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Counties → California

Butte County, California

SDWIS compliance plate

Sheet CA007 · Butte County 88 sys · 1,512 viol · #293/3254

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

  • VIOL-SEVERE 89.8% flagged
  • HEALTH-LOW 11.4% health
  • RANK-TOP #293/3254
  • PHOTO-FINISH ±0.5 pp
  • PFAS-HIGH 57.1% detect
  • SRC-GW GW lead 91%
  • SYS-MID 88 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Stanislaus County (+ 0.5 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Butte County ranks #293 of 3,254 counties by people served, and #29 of 58 counties in California. See methodology · corpus placement.

Butte County standing, lower-flagged corpus third

Flagged-system rate 89.8% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.4% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 57.1% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #293 of 3,254 · #29 of 58 in California.

Flagged-rate neighbourhood around Butte County

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

0% 20% 40% 60% 80% 100% Alpine · lowest Orange · near Stanislaus · near Sutter · highest 70% 88.9% 89.1% 89.8% 90.3% 90.5% 97.1%

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

Water Systems

System Name Population Violations PFAS
Cal-Water Service Co.-Chico 114,925 17 Detected
South Feather W&p - Miners Ranch 22,664 0 Clean
Butte-Glenn Community College Dist 18,000 4 Clean
Thermalito Water & Sewer Dist 12,136 11 Detected
Cal-Water Service Co.-Oroville 11,106 4 Detected
Del Oro Water Co.-Paradise Pines 10,940 16 -
Paradise Irrigation District 9,142 21 Clean
Gray Lodge Check Station 8,000 2 -
City of Gridley 7,269 11 Detected
City of Biggs 2,060 25 -
Durham Irrigation District 1,581 11 -
Palermo Bible Family Church 1,000 4 -
Del Oro Water Co.-Lime Saddle Marina 895 2 -
Chico Grange #486 800 8 -
Casa de Alma El Cameron Pelao 750 2 -
Pleasant Valley Baptist Church 600 53 -
Dwr-Monument Hill Restrooms 593 2 -
Del Oro Water Co.-Stirling Bluffs 521 14 -
Chico Eastside Little League 500 12 -
Gridley Farm Labor Housing 460 15 -
Butte Creek Estates Mutual Water Co 399 26 -
Sierra Nevada Brewing Co. 350 2 -
Del Oro Water Co.-Magalia 340 8 -
Pleasant Grove MHP 327 45 -
Bidwell Park Golf Course 325 15 -
Lake Madrone Water District 297 37 -
Manzanita Elementary School 295 10 -
Gran Mutual Water Co 290 7 -
Golden Feather MHP 275 34 -
Almond Grove Mobile Park 253 20 -
Lundberg Family Farm 240 19 -
Nord Country School 230 15 -
Dingerville USA Park 220 13 -
Silver Dollar Fairgrounds 195 14 -
Foothills Manufactured Home Communuty 180 92 -
Fedex Ground 180 4 -
Keefer Creek Estates 160 10 -
Liberty 1st Ward Meeting House 151 2 -
Youth With a Mission-Springs of Living W 150 5 -
Paradise Adventist Church 150 6 -
G & J Properties 130 14 -
Forest Ranch Charter School 125 12 -
River Reflections RV & Campground 125 19 -
Sierra Moon Mutual Water Company 120 42 -
Forest Ranch Mutual Water System 119 32 -
Del Oro Water Company - Buzztail Dist. 106 16 -
Durham Dayton Industrial Partners-Pro PA 102 16 -
Psea Camp - Desabla 100 8 -
Down Range Indoor Training Center 100 2 -
Merry Mountain Mutual 90 33 -

Compare beyond California

Lower-flagged peers for Butte County

Cross-state counties nearest Butte County on flagged-system share (89.8%) and cumulative violation count (1,512). 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.