Jet
Community water system in Alfalfa County, Oklahoma, serving 230 people from ground water. 5 rules violated in the past three years, 1 still unresolved. Owned by local government.
Quarterly compliance history
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
Still in violation
EPA data updated Oct 7, 2026
Lead and Copper Rule
Monitoring and ReportingTreatment Technique Violation
Health-based
2 violations, Dec 2018 to open
Lead and Copper Rule
Monitoring and ReportingTreatment Technique Violation Health-based2 violations, Dec 2018 to open
Monitoring and Reporting: 1 violation, open since Jan 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Treatment Technique Violation, health-based: 1 violation, Dec 2018 to Aug 2023. The system did not carry out a required treatment process or corrective action.
What the rule requires: The 1991 LCR uses action levels rather than MCLs: if the 90th percentile of high-risk tap samples exceeds 15 ppb lead or 1.3 mg/L copper, the system must take escalating corrective actions. Violations typically indicate failure to maintain adequate corrosion control — the treatment that keeps lead from leaching out of pipes, solder, and fixtures.
Health effects: Lead: no safe level for children. Causes irreversible neurological damage, impaired cognitive development, behavioral problems, and reduced IQ in children under 6. In adults: hypertension, cardiovascular disease, kidney damage. Copper: acute gastrointestinal distress at high levels; liver/kidney damage at very high chronic levels. Limit: Action levels: lead 15 ppb, copper 1.3 mg/L — 90th percentile of tap samples at high-risk sites
About this ruleAlso violated in the past three years
Jul to Sep 2023 to Jul to Sep 2026
Revised Total Coliform Rule
Monitoring Violation
1 violation, Aug 2025 to Jan 2026
Revised Total Coliform Rule
Monitoring Violation1 violation, Aug 2025 to Jan 2026
Monitoring Violation: 1 violation, Aug 2025 to Jan 2026. The system did not complete required monitoring. This does not show that a contaminant was found.
What the rule requires: The 2013 RTCR (effective 2016) replaced the original TCR. It triggers automatic E. coli testing whenever total coliform is found. A single E. coli-positive sample is an acute MCL violation. It also requires systems exceeding 5% total coliform-positive samples to conduct a formal assessment and correct any deficiencies, helping prevent contamination before it escalates.
About this rule
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting
1 violation, Aug 2025 to Jan 2026 · Chlorine (MRDL)
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting1 violation, Aug 2025 to Jan 2026 · Chlorine (MRDL)
Monitoring and Reporting: 1 violation, Aug 2025 to Jan 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminant on the record: Chlorine (MRDL).
Synthetic Organic Chemicals
Monitoring and Reporting
1 violation, Jan 2023 to Dec 2025 · 2,4-D
Synthetic Organic Chemicals
Monitoring and Reporting1 violation, Jan 2023 to Dec 2025 · 2,4-D
Monitoring and Reporting: 1 violation, Jan 2023 to Dec 2025. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminant on the record: 2,4-D.
Nitrate Rule
Monitoring and Reporting
1 violation, Jan 2025 to May 2026 · Nitrate-Nitrite (Combined)
Nitrate Rule
Monitoring and Reporting1 violation, Jan 2025 to May 2026 · Nitrate-Nitrite (Combined)
Monitoring and Reporting: 1 violation, Jan 2025 to May 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Contaminant on the record: Nitrate-Nitrite (Combined).
About this data
Rules violated and the list above come from EPA's SDWIS violation records, one row per violation and contaminant, grouped by the rule each row belongs to. A violation counts when its non-compliance period ended on or after Jul 1, 2023, the start of the thirteen quarters ECHO's three-year figures cover, or is still open; it is unresolved when it was still open at EPA's data refresh on Oct 7, 2026. EPA's rule code 500, "Not Regulated", is left out, as in ECHO's counts. Each rule's violation count is EPA's, and one rule can carry several: a missed monitoring round for a group of contaminants is one violation per contaminant and period. Category names are EPA's violation categories.
ECHO's own summary count of rules violated agrees with this grouping for 98.8% of active systems nationally, and its count of rules being violated for 98.7%; where they differ, the figures here follow the rows listed.
A measured value shown with a rule is the sample result EPA recorded with that violation (SDWIS viol_measure), against the limit EPA recorded on the same row (state_mcl), both in EPA's unit as written; violations without a recorded value, such as missed monitoring, show none. Other measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
Service area from EPA's Public Water System Service Area Boundaries dataset: State agency. The system's location is the centre of the service area EPA publishes for the system.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Oklahoma records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.