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Counties → Iowa

Polk County, Iowa

SDWIS compliance plate

Sheet IA153 · Polk County 38 sys · 1,563 viol · #128/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · ABOVE-PEER · PFAS-LOW · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 76.3% flagged
  • HEALTH-LOW 18.7% health
  • RANK-TOP #128/3254
  • ABOVE-PEER +1.3 pp
  • PFAS-LOW 9.1% detect
  • SRC-SW SW lead 68%
  • SYS-SMALL 38 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Mahaska County ( -1.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Polk County ranks #128 of 3,254 counties by people served, and #1 of 99 counties in Iowa. See methodology · corpus placement.

Polk County standing, lower-flagged corpus third

Flagged-system rate 76.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 18.7% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 9.1% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #128 of 3,254 · #1 of 99 in Iowa.

Flagged-rate neighbourhood around Polk County

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

0% 20% 40% 60% 80% 100% Mahaska · lowest Woodbury · near Wapello · near 75% 76.3% 78.1% 78.6% 80% 100%

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

Water Systems

System Name Population Violations PFAS
Des Moines Water Works 246,055 50 Clean
Ankeny, City Of 76,207 386 Clean
West Des Moines Water Works 68,723 21 Clean
Urbandale Water Utility 45,605 11 Clean
Johnston Municipal Water Supply 24,064 21 Clean
Altoona Water Supply 19,565 124 Clean
Clive Water Department 19,010 19 Clean
Grimes Water Supply 15,392 40 Clean
Bondurant Muni Water Supply 9,393 27 Detected
Southeast Polk RWD 7,565 102 Clean
Polk City Water Supply 6,533 17 Clean
Mitchellville Water Supply 2,515 48 -
Park View Village 1,800 24 -
Camp Dodge Water Supply 1,169 79 -
Autumn Ridge Estates MHP 1,032 58 -
Elkhart Water Supply 882 77 -
Yes Regency Manor LLC 710 24 -
The Meadows 702 0 -
Yes Western Village LLC 670 0 -
Southridge Estate 648 8 -
Val Vista Estates 553 0 -
Ewing Trace Mhc 455 8 -
Southwest Polk Water Service, Inc. 393 30 -
Stover Heights Mhc 393 0 -
Hickory Hollow Water Service, Inc. 375 81 -
Sunnybrook Mobile Home Park 360 4 -
Pleasant Valley Manufactured Home Comm 350 55 -
Greenwood Acres Water Co. 325 18 -
Sheldahl Water Supply 307 158 -
Hillock Estates 228 0 -
Oakwood Park Water Inc. 218 45 -
Grimes MHP Mhc 163 6 -
Rocklyn MHP 103 16 -
Vca Avondale Animal Hospital 64 6 -
Ciww (Dmww) 25 0 -
Ciww (Grimes) 25 0 -
Ciww ( Polk City) 25 0 -
Ciww (Wdmww) 25 0 -

Compare beyond Iowa

Lower-flagged peers for Polk County

Cross-state counties nearest Polk County on flagged-system share (76.3%) and cumulative violation count (1,563). 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.