Tapcensus

Asher Util Dev Auth

Community water system in Pottawatomie County, Oklahoma, serving 375 people from surface water purchased. 4 rules violated in the past three years, 1 still unresolved. Owned by local government.

People served 375 surface water purchased
Rules violated, past 3 years 4 one rule can carry several violations
Unresolved 1 rules still in violation, EPA data updated Oct 7, 2026
Quarters with violations 12 of the last 12 quarters

Quarterly compliance history

VQ3
2023
VQ4
2023
VQ1
2024
VQ2
2024
VQ3
2024
VQ4
2024
VQ1
2025
VQ2
2025
VQ3
2025
VQ4
2025
VQ1
2026
VQ2
2026
UQ3
2026
–No violation identified VViolation identified SSerious violator (EPA enforcement priority) UUndetermined Oldest quarter on the left. Quarters 1 to 12 are the twelve most recent official quarters at EPA's last data refresh; the 13th is the quarter in progress at that refresh, which EPA reports as undetermined.

Still in violation

EPA data updated Oct 7, 2026

Stage 2 Disinfectants and Disinfection Byproducts Rule

Maximum Contaminant Level ViolationMonitoring and Reporting Health-based

31 violations, Jul 2023 to open · 2 contaminants · 24 measured values
EPA rule code 220 · 31 violations recorded, 1 still open, 24 health-based

Monitoring and Reporting: 7 violations, 1 still open, Jun 2025 to open. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Maximum Contaminant Level Violation, health-based: 24 violations, Jul 2023 to Jun 2026. A sample exceeded the maximum contaminant level EPA allows in drinking water.

Measured
TTHM (Total Trihalomethanes) 0.14 MG/L

Limit 0.08 MG/L · Apr to Jun 2026

Total Haloacetic Acids (HAA5) 0.08 MG/L

Limit 0.06 MG/L · Apr to Jun 2026

TTHM (Total Trihalomethanes) 0.159 MG/L

Limit 0.08 MG/L · Jan to Mar 2026

Total Haloacetic Acids (HAA5) 0.133 MG/L

Limit 0.06 MG/L · Jan to Mar 2026

TTHM (Total Trihalomethanes) 0.179 MG/L

Limit 0.08 MG/L · Oct to Dec 2025

Total Haloacetic Acids (HAA5) 0.173 MG/L

Limit 0.06 MG/L · Oct to Dec 2025

18 more in EPA's record

Contaminants on the record: Total Haloacetic Acids (HAA5), TTHM (Total Trihalomethanes).

Total Haloacetic Acids (HAA5), health effects: Dichloroacetic acid is a probable human carcinogen (Group B2). Long-term exposure to trichloroacetic acid may also increase cancer risk. Animal studies show liver, kidney, and reproductive effects at high doses. Limit: 0.060 mg/L (60 ppb) locational running annual average (LRAA)

TTHM (Total Trihalomethanes), health effects: Long-term exposure is associated with increased bladder cancer risk. Some studies link high TTHM exposure to adverse reproductive outcomes. Bromodichloromethane is classified as a possible human carcinogen. Limit: 0.080 mg/L (80 ppb) locational running annual average (LRAA)

Also 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 Dec 2025
EPA rule code 111 · 1 violation recorded

Monitoring Violation: 1 violation, Aug 2025 to Dec 2025. 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)
EPA rule code 210 · 1 violation recorded

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).

Lead and Copper Rule Revisions

Reporting ViolationTreatment Technique Violation Health-based

2 violations, Oct 2024 to Jul 2025
EPA rule code 351 · 2 violations recorded, 1 health-based

Treatment Technique Violation, health-based: 1 violation, Oct 2024 to Jul 2025. The system did not carry out a required treatment process or corrective action.

Reporting Violation: 1 violation, Oct 2024 to Jul 2025. The system did not report required information on time.

What the rule requires: The 2021 LCRR updated the 1991 LCR with mandatory lead service line inventories and replacement planning, a new 'trigger level' at 10 ppb requiring optimization, and strengthened public education. The 2024 Lead and Copper Rule Improvements (LCRI) further requires replacing all lead service lines within 10 years.

Health effects: Same as Lead and Copper Rule (5000). Violations typically reflect failure to complete the required lead service line inventory or submit a required replacement plan. Lead service lines are the primary source of lead at the tap in many older systems. Limit: Lead action level: 15 ppb (trigger level: 10 ppb); copper action level: 1.3 mg/L

About this rule

Lead and copper at the tap

The 90th percentile of the tap samples the system collected in its latest monitoring period, against EPA's action level. Levels vary between homes.

Lead 0.00061 mg/L

Action level 0.015 mg/L · Jan to Dec 2025

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.

Lead and copper are the newest 90th-percentile results in EPA's SDWA data download (LCR_SAMPLES, codes PB90 and CU90), retrieved on Oct 12, 2026: for each monitoring period a system reports the 90th-percentile value of its tap samples, which EPA compares with its action level of 0.015 mg/L for lead and 1.3 mg/L for copper (40 CFR 141.80). A result is not a measurement of any one tap.

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.