PlainWater
Counties → Missouri

Franklin County, Missouri

SDWIS compliance plate

Sheet MO071 · Franklin County 84 sys · 5,402 viol · #730/3254

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

  • VIOL-SEVERE 95.2% flagged
  • HEALTH-MID 23.2% health
  • RANK-UPPER #730/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-MID 25.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 84 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Franklin County ranks #730 of 3,254 counties by people served, and #15 of 115 counties in Missouri. See methodology · corpus placement.

Franklin County standing, mid-flagged corpus third

Flagged-system rate 95.2% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 23.2% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 25.0% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #730 of 3,254 · #15 of 115 in Missouri.

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% Shannon · lowest Franklin · this county Polk · near Mercer · highest 69.6% 95% 95.2% 95.2% 95.5% 95.5% 100%

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

Water Systems

System Name Population Violations PFAS
Washington PWS 14,068 90 Clean
Union PWS 12,348 112 Clean
Franklin County PWSD 3 8,250 36 Clean
Sullivan PWS 7,081 12 Clean
Pacific PWS 6,000 92 Clean
St Clair PWS 4,700 84 Detected
Franklin County PWSD 1 3,500 51 Clean
New Haven PWS 2,000 39 -
Gerald PWS 1,383 75 -
Franklin County PWSD 3 St Albans 1,300 24 -
Franklin County PWSD 4 760 52 -
Franklin County PWSD 3 Lake Serene 600 64 -
Oak Grove Village PWS 508 24 -
Wagners Store 500 3 -
Coleman Elementary School 485 15 -
Meramec Caverns 400 57 -
Lonedell R Xiv Elementary School 385 49 -
Argyle Estates Water Supply 380 166 -
Franklin County Water Company Inc 350 105 -
Nike Elementary School 300 18 -
Silver Oaks 300 26 -
Berger PWS 256 35 -
Village Greens 250 0 -
Sylvan Manor Subd 240 83 -
Melody Lake Water & Sewer 230 67 -
Spring Bluff R Xv Elementary School 220 9 -
Camp MO Val Camp Tambo 200 103 -
Robertsville Elementary School 190 22 -
Crestview Acres Subd 150 76 -
Miramiguoa Park 150 72 -
Evergreen Lake Estates 150 80 -
Franklin County R II Elementary School 150 29 -
Cedar Vale MHP 142 191 -
Meramec State Park Campgrd 138 4 -
Spring Meadows MHP 135 159 -
Bourbeuse MHP 125 60 -
Purina Animal Nutrition Center 125 41 -
Tall Oaks MHP 120 93 -
Campbellton Elementary School 120 29 -
Sirenity Farms Campground 120 4 -
Franklin County Special School Dist 111 6 -
Holtgrewe Farms Subdivision 110 11 -
Woodland Hills Subd 110 129 -
Meramec State Park Dining Lodge 100 4 -
Forty Acre Club 100 91 -
Cedar Creek Conference Center 100 113 -
Triple 3 Vineyard Winery and Event Cntr 100 21 -
Meramec Campground LLC 100 41 -
Paradise MHP 98 146 -
Hillshine Acres Subd 80 208 -

Compare beyond Missouri

Mid-flagged peers for Franklin County

Cross-state counties nearest Franklin County on flagged-system share (95.2%) and cumulative violation count (5,402). 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.