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Counties → Oregon

County profile · EPA SDWIS + UCMR5

Jefferson County, Oregon

31 SDWIS-listed public water systems serve 26,851 people in Jefferson County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

31
SDWIS water systems Middle third of counties
1,468
Total violations Middle third of counties
100.0%
SDWIS systems w/ a violation Middle third of counties
0.0%
UCMR5 PFAS rate (3 tested) Lower third of counties with tests

SDWIS compliance plate

Sheet OR031 · Jefferson County 31 sys · 1,468 viol · #1482/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 10.9% health
  • RANK-MID #1482/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 94%
  • SYS-SMALL 31 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Multnomah County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Jefferson County ranks #1,482 of 3,254 counties by people served, and #22 of 36 counties in Oregon. See methodology · corpus placement.

Jefferson County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 10.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,482 of 3,254 · #22 of 36 in Oregon.

Flagged-rate neighbourhood around Jefferson County

Lowest/highest poles plus in-state counties nearest Jefferson County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Polk · lowest Wheeler · highest Benton · near Coos · near 86.2% 100% 100% 100% 100% 100% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Deschutes Valley Water Dist 11,700 59 Clean
Crooked River Ranch Wtr Co 4,000 105 Clean
Madras, City Of 3,940 123 Clean
Oprd Peter Ogden State Wayside 2,000 114 -
Oprd Cove Palisades - Deschutes River 950 30 -
Oprd Cove Palisades - Crooked River 600 24 -
Usfs Allingham Campground 375 14 -
Usfs Suttle Lake Cg 350 9 -
Lake Simtustus RV Park 350 15 -
Metolius Meadows Prop Owners 285 73 -
Pge See Water System 250 11 -
Pge Pelton Park 250 4 -
Rainbow Market 250 204 -
Odfw Wizard Falls 178 15 -
Usfs Lower Bridge Campground 150 20 -
Camp Tamarack 140 242 -
Usfs Perry South Cg Hp #1 135 9 -
Usfs Perry South Cg Hp #4 128 14 -
Round Lake Christian Camp 110 54 -
Suttle Lodge and Boathouse 100 38 -
Hoodoos Camp Sherman Resort 75 19 -
Lake Creek Lodge 75 10 -
Usfs Riverside Cg Hp 75 6 -
Usfs Sheep Springs Cg Hp 75 8 -
Suttle Lake United Method Camp 75 27 -
Cold Springs Resort 65 12 -
Camp Caldera 45 15 -
Madsen Spring Wtr Assoc 40 16 -
Black Butte Elementary SD 41 30 28 -
Olallie Lake Resort 30 132 -
Deschutes Trailer Park 25 18 -

Compare beyond Oregon

Mid-flagged peers for Jefferson County

Cross-state counties nearest Jefferson County on flagged-system share (100.0%) and cumulative violation count (1,468). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.