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Counties → California

Tehama County, California

SDWIS compliance plate

Sheet CA103 · Tehama County 111 sys · 1,111 viol · #929/3254

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

  • VIOL-SEVERE 87.4% flagged
  • HEALTH-MID 29.3% health
  • RANK-UPPER #929/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 92%
  • SYS-MID 111 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Tehama County ranks #929 of 3,254 counties by people served, and #45 of 58 counties in California. See methodology · corpus placement.

Tehama County standing, lower-flagged corpus third

Flagged-system rate 87.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 29.3% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #929 of 3,254 · #45 of 58 in California.

Flagged-rate neighbourhood around Tehama County

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

0% 20% 40% 60% 80% 100% Alpine · lowest Tehama · this county San Francisco · near Sutter · highest 70% 86.7% 87.4% 87.4% 87.5% 88% 97.1%

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

Water Systems

System Name Population Violations PFAS
City of Red Bluff 14,710 20 Detected
City of Corning 8,244 31 Clean
Rio Alto Water District 3,329 8 -
Caltrans-Red Bluff Rest-Nb 2,600 4 -
Caltrans-Red Bluff Rest-Sb 2,500 5 -
Los Molinos Comm. Services Dist. 1,450 121 -
Gerber las Flores Csd 1,200 6 -
Evergreen Union School District 1,100 4 -
R-Wild Horse Ranch 1,055 5 -
Wal*mart Dist. Ctr/Eco Res 1,023 2 -
Black Butte Lake, Buckhorn Ra, Uscoe 700 6 -
Mineral County Water District 634 22 -
Gerber Union Elementary School District 625 8 -
Lassen Vnp - Manzanita Lake 606 0 -
Rio Vista Mobile Home Park 543 14 -
City of Tehama 483 21 -
Vista Grande Water System 468 15 -
Sierra Pacific Industries - Red Bluff MI 450 1 -
Sky View County Water 412 15 -
Lassen View Union Elementary School Dist 350 7 -
Sierra Pacific Industries - Richfield 350 1 -
Sierra Pacific Industries - Windows 350 0 -
Berrendos School 325 11 -
River Ranch Mobile Home Park 305 16 -
Black Butte Lake, Headquarters, Uscoe 300 5 -
Richfield Elementary School 280 1 -
Lassen Vnp - Summit Lake 251 2 -
Black Butte Lake, Buckhorn Group, Uscoe 250 3 -
Dollar General Proberta 250 0 -
Lassen Vnp - Butte Lake 240 0 -
Paskenta Comm. Services Dist. 237 85 -
E Headstart 220 7 -
Lake California POA R.V. Park 200 4 -
Reeds Creek School 196 3 -
Las Flores Water Works 191 25 -
Antelope Creek MHP 175 5 -
Crain Walnut Shelling, Inc. 167 2 -
Surrey Village Water Co. Inc. 163 8 -
Woodson Bridge MHP 158 17 -
Reynolds Consumer Products (Red Bluff) 150 6 -
Lassen Vnp - Lost Creek 150 0 -
Mira Monte Water Co. 145 20 -
Lassen Vnp - Southwest/Chalet 145 0 -
Maywood Mobile Home Park 140 19 -
Cal Fire - Ishi Conservation Camp 135 8 -
Mountain Valley Apts & Rvp 131 10 -
Cal Fire - Salt Creek Conservation Camp 130 6 -
Del Oro WC - Larkspur Meadows 116 11 -
Corning RV Park 112 2 -
Kirkwood Elementary School 111 5 -

Compare beyond California

Lower-flagged peers for Tehama County

Cross-state counties nearest Tehama County on flagged-system share (87.4%) and cumulative violation count (1,111). 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.