Williamson County, Tennessee
SDWIS compliance plate
Sheet TN187 · Williamson County 7 sys · 510 viol · #278/3254
VIOL-SEVERE · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-MID · SRC-SW · SYS-TINY · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-MID 25.3% health
- RANK-TOP #278/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-MID 33.3% detect
- SRC-SW SW lead 100%
- SYS-TINY 7 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Davidson County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Williamson County ranks #278 of 3,254 counties by people served, and #8 of 95 counties in Tennessee. See methodology · corpus placement.
Williamson County standing, mid-flagged corpus third
Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 25.3% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 33.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #278 of 3,254 · #8 of 95 in Tennessee.
Flagged-rate neighbourhood around Williamson County
Lowest/highest poles plus in-state counties nearest Williamson County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Franklin Water Dept | 77,222 | 291 | Detected |
| H.b.& T.s. Utility District | 40,094 | 57 | Clean |
| Milcrofton Utility District | 38,032 | 24 | Clean |
| Nolensville-College Grove U.d. | 32,793 | 59 | Detected |
| Brentwood Water Department | 30,493 | 12 | Clean |
| Mallory Valley U.d. | 30,347 | 20 | Clean |
| Gateway Utility Company, Inc. | 1,070 | 47 | - |
Compare beyond Tennessee
Mid-flagged peers for Williamson County
Cross-state counties nearest Williamson County on flagged-system share (100.0%) and cumulative violation count (510). 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.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
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.