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Counties → Washington

Grays Harbor County, Washington

SDWIS compliance plate

Sheet WA027 · Grays Harbor County 88 sys · 13,309 viol · #661/3254

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

  • VIOL-SEVERE 94.3% flagged
  • HEALTH-LOW 2.0% health
  • RANK-UPPER #661/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 95%
  • SYS-MID 88 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Grays Harbor County ranks #661 of 3,254 counties by people served, and #19 of 39 counties in Washington. See methodology · corpus placement.

Grays Harbor County standing, mid-flagged corpus third

Flagged-system rate 94.3% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 2.0% 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 #661 of 3,254 · #19 of 39 in Washington.

Flagged-rate neighbourhood around Grays Harbor County

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

0% 20% 40% 60% 80% 100% Grant · lowest Grays Harbor · this county Wahkiakum · highest 69.8% 93.9% 94.1% 94.3% 94.3% 94.5% 100%

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

Water Systems

System Name Population Violations PFAS
Aberdeen City Of 17,958 14 Clean
Hoquiam Water Department 11,456 10 Clean
Ocean Shores Water Dept 9,347 152 Clean
Elma City Of 6,638 28 Clean
Montesano City Of 5,492 25 Clean
Westport Water Department 5,346 881 Clean
Grays Harbor Co Water Dist 2 5,112 73 Clean
McCleary City Of 2,753 34 -
Pacific Beach/Moclips 2,372 17 -
Cosmopolis Water Department 1,812 62 -
Hogans Corner 1,458 58 -
Oakville City Of 1,325 149 -
Grays Harbor Co Water Dist 1 1,302 294 -
Elma Rest Area 1,122 34 -
Lake Quinault 1,003 1,331 -
Illahee Oyehut 971 26 -
Ocean Breeze Resort 687 24 -
Satsop Business Park 544 5,255 -
Wynoochee Wildwood Park 471 56 -
Ocean Shores Outdoor Club 309 16 -
Griffith Priday State Park 280 8 -
Surfcrest Properties LLC 256 8 -
Greenwood Mobile Home Park 240 482 -
Ocean City 237 1,193 -
Neilton Meadowland WD 8 A 222 184 -
Meadowood Development 220 72 -
Monte View Estates 200 18 -
Malone 181 32 -
Green Lantern Pub 175 17 -
Sea View 170 23 -
Coho Campground 152 17 -
Briggs Nursery 150 34 -
Country Estates 150 55 -
Haven by the Sea 145 27 -
Gold Beach Aviation 134 22 -
Iron Springs Resort 120 22 -
Clarks Restaurant 109 6 -
Humptulips Grocery 105 9 -
Bay City Sausage 104 21 -
South Arbor 101 1 -
Humptulips Grange #730 100 1 -
Forestview Senior Community LLC 92 29 -
Bay City Properties 90 87 -
Ocean Spray Cranberries 90 61 -
Screamin Eagle Campground 86 15 -
Vaughan Pumps 85 450 -
Murphy Elma Veneer 80 28 -
Oceana II East 80 11 -
Paradise Water Assoc 74 335 -
Harbor Mobile Estates 72 288 -

Compare beyond Washington

Mid-flagged peers for Grays Harbor County

Cross-state counties nearest Grays Harbor County on flagged-system share (94.3%) and cumulative violation count (13,309). 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.