Transient Non-Community · PWSID PA5306607

Stallion Oilfield Services

Serves 25 peopleSurface Water PurchasedOwner: PrivateHouston, Texas

Nothing open right now.

On record since 2019: 473 violations. 3 treatment lapses · 290 missed or late tests · 180 notices or reports. Most recent began 2025-09-01.

None of them is a measurement of contaminated water.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

0Over the limit

3Treatment lapse

290Missed or late test

180Notice or report

More violations on record than 99% of active water systems in Texas. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

One square ≈ 20 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

<1% treatment lapse · 361% missed or late test · 29038% notice or report · 180

Across Texas, 60% of violations are missed or late tests and 10% are water over a limit.

Every violation on record

2025-09-01Revised Total Coliform Rule ×2MONBack in compliance
2025-08-01Revised Total Coliform Rule ×2MONBack in compliance
2025-07-01Revised Total Coliform Rule ×15MONPeriod ended · no return to compliance on file
2025-06-01Revised Total Coliform Rule ×2MONPeriod ended · no return to compliance on file
2025-05-01Revised Total Coliform Rule ×2MONPeriod ended · no return to compliance on file
2024-06-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
2024-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
2023-11-19Public NoticePN Violation for NPDWR ViolationBack in compliance
2023-10-09Revised Total Coliform RuleRPTBack in compliance
2023-10-09Revised Total Coliform RuleTTBack in compliance
2023-06-01Revised Total Coliform Rule ×9MONBack in compliance
2022-08-01Revised Total Coliform RuleMONBack in compliance
2022-07-01Revised Total Coliform RuleMONBack in compliance
2021-07-11Public Notice ×26PN Violation for NPDWR ViolationBack in compliance
2021-06-11Public Notice ×28PN Violation for NPDWR ViolationBack in compliance
2021-06-01Revised Total Coliform RuleRPTBack in compliance
2021-05-11Public Notice ×17PN Violation for NPDWR ViolationBack in compliance
2021-05-01Revised Total Coliform Rule ×2RPTBack in compliance
2021-04-11Public Notice ×16PN Violation for NPDWR ViolationBack in compliance
2021-04-01Revised Total Coliform RuleMONBack in compliance
2021-03-11Public Notice ×17PN Violation for NPDWR ViolationBack in compliance
2021-03-01Revised Total Coliform Rule ×4MONBack in compliance
2021-03-01Revised Total Coliform RuleRPTBack in compliance
2021-02-11Public Notice ×17PN Violation for NPDWR ViolationBack in compliance
2021-01-11Public Notice ×15PN Violation for NPDWR ViolationBack in compliance

Show the other 22 entries

2020-12-11Public Notice ×17PN Violation for NPDWR ViolationBack in compliance
2020-11-11Public Notice ×17PN Violation for NPDWR ViolationBack in compliance
2020-11-01Revised Total Coliform Rule ×2MONBack in compliance
2020-10-01Revised Total Coliform RuleMONBack in compliance
2020-09-01Revised Total Coliform Rule ×19MONBack in compliance
2020-08-30Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-08-29Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-08-01Revised Total Coliform Rule ×32MONBack in compliance
2020-07-20Revised Total Coliform RuleRPTBack in compliance
2020-07-20Revised Total Coliform RuleTTBack in compliance
2020-07-19Revised Total Coliform RuleRPTBack in compliance
2020-07-19Revised Total Coliform RuleTTBack in compliance
2020-07-01Revised Total Coliform Rule ×25MONBack in compliance
2020-06-01Revised Total Coliform Rule ×26MONBack in compliance
2020-05-01Revised Total Coliform Rule ×28MONBack in compliance
2020-04-01Revised Total Coliform Rule ×17MONBack in compliance
2020-03-01Revised Total Coliform Rule ×16MONBack in compliance
2020-02-01Revised Total Coliform Rule ×17MONBack in compliance
2020-01-01Revised Total Coliform Rule ×17MONBack in compliance
2019-12-01Revised Total Coliform Rule ×15MONBack in compliance
2019-11-01Revised Total Coliform Rule ×17MONBack in compliance
2019-10-01Revised Total Coliform Rule ×17MONBack in compliance

System details

Population served	25
Service connections	0
Water source	Surface Water Purchased
System type	Transient Non-Community
Owner	Private
Status	Active
City	Houston
EPA ZIP on file	77024

Areas served

Washington County

Reading this record

Stallion Oilfield Services is a transient non-community that draws from surface water purchased and serves about 25 people in Houston, Texas. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.