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Counties → Idaho

Jefferson County, Idaho

SDWIS compliance plate

Sheet ID051 · Jefferson County 63 sys · 2,465 viol · #1794/3254

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

  • VIOL-SEVERE 96.8% flagged
  • HEALTH-LOW 9.8% health
  • RANK-MID #1794/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 63 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Jefferson County ranks #1,794 of 3,254 counties by people served, and #15 of 44 counties in Idaho. See methodology · corpus placement.

Jefferson County standing, mid-flagged corpus third

Flagged-system rate 96.8% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 9.8% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,794 of 3,254 · #15 of 44 in Idaho.

Flagged-rate neighbourhood around Jefferson County

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

0% 20% 40% 60% 80% 100% Valley · lowest Bonner · near Jefferson · this county Camas · highest 89.5% 96.6% 96.7% 96.7% 96.8% 97.3% 100%

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

Water Systems

System Name Population Violations PFAS
Rigby City Of 5,400 88 Clean
11 Labelle 3 Rigby 2,3 884 11 -
Labelle Lds Church 813 1 -
Garfield 3rd & 4th Ward Lds-5857596 720 0 -
Menan Lds Stake Center 682 1 -
Roberts City Of 680 75 -
Rigby 11th Ward-5001111 678 0 -
Ririe City Of 656 50 -
Terreton Elementary High Als Schools 640 61 -
Ririe W Lds Church Clark Shelton-5069203 571 3 -
Garfield 1st Ward-5069270 497 1 -
Grant Lds Church 473 16 -
Morning View Water Company 459 44 -
Country Squire Estates 450 6 -
Midway Elementary School 384 32 -
Terreton Lds Stake Center 361 9 -
M and T Water and Sewer Dist 358 42 -
Lewisville Lds Church 337 1 -
Pepperwood Crossing/Rocky Mnt Utilities 336 204 -
Menan Lds Church 266 4 -
Hamer Lds Church 264 12 -
Idaho Pacific Corp 225 26 -
Idahoan Foods Lewisville Plant 200 26 -
Krupp Scout Hollow 200 63 -
Jefferson Greens Estates 193 67 -
Idahoan Foods Lewisville Office &Pckging 170 39 -
Monteview Lds Church 165 4 -
Jeff Hills Golf and Recreation 150 57 -
Kelly Canyon Winter Park LLC 150 63 -
Jefferson County Lake 150 29 -
Sunbrook Estates Div # 2 144 19 -
Rolling Hills Acres 141 287 -
Rigby Produce Hamer Division 125 142 -
Klim 125 164 -
Jenco Acres 105 32 -
Bear Island Water Assn 100 62 -
Heise Hot Springs 100 34 -
Valley Wide Co Op 100 47 -
Elk Meadows 100 24 -
Parkwood Acres Water Company 88 23 -
Rigby Air Village LLC 80 41 -
Challenger Pallet and Supply Inc 60 4 -
Teton House 56 42 -
7N Ranch 56 21 -
Ireland Acres 1 54 60 -
Terreton Pump 2 50 87 -
Sage Junction Port of Entry Itd 50 9 -
Bethel Baptist Church 50 37 -
Camas National Wildlife Refuge 50 7 -
Hillman Trailer Court 45 9 -

Compare beyond Idaho

Mid-flagged peers for Jefferson County

Cross-state counties nearest Jefferson County on flagged-system share (96.8%) and cumulative violation count (2,465). 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.