Tapcensus

Oklahoma

Washington County drinking water quality

11 active public water systems serve 45,692 people in Washington County. 0 are compliant, 11 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 4 carry a health flag.

Active systems 11 11 community systems
People served 46K by public water systems
Systems with violations 11 100% of active systems, past 3 years
Serious violators 1 4 systems carry a health flag

Needs attention

Copan Pwa OK1021417 · Community water system · Serves 733 12 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Interim Enhanced Surface Water Treatment Rule, Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), Public Notification Rule, TTHM (Total Trihalomethanes), and Total Haloacetic Acids (HAA5).
Washington CO Rwd #2 OK3007403 · Community water system · Serves 2,250 1 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
LE Ann Water OK3007407 · Community water system · Serves 750 5 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR), TTHM (Total Trihalomethanes), and Total Haloacetic Acids (HAA5).
Ramona Public Works Authority OK3007408 · Community water system · Serves 564 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR), TTHM (Total Trihalomethanes), and Total Haloacetic Acids (HAA5).
Washington CO Rwd #7 OK3007415 · Community water system · Serves 258 6 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR) and Lead and Copper Rule Revisions (LCRR).

Community water systems

11 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Bartlesville
 34,748 1 0
Dewey Public Works Authority
 3,490 2 0
Washington CO Rwd #2
 2,250 1 1
Washington CO Rwd #1
 1,375 2 0
Washington CO Rwd #5
 900 2 0
LE Ann Water
 750 5 2
Copan Pwa
 733 12 3
Ramona Public Works Authority
 564 4 2
Ochelata Utility Authority
 494 6 1
Washington CO Rwd #7
 258 6 2
Bar-Dew Water Assoc INC
 130 3 0
Inactive systems (11, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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.