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Counties → Oregon

Klamath County, Oregon

SDWIS compliance plate

Sheet OR035 · Klamath County 108 sys · 8,722 viol · #852/3254

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

  • VIOL-SEVERE 98.1% flagged
  • HEALTH-LOW 3.8% health
  • RANK-UPPER #852/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-HIGH 100.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 108 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Josephine County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Klamath County ranks #852 of 3,254 counties by people served, and #15 of 36 counties in Oregon. See methodology · corpus placement.

Klamath County standing, mid-flagged corpus third

Flagged-system rate 98.1% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.8% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #852 of 3,254 · #15 of 36 in Oregon.

Flagged-rate neighbourhood around Klamath County

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

0% 20% 40% 60% 80% 100% Polk · lowest Klamath · this county Umatilla · near Wheeler · highest 86.2% 98% 98.1% 98.6% 98.7% 98.8% 100%

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

Water Systems

System Name Population Violations PFAS
Klamath Falls Water Dept 40,475 173 Detected
Odot Hd Midland Info Ctr Ra 1,000 24 -
Merrill Water Department 907 42 -
Crescent Wtr Supply & Impr Dist 900 22 -
Malin Municipal Water 815 171 -
Oregon Water Utilities - Mountain Lakes 770 69 -
Otic Hd Beaver Marsh Ra-North 750 29 -
Otic Beaver Marsh Ra-South 750 32 -
Chiloquin Municipal Water Dept 730 84 -
Falcon Heights 559 97 -
Pilot Travel Center-Chemult 500 3 -
Gilchrist Water System LLC 440 42 -
Bonanza High/Elem Schools 425 37 -
Oregon Shores Beach Club Inc 352 300 -
Usfs Lake of the Woods 350 8 -
Usfs Spring Campground 340 5 -
Oprd Collier State Park 325 16 -
Lost River High School 320 157 -
Bly Water District 310 177 -
Keno Water Co Inc 290 260 -
Columbia Plywood Corp 280 103 -
Oregon Shores Recreation Club 275 31 -
Swiss Krono OR LLC 260 4 -
Round Lake Water Utilities 250 184 -
Skyline View Dist Improvement 250 116 -
Oregon Water Utilities - Southview 250 52 -
Fast Break Bonanza Market 250 63 -
Cascade Wtr Improvement Dist 230 22 -
Nps Annie Springs 200 135 -
Crescent Lake Lodge Resort 200 31 -
Pine Grove Water Dist (Klamath) 180 179 -
Usfs Trapper Creek Campground 160 2 -
Crossroads Mobile Home Park 150 334 -
Usfs Crescent Lake Cg 150 13 -
Cinders Cafe & Bar 150 85 -
Odell Sportsmen Center 150 19 -
Usfs Digit Point Cg 140 32 -
Usfs Sunset Cove Campground 115 4 -
Wisemans Mobile Court 114 154 -
Lakeside Mobile Home & RV Park 110 685 -
Bonanza Business Center 110 191 -
Camp Esther Applegate Lds 100 48 -
Rocky Point Marina 100 70 -
Diamond Lake Junction Cafe 100 68 -
Gerber Water System 100 34 -
Chemult Motel, The 100 37 -
Odell Lake Resort 100 19 -
Usfs Whitefish Horsecamp 95 6 -
Ridgewater Water System 80 5 -
Willamette Pass Resort 80 29 -

Compare beyond Oregon

Mid-flagged peers for Klamath County

Cross-state counties nearest Klamath County on flagged-system share (98.1%) and cumulative violation count (8,722). 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. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.