Public water system record
Ada
Serves an area of Pontotoc County, OK that includes Ada, Byng, Latta and 1 more place · 22,600 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Ada in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Ada draws water from 4 wells (3 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, July 2008.
- Record on file since 1993, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 10,491 unknown out of 11,575 service lines.
Check whether Ada 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 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
Full record since 1993
EPA's records for Ada go back to 1993. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 4 |
| 2000s | 1 | 3 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began January 2002, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
Enforcement actions
Oklahoma regulators took 1 formal enforcement action against Ada in 2008. The most recent was a compliance order with a penalty in July 2008.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 25, 2008 | Oklahoma | Compliance order with a penalty | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
What the violations mean
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
Ada draws water from 4 wells (3 of them for emergency, seasonal or other part-time use). 4 other community water systems buy water from Ada.
Community systems that buy water from it
- Pontotoc Co RWD # 1 (Homer) Ada, OK
- Pontotoc Co RWD # 6 (Fittstown) Fittstown, OK
- Pontotoc Co RWD # 7 Ada, OK
- Pontotoc Co RWD # 9 Stonewall, OK
Annual water quality report
Ada 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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 Oklahoma.
Certified drinking water labs by state EPA guidance for private wells