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Counties → California

County profile · EPA SDWIS + UCMR5

Del Norte County, California

32 SDWIS-listed public water systems serve 30,424 people in Del Norte County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

32
SDWIS water systems Middle third of counties
518
Total violations Lower third of counties
96.9%
SDWIS systems w/ a violation Middle third of counties
0.0%
UCMR5 PFAS rate (1 tested) Lower third of counties with tests

SDWIS compliance plate

Sheet CA015 · Del Norte County 32 sys · 518 viol · #1358/3254

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

  • VIOL-SEVERE 96.9% flagged
  • HEALTH-LOW 13.7% health
  • RANK-MID #1358/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 88%
  • SYS-SMALL 32 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Sutter County (+ 0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Del Norte County ranks #1,358 of 3,254 counties by people served, and #52 of 58 counties in California. See methodology · corpus placement.

Del Norte County standing, mid-flagged corpus third

Flagged-system rate 96.9% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.7% 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 #1,358 of 3,254 · #52 of 58 in California.

Flagged-rate neighbourhood around Del Norte County

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

0% 20% 40% 60% 80% 100% Alpine · lowest San Mateo · near Del Norte · this county 70% 95.9% 96.2% 96.2% 96.9% 97.1%

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

Water Systems

System Name Population Violations PFAS
City of Crescent City 17,262 3 Clean
Bertsch Ocean View Csd 2,570 1 -
Smith River C.s.d. 2,568 10 -
Jedediah Smith State Park 2,208 0 -
Del Norte Coast State Park 1,051 4 -
Gasquet C.s.d. 657 7 -
Big Rock C.s.d. 650 48 -
Redwood Maint. & Oper. 421 15 -
Klamath C.s.d. 360 29 -
Northcrest Trailer City 250 27 -
Redwood Park C.s.d. 200 16 -
Trees of Mystery 200 38 -
Klamath Camper Corral 200 2 -
Hrc C.s.d. 185 28 -
Golden Bear RV Park 153 14 -
Pine Grove Trailer Park 142 18 -
Calfire-Alder Conservation Camp 135 14 -
Margaret Keating Main. & Oper. 120 15 -
Las Palmas Mobile Home Park 120 19 -
West Park Properties 112 23 -
Kamp Klamath Corp. 110 17 -
Chinook Water System 100 22 -
Caltrans-Collier Tunnel Rs 100 30 -
Hunter Valley Csd 96 9 -
Crescent Beach Motel 70 3 -
Butte Court Mobile Home Park 65 25 -
Rock Creek Mutual Water Co. 60 35 -
Lagoon Creek-Redwood Np 60 2 -
Sea West Restaurant 60 24 -
Jed Smith Homeowners Assn. 58 7 -
Klamath River RV Park 51 9 -
Crivelli's Water System 30 4 -

Compare beyond California

Mid-flagged peers for Del Norte County

Cross-state counties nearest Del Norte County on flagged-system share (96.9%) and cumulative violation count (518). 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.