STERLING PWA

The Honorable Dale Winkler, Mayor PO BOX 277, STERLING, OK, 73567 · 580-365-4445

Legal business name: STERLING PWA

On the EPA record

Population served: 762
Service connections: 305
System type: Community water system
Primary water source: Ground water
Owner type: Local government

Drinking-water violations on record (35)

EPA's SDWIS records each violation as codes, not sentences. Each one below is shown with EPA's own published description of that violation type and contaminant. Health-based violations — a contaminant limit or treatment requirement not met — are marked apart from monitoring and reporting failures.

2024-10-17 — Treatment Technique Violation

category TT · health-based

LSL Inventory — LEAD AND COPPER RULE REVISIONS

Recorded as corrected on 2025-07-15.

2024-10-17 — Reporting Violation

category RPT · monitoring & reporting

LSL Reporting — LEAD AND COPPER RULE REVISIONS

Recorded as corrected on 2025-07-15.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Barium

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Fluoride

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Nickel

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Beryllium, Total

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Thallium, Total

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Gross Alpha, Excl. Radon and U

Recorded as corrected on 2025-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Combined Uranium

Recorded as corrected on 2025-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Chromium

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Selenium

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Mercury

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Combined Radium (-226 and -228)

Recorded as corrected on 2025-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Gross Beta Particle Activity

Recorded as corrected on 2025-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Antimony, Total

Recorded as corrected on 2022-12-31.

2020-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Cadmium

Recorded as corrected on 2022-12-31.

2016-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Nitrate-Nitrite

Recorded as corrected on 2016-12-31.

2014-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring and Reporting (DBP) — TTHM

Recorded as corrected on 2014-08-31.

2014-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring and Reporting (DBP) — Total Haloacetic Acids (HAA5)

Recorded as corrected on 2014-08-31.

2011-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Picloram

Recorded as corrected on 2013-12-31.

2007-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Routine Minor (TCR) — Coliform (TCR)

Recorded as corrected on 2007-01-31.

2006-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Routine Minor (TCR) — Coliform (TCR)

Recorded as corrected on 2006-01-31.

2005-12-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Routine Minor (TCR) — Coliform (TCR)

Recorded as corrected on 2005-12-31.

2004-01-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Routine Minor (TCR) — Coliform (TCR)

Recorded as corrected on 2004-01-31.

1997-02-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1997-02-28.

1997-01-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1997-01-31.

1996-11-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1996-11-30.

1996-02-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1996-02-29.

1996-01-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1996-01-31.

1995-02-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1995-02-28.

1995-01-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1995-01-31.

1993-06-01 — Monitoring and Reporting

category MR · monitoring & reporting

Initial Tap Sampling for Pb and Cu — Lead and Copper Rule

Recorded as corrected on 1994-06-14.

1993-05-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Routine Major (TCR) — Coliform (TCR)

Recorded as corrected on 1993-05-31.

1992-01-01 — Maximum Contaminant Level Violation

category MCL · health-based

Maximum Contaminant Level Violation, Monthly (TCR) — Coliform (TCR)

Recorded as corrected on 1992-01-31.

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monitoring & reporting

Safe Drinking Water Act violation (EPA violation type code ?)

Source: US Environmental Protection Agency (EPA) · EPA public water system ID (PWSID) OK2001601