Modoc County, California
SDWIS compliance plate
Sheet CA049 · Modoc County 15 sys · 147 viol · #2743/3254
VIOL-SEVERE · HEALTH-MID · RANK-BOTTOM · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 86.7% flagged
- HEALTH-MID 40.1% health
- RANK-BOTTOM #2743/3254
- PHOTO-FINISH ±0.5 pp
- PFAS-HIGH 100.0% detect
- SRC-GW GW lead 100%
- SYS-SMALL 15 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Colusa County ( -0.5 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Modoc County ranks #2,743 of 3,254 counties by people served, and #58 of 58 counties in California. See methodology · corpus placement.
Modoc County standing, lower-flagged corpus third
Flagged-system rate 86.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 40.1% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #2,743 of 3,254 · #58 of 58 in California.
Flagged-rate neighbourhood around Modoc County
Lowest/highest poles plus in-state counties nearest Modoc County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| City of Alturas | 2,715 | 14 | Detected |
| California Pines C.s.d. | 862 | 15 | - |
| Newell County Water District | 629 | 37 | - |
| Cedarville County Water Dist. | 600 | 5 | - |
| Mdf-Blue Lake Cg | 200 | 18 | - |
| Cal Fire-Devil's Garden Camp | 120 | 10 | - |
| Isot Community Water System | 116 | 2 | - |
| Modoc Vineyard Academy | 53 | 6 | - |
| Mdf-Adin Ranger Station | 50 | 15 | - |
| Sully's RV Park | 30 | 4 | - |
| Likely Place Golf and RV Resort | 25 | 8 | - |
| Arrowhead Golf Course | 25 | 8 | - |
| The Oney Frosty in Town | 25 | 5 | - |
| Adin Supply Co. | 25 | 0 | - |
| Fort Bidwell Hotel | 25 | 0 | - |
Compare beyond California
Lower-flagged peers for Modoc County
Cross-state counties nearest Modoc County on flagged-system share (86.7%) and cumulative violation count (147). 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.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
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.