PlainWater

Franklin County, Washington

SDWIS compliance plate

Sheet WA021 · Franklin County 79 sys · 3,941 viol · #473/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · ABOVE-PEER · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 74.7% flagged
  • HEALTH-LOW 12.2% health
  • RANK-TOP #473/3254
  • ABOVE-PEER +4.9 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 97%
  • SYS-MID 79 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Grant County ( -4.9 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Franklin County ranks #473 of 3,254 counties by people served, and #13 of 39 counties in Washington. See methodology · corpus placement.

Franklin County standing, lower-flagged corpus third

Flagged-system rate 74.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 12.2% 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 #473 of 3,254 · #13 of 39 in Washington.

Flagged-rate neighbourhood around Franklin County

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

0% 20% 40% 60% 80% 100% Grant · lowest Ferry · near Columbia · near 69.8% 74.7% 81.3% 82.3% 83.3% 100%

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

Water Systems

System Name Population Violations PFAS
Pasco Water Department 116,342 62 Clean
Connell City Of 5,150 133 Clean
Basin City Water Sewer District 1,740 68 -
Lamb-Weston Pasco 650 40 -
Pasco Port of 210 500 27 -
Mesa Water Department 495 74 -
Country Mercantile 398 31 -
White Bluff Water Association 386 49 -
Ringold Domestic Water Corp 340 54 -
West Mesa Domestic Water Assn 316 244 -
Palouse Falls State Park 292 11 -
Kahlotus City Of 262 326 -
Cypress Country Estates 253 45 -
Edwin Markham 216 63 -
Clark Addition Water System 189 6 -
Unit 67 184 3 -
Levey Park 181 3 -
West 15 Domestic Water Assn 150 85 -
Old German Baptist Church New Conf 140 16 -
Pasco Heights Domestic Water Assn 135 54 -
Radar Hill Water System 128 119 -
Rangeview 122 27 -
Scootenay Water Assn Inc 120 309 -
Pasco Golfland Inc 108 40 -
Eltopia Water Association 100 227 -
Ringold Farmworker Housing 99 6 -
Zirkle-Pasco Ranch #4 99 2 -
North Slope Estates Property 97 20 -
Windust Park 97 0 -
Zirkle - Pasco Ranch 1 96 0 -
Zirkle - Pasco Ranch #2 96 0 -
Zirkle - Pasco Ranch #3 96 0 -
Hi-Point Housing 96 2 -
Ice Harbor Riverview 96 0 -
Flat Top Ranch West Bank Housing 96 3 -
Zirkle-Pasco Ranch #5 96 0 -
Underwood H2A Housing 1 96 0 -
Canyon Farm Camp 96 21 -
Underwood H2A Housing 2 96 0 -
Sagemoor Cherry Harvest Camp 96 2 -
Borton - Mesa Rock Ranch 96 0 -
Chiawana - Klingeman Ranch 95 181 -
Graystone WS 94 14 -
Arrow Ridge Farmworker Housing 93 0 -
Hi-Point 2 93 0 -
Coulee Flats Dairy 83 86 -
Clearwater Domestic Water Assn 78 89 -
River Ridge Estates 77 9 -
Riverside H2A Housing 77 4 -
Country Christian Center 75 12 -

Compare beyond Washington

Lower-flagged peers for Franklin County

Cross-state counties nearest Franklin County on flagged-system share (74.7%) and cumulative violation count (3,941). 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
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.