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Oregon Revised Statutes

Or. Rev. Stat. § 454.275 (2026)

Definitions for ORS 454.275 to 454.380

✓ current as of May 2026
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      454.275 Definitions for ORS 454.275 to 454.380. As used in ORS 454.275 to 454.380:

      (1) “Affected area” means an area subject to an order of the commission issued under ORS 454.305.

      (2) “Commission” means the Environmental Quality Commission.

      (3) “Governing body” means a board of commissioners, county court or other managing board of a municipality.

      (4) “Municipality” means a city, county, county service district, sanitary district, metropolitan service district or other special district authorized to treat or dispose of sewage in any county with a population exceeding 400,000 according to the latest federal decennial census.

      (5) “Subsurface sewage disposal system” has the meaning given that term in ORS 454.605.

      (6) “Threat to drinking water” means the existence in any area of any three of the following conditions:

      (a) More than 50 percent of the affected area consists of rapidly draining soils;

      (b) The ground water underlying the affected area is used or can be used for drinking water;

      (c) More than 50 percent of the sewage in the affected area is discharged into cesspools, septic tanks or seepage pits and the sewage contains biological, chemical, physical or radiological agents that can make water unfit for human consumption; or

      (d) Analysis of samples of ground water from wells producing water that may be used for human consumption in the affected area contains levels of one or more biological, chemical, physical or radiological contaminants which, if allowed to increase at historical rates, would produce a risk to human health as determined by the local health officer. Such contaminant levels must be in excess of 50 percent of the maximum allowable limits set in accordance with the Federal Safe Drinking Water Act.

      (7) “Treatment works” has the meaning given that term in ORS 454.010. [1981 c.358 §1; 1983 c.235 §7; 1987 c.627 §8]

Notes of Decisions
Cited in 2 cases, 1990–1998 · leading case: United Citizens v. Oregon Env't Quality Comm'n, 799 P.2d 665 (Or. Ct. App. 1990).
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United Citizens v. Oregon Env't Quality Comm'n, 799 P.2d 665 (Or. Ct. App. 1990). · cites it 9× “Phegley and Helen Osburn seek review of a circuit court decision affirming an order of the Environmental Quality Commission (EQC) under the Threat To Drinking Water Act, ORS 454.275 et seq (the Act), requiring that the cities of Portland and Gresham provide sewer service to…”
City of Medford v. Bear Creek Valley Sanitary Auth., 963 P.2d 120 (Or. Ct. App. 1998). “ORS 454.275(4). Those statutes do apply to the City of Medford.”
— Or. Rev. Stat. § 454.275(4) — 1 case
City of Medford v. Bear Creek Valley Sanitary Auth., 963 P.2d 120 (Or. Ct. App. 1998). “ORS 454.275(4). Those statutes do apply to the City of Medford.”
— Or. Rev. Stat. § 454.275(5) — 1 case
United Citizens v. Oregon Env't Quality Comm'n, 799 P.2d 665 (Or. Ct. App. 1990). “Phegley and Helen Osburn seek review of a circuit court decision affirming an order of the Environmental Quality Commission (EQC) under the Threat To Drinking Water Act, ORS 454.275 et seq (the Act), requiring that the cities of Portland and Gresham provide sewer service to…”
— Or. Rev. Stat. § 454.275(6) — 1 case
United Citizens v. Oregon Env't Quality Comm'n, 799 P.2d 665 (Or. Ct. App. 1990). “Phegley and Helen Osburn seek review of a circuit court decision affirming an order of the Environmental Quality Commission (EQC) under the Threat To Drinking Water Act, ORS 454.275 et seq (the Act), requiring that the cities of Portland and Gresham provide sewer service to…”
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