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Counties → Arizona

Coconino County, Arizona

SDWIS compliance plate

Sheet AZ005 · Coconino County 116 sys · 13,681 viol · #363/3254

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

  • VIOL-SEVERE 96.6% flagged
  • HEALTH-LOW 5.6% health
  • RANK-TOP #363/3254
  • PHOTO-FINISH ±0.7 pp
  • PFAS-MID 37.5% detect
  • SRC-GW GW lead 93%
  • SYS-MID 116 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Maricopa County (+ 0.7 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Coconino County ranks #363 of 3,254 counties by people served, and #7 of 15 counties in Arizona. See methodology · corpus placement.

Coconino County standing, mid-flagged corpus third

Flagged-system rate 96.6% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 5.6% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 37.5% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #363 of 3,254 · #7 of 15 in Arizona.

Flagged-rate neighbourhood around Coconino County

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

0% 20% 40% 60% 80% 100% Yuma · lowest Coconino · this county Mohave · near Greenlee · highest 94.1% 95.7% 96.6% 97.2% 97.5% 97.6% 100%

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

Water Systems

System Name Population Violations PFAS
Flagstaff City Of 76,960 1,061 Detected
Grand Canyon National Park 16,590 424 Clean
Arizona Water Co - Sedona 12,104 259 Detected
Doney Park Water 8,996 604 Clean
Arizona Water Co - Pinewood 8,089 48 Clean
Page City Of 7,420 173 Clean
Glen Canyon Nra Wahweap 4,439 403 Detected
Kachina Village Dwid 3,500 216 Clean
Williams City Of 3,145 314 -
Blue Ridge Dwid 1,920 98 -
Forest Lakes Water Improvement District 1,746 111 -
Utility Source LLC 1,710 113 -
Hydro Resources-Tusayan 1,710 306 -
Forest Highlands Water Company 1,668 83 -
Ponderosa Utility Corp 1,585 134 -
AZ State Parks Slide Rock 1,500 93 -
Bearizona 1,423 45 -
Fredonia Town Of 1,327 415 -
Cameron Trading Post 1,270 320 -
Adot Airport Grand Canyon 1,140 317 -
Adot Meteor Crater Rest Area 1,006 44 -
Adot Oak Creek Rim M/S - Overlook Vista 1,000 36 -
Wupatki National Monument 1,000 46 -
Usfs Asnf Woods Canyon - Aspen Camp Area 900 63 -
Gcnra Lees Ferry 890 138 -
Greenehaven Water Company 807 121 -
Meteor Crater Visitor Center 750 56 -
Sturgeon Cromer Elem School 750 208 -
Happy Jack RV Park 750 16 -
Walnut Canyon Natl Monument 700 24 -
Newton Water Well 665 176 -
Usfs Conf Pine Flat Campground 650 54 -
Young Life Lost Canyon Campground 600 33 -
Clints Well Gas and Go 500 69 -
Thriftway Store #281 Gray Mountain 450 70 -
Grand Canyon Junction Hydro 430 205 -
Grand Canyon Caverns 400 122 -
Hidden Hollow Mhc 400 103 -
Cs Mormon Lake Water Company 353 90 -
Mormon Lake Lodge 350 30 -
Camp Navajo 350 90 -
Cs Flagstaff Ranch Water Company 350 179 -
Cs Mormon Lake-Upper Village 324 40 -
Marble Canyon Lodge 300 194 -
Usfs Asnf Canyon Point Campground 300 20 -
Usfs Conf Cave Springs 280 30 -
Under Canvas Grand Canyon 275 0 -
Grand Canyon Drinking Water 260 73 -
Mustang River Grill 250 36 -
Mountain Dell Water Inc 250 123 -

Compare beyond Arizona

Mid-flagged peers for Coconino County

Cross-state counties nearest Coconino County on flagged-system share (96.6%) and cumulative violation count (13,681). 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.