Public water system record
Ralston
Serves an area of Pawnee County, OK that includes Ralston · 335 people served
Federal records show no health-based violations and 47 monitoring/reporting issues for Ralston in the last ten years.
System profile
Source water
Groundwater
ZIP
74650
EPA system ID
OK2005901
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 47
Key facts
- Ralston draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, May 2021.
- Record on file since 1991, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 139 unknown out of 141 service lines.
Check whether Ralston 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlordane
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Pentachlorophenol
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Benzo(a)pyrene
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
2,4,5-TP
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
2,4-D
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Heptachlor epoxide
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Heptachlor
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
LASSO
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Atrazine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Carbofuran
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Dinoseb
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Picloram
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Simazine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
OXAMYL
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Glyphosate
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Endothall
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Diquat
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Dalapon
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Toxaphene
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Methoxychlor
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
BHC-GAMMA
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Endrin
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Mar 7, 2021 | Resolved |
|
Public Notice
OTHER
|
Mar 7, 2021 | Resolved |
|
Public Notice
OTHER
|
Jan 16, 2021 | Resolved |
|
Public Notice
OTHER
|
Jan 16, 2021 | Resolved |
|
Public Notice
OTHER
|
Nov 21, 2020 | Resolved |
|
Public Notice
OTHER
|
Sep 26, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
Full record since 1991
EPA's records for Ralston go back to 1991. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 38 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 5 | 7 |
| 2000s | 1 | 11 |
| 2010 to October 18, 2016 | 2 | 20 |
| October 19, 2016 to 2019 | 0 | 10 |
| 2020s | 0 | 37 |
Most recent health-based violation before October 19, 2016: Total Coliform, began April 2015, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Apr 1, 1991 | Resolved |
Enforcement actions
Oklahoma regulators took 7 formal enforcement actions against Ralston and issued 1 boil water order between 1991 and 2021. The most recent was a compliance order (no penalty) in May 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 20, 2021 | Oklahoma | Compliance order (no penalty) | 8 violations: E. coli, Public Notice, Lead and Copper Rule |
| Apr 12, 2013 | Oklahoma | Compliance order with a penalty | 2 violations: Lead and Copper Rule |
| Apr 7, 2006 | Oklahoma | Compliance order with a penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Sep 7, 2005 | Oklahoma | Compliance order with a penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| May 16, 2005 | Oklahoma | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Sep 15, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jun 21, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Apr 12, 1991 | Oklahoma | Boil water order | 1 violation |
Where the water comes from
Ralston draws water from 2 wells. 1 other community water system buys water from Ralston.
Community systems that buy water from it
- Pawnee County RWD #5 Pawnee, OK
Annual water quality report
Ralston 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Ralston for a copy.
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