Wash. Rev. Code » Title 90 · Chapter 90.48
Revised Code of Washington

Wash. Rev. Code § 90.48.030 (2026)

Jurisdiction of department

✓ current as of May 2026
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The department shall have the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, and other surface and underground waters of the state of Washington.
[ 1987 c 109 s 123; 1945 c 216 s 10; Rem. Supp. 1945 s 10964j. FORMER PART OF SECTION: 1945 c 216 s 11; Rem. Supp. 1945 s 10964k, now codified as RCW 90.48.035.]

Notes:

Purpose—Short title—Construction—Rules—Severability—Captions—1987 c 109: See notes following RCW 43.21B.001.
Notes of Decisions
Cited in 9 cases (1 in the last 5 years), 1998–2026 · leading case: Pub. Util. DIST. v. State, Dept. of Ecology, 51 P.3d 744 (Wash. 2002).
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Pub. Util. DIST. v. State, Dept. of Ecology, 51 P.3d 744 (Wash. 2002). “030 states that "[t]he department shall have the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, and other surface and underground waters of the state of Washington." "Pollution" is defined broadly as…”
Pub. Util. Dist. No. 1 v. Dep't of Ecology, 146 Wash. 2d 778 (Wash. 2002). “We also note that RCW 90.48.030 states that “[t]he department shall have the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water *820 courses, and other surface and underground waters of the state of Washington.”
Tiegs v. Watts, 135 Wash. 2d 1 (Wash. 1998). “*30 RCW 90.48.030. RCW 90.48.037 empowers the department to bring enforcement actions, and RCW 90.”
Tiegs v. Watts, 954 P.2d 877 (Wash. 1998). “RCW 90.48.030. RCW 90.48.037 empowers the department to bring enforcement actions, and RCW 90.”
Pac. Topsoils, Inc. v. Dep't of Ecology, 157 Wash. App. 629 (Wash. Ct. App. 2010). “” RCW 90.48.030 grants the DOE “the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, and other surface and underground waters of the State of Washington.”
Pac. Topsoils v. State Dept. of Ecology, 238 P.3d 1201 (Wash. Ct. App. 2010). “" RCW 90.48.030 grants the DOE "the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, and other surface and underground waters of the State of Washington.”
Crown Resources, Corp. v. Dep't of Ecology (Wash. Ct. App. 2019). “RCW 90.48.030. Later amendments to the act make it unlawful for any person conducting a commercial or industrial operation of any type to dispose of solid or liquid waste material into the waters of the state without obtaining a state waste discharge permit.”
Waste Action Proj. v. Fruhling Sand & Topsoil, Inc. (W.D. Wash. 2020). “RCW 90.48.030 provides that Ecology shall have the jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, other surface and underground waters of the state of Washington.”
Arthur West, V. Lower Duwamish Waterway Grp. (Wash. Ct. App. 2026). “The rule requires 8 In the table of authorities to his opening brief, West cites RCW 90.48.030 of the WPCA, which grants the Department “jurisdiction to control and prevent the pollution of streams, lakes, rivers, ponds, inland waters, salt waters, water courses, and other…”
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