, 2021 |
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 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Oct 1, 2020 |
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 0.17 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Jul 1, 2020 |
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 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Apr 1, 2020 |
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 0.166 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Jan 1, 2020 |
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 0.174 mg/L, federal limit 0.08 mg/L (2.2 times the limit)
|
220 | Oct 1, 2019 |
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 0.169 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
220 | Jul 1, 2019 |
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 0.163 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
220 | Apr 1, 2019 |
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 0.159 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
220 | Jan 1, 2019 |
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 | Oct 2, 2018 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Oct 2, 2018 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Oct 2, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.149 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Oct 1, 2018 |
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 150 µg/L, federal limit 80 µg/L (1.9 times the limit)
|
220 | Jul 1, 2018 |
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 147 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Apr 1, 2018 |
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 144 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Jan 1, 2018 |
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 146 µg/L, federal limit 80 µg/L (1.8 times the limit)
|
220 | Oct 1, 2017 |
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 153 µg/L, federal limit 80 µg/L (1.9 times the limit)
|
220 | Jul 1, 2017 |
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 124 µg/L, federal limit 80 µg/L (1.6 times the limit)
|
220 | Apr 1, 2017 |
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 107 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
220 | Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
May 23, 2024 | Resolved |
|
Public Notice
OTHER
|
Feb 24, 2024 | Resolved |
|
Public Notice
OTHER
|
Oct 31, 2023 | Resolved |
|
Public Notice
OTHER
|
Sep 2, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
May 1, 2023 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Apr 25, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 24, 2021 | Resolved |
|
Public Notice
OTHER
|
Aug 21, 2019 | Resolved |
|
Public Notice
OTHER
|
May 23, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 2, 2019 | Resolved |
|
Public Notice
OTHER
|
Feb 9, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 31, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 31, 2017 | Resolved |
|
Public Notice
OTHER
|
May 25, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
Public Notice
OTHER
|
Nov 14, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 21, 2016 | Resolved |
|
Public Notice
OTHER
|
Feb 29, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 31, 2014 | Resolved |
|
Public Notice
OTHER
|
Apr 28, 2012 | Resolved |
Full record since 1999
EPA's records for South Desoto Water System go back to 1999. Before October 19, 2016 they list 15 health-based violations (1 resolved, 14 archived by EPA without a recorded fix) and 44 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 12 | 13 |
| 2010 to October 18, 2016 | 3 | 30 |
| October 19, 2016 to 2019 | 15 | 9 |
| 2020s | 24 | 8 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2015, Resolved.
Show all 15 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 92 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Apr 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 87 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
Oct 1, 2011 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Jul 1, 2011 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 102 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
Jan 1, 2009 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
|
Oct 1, 2008 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Jul 1, 2008 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
|
Apr 1, 2007 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 96 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Jan 1, 2007 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 113 µg/L, federal limit 80 µg/L (1.4 times the limit)
|
Oct 1, 2006 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 118 µg/L, federal limit 80 µg/L (1.5 times the limit)
|
Jul 1, 2006 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
|
Apr 1, 2006 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 95 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
Jan 1, 2006 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 84 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
Oct 1, 2005 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 104 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
Apr 1, 2005 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
|
Jan 1, 2005 | Archived |
Enforcement actions
Louisiana regulators took 2 formal enforcement actions against South Desoto Water System between 2006 and 2018. The most recent was a compliance order (no penalty) in April 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 24, 2018 | Louisiana | Compliance order (no penalty) | 58 violations (37 health-based): Total Trihalomethanes (TTHMs), Lead and Copper Rule, Public Notice |
| Mar 13, 2006 | Louisiana | Compliance order (no penalty) | 36 violations (14 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
What the violations mean
Total Trihalomethanes (TTHMs)
36 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Groundwater Rule
3 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.
Where the water comes from
South Desoto Water System draws water from 2 wells.
Annual water quality report
South Desoto 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