Public water system record
Town of Olla Water System
Serves Olla, LaSalle Parish, LA · 2,565 people served
Federal records show 9 health-based violations and 3 monitoring/reporting issues for Town of Olla Water System 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
- 9
- Resolved
- 9
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Town of Olla 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), 119 µg/L, federal limit 80 µg/L (1.5 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by Louisiana, July 2018.
- Record on file since 1992, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 855 service lines.
Check whether Town of Olla 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 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 96 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 98 µg/L, federal limit 80 µg/L (1.2 times the limit)
|
220 | Apr 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 104 µg/L, federal limit 80 µg/L (1.3 times the limit)
|
220 | Jan 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 108 µg/L, federal limit 80 µg/L (1.4 times the limit)
|
220 | Oct 1, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 119 µg/L, federal limit 80 µg/L (1.5 times the limit)
|
220 | Jul 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 31, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jul 31, 2017 | Resolved |
Full record since 1992
EPA's records for Town of Olla Water System go back to 1992. Before October 19, 2016 they list 5 health-based violations (2 resolved, 3 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 0 |
| 2000s | 1 | 1 |
| 2010 to October 18, 2016 | 2 | 2 |
| October 19, 2016 to 2019 | 7 | 3 |
| 2020s | 2 | 0 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2014, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 85 µg/L, federal limit 80 µg/L (1.1 times the limit)
|
Apr 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2003 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Archived |
Enforcement actions
Louisiana regulators took 1 formal enforcement action against Town of Olla Water System in 2018. The most recent was a compliance order (no penalty) in July 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 11, 2018 | Louisiana | Compliance order (no penalty) | 12 violations (10 health-based): Total Trihalomethanes (TTHMs), Consumer Confidence Rule |
What the violations mean
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
Town of Olla Water System draws water from 3 wells (1 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Town of Olla Water System. 1 other public water system has an emergency connection to Town of Olla Water System.
Community systems that buy water from it
- Pleasant Ridge Water System Olla, LA
Annual water quality report
Town of Olla 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