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Counties → Texas

McLennan County, Texas

SDWIS compliance plate

Sheet TX309 · McLennan County 58 sys · 8,955 viol · #246/3254

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

  • VIOL-SEVERE 98.3% flagged
  • HEALTH-MID 31.4% health
  • RANK-TOP #246/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-HIGH 61.5% detect
  • SRC-GW GW lead 72%
  • SYS-MID 58 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Williamson County ( -0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, McLennan County ranks #246 of 3,254 counties by people served, and #21 of 254 counties in Texas. See methodology · corpus placement.

McLennan County standing, mid-flagged corpus third

Flagged-system rate 98.3% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 31.4% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 61.5% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #246 of 3,254 · #21 of 254 in Texas.

Flagged-rate neighbourhood around McLennan County

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

0% 20% 40% 60% 80% 100% Howard · lowest Val Verde · near Williamson · near Bee · highest 66.7% 97% 97.3% 98% 98.1% 98.3% 100%

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

Water Systems

System Name Population Violations PFAS
City of Waco 146,241 5 Detected
City of Hewitt 16,978 39 Detected
City of Robinson 12,650 20 Detected
City of Bellmead 10,664 51 Clean
City of Woodway 9,383 54 Detected
City of Lacy Lakeview 7,275 86 Detected
Texas State Technical College - Waco 6,533 49 Detected
City of Bruceville Eddy 5,769 20 Detected
City of McGregor 5,600 142 Detected
Elm Creek WSC 4,620 198 Clean
Cross Country WSC 3,939 124 Clean
Gholson WSC 3,903 41 -
Chalk Bluff WSC 3,852 32 Clean
McLennan County Wcid 2 3,100 16 -
Western Hills Water System 3,048 12 -
Spring Valley WSC 2,700 13 -
City of West 2,597 310 -
Ross WSC 2,589 25 -
Bold Springs WSC 2,301 13 -
Levi WSC 2,298 41 -
Eol WSC 2,195 615 -
China Spring Water 2,070 12 -
North Bosque WSC 2,061 4 -
City of Mart 1,846 612 -
City of Lorena 1,776 75 -
H & H WSC 1,767 3 -
Leroy Tours Gerald WSC 1,680 564 -
City of Moody 1,525 52 -
City of Riesel 1,476 415 -
Sanderson Farms Waco Facility 1,400 0 -
Axtell WSC 1,320 558 -
Pure WSC 1,125 26 -
East Crawford WSC 972 13 -
Hilltop WSC 972 4 -
City of Crawford 950 29 -
Central Bosque WSC 879 3 -
M S WSC 744 584 Clean
Hog Creek WSC 744 135 -
Windsor Water 732 88 -
Cottonwood WSC 720 15 -
C S Community WSC 432 8 -
Rivercrest Water 378 2 -
North Bosque Estates Water Supply 330 14 -
Valley Mills High School 300 98 -
Moores Water System 285 1,574 -
Bosque Basin WSC 225 204 -
Patrick WSC 220 12 -
North County Water Supply 215 13 -
Rolling Hills Water Supply 186 1,406 -
Goodall Water System 168 22 -

Compare beyond Texas

Mid-flagged peers for McLennan County

Cross-state counties nearest McLennan County on flagged-system share (98.3%) and cumulative violation count (8,955). 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.