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Counties → Idaho

Latah County, Idaho

SDWIS compliance plate

Sheet ID057 · Latah County 35 sys · 2,229 viol · #1076/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 19.7% health
  • RANK-UPPER #1076/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 94%
  • SYS-SMALL 35 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Latah County ranks #1,076 of 3,254 counties by people served, and #8 of 44 counties in Idaho. See methodology · corpus placement.

Latah County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.7% 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 #1,076 of 3,254 · #8 of 44 in Idaho.

Flagged-rate neighbourhood around Latah County

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

0% 20% 40% 60% 80% 100% Valley · lowest Camas · highest Payette · near Boundary · near 89.5% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Moscow Water Dept 26,000 73 Clean
University of Idaho 8,589 6 Clean
Genesee City Of 1,044 68 -
Troy City Of 850 448 -
Potlatch City Of 812 21 Clean
Juliaetta City Of 624 128 -
Deary City Of 529 25 -
Kendrick City Of 313 118 -
Camp Grizzly Boy Scouts 300 32 -
North Tomer Butte W&S District 259 57 -
Bovill Water Dept 256 51 -
Onaway Water and Sewer Assn 200 21 -
Bennett Lumber Products Inc 150 14 -
Apex Living Community 150 131 -
Appaloosa Community 129 23 -
Mineral Mountain Rest Area Itd 100 10 -
Moscow Elks Golf Course 100 49 -
Country Homes Mobile Park 90 2 -
Usfs Laird Park Campground 86 77 -
Hoo Doo Harvard Water and Sewer Dist 82 217 -
Viola Water and Sewer Dist 78 14 -
Tamarack Family Dining 75 55 -
Hidden Village MHP, LLC 66 15 -
Evergreen Community LLC 65 23 -
Woodland Heights MHP 60 25 -
Y Mobile Home Park 52 56 -
Cone Delfred Subd 40 65 -
Fab Tec 40 9 -
Helmer Water Assn 30 15 -
Palouse Hills Christian School 25 105 -
Usfs Giant White Pine Campground 25 15 -
Usfs Little Boulder Creek Campground 25 35 -
Tenicor 25 38 -
Renaissance RV Park 24 147 -
Pines RV Park 10 41 -

Compare beyond Idaho

Mid-flagged peers for Latah County

Cross-state counties nearest Latah County on flagged-system share (100.0%) and cumulative violation count (2,229). 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.