County profile · EPA SDWIS + UCMR5
Johnson County, Tennessee
7 SDWIS-listed public water systems serve 11,467 people in Johnson County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 7
- SDWIS water systems Smaller third of counties
- 832
- Total violations Middle third of counties
- 85.7%
- SDWIS systems w/ a violation Lower third of counties
- 100.0%
- UCMR5 PFAS rate (1 tested) Upper third of counties with tests
SDWIS compliance plate
Sheet TN091 · Johnson County 7 sys · 832 viol · #2240/3254
VIOL-SEVERE · HEALTH-MID · RANK-LOWER · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-TINY · BOOK-FULL
- VIOL-SEVERE 85.7% flagged
- HEALTH-MID 25.4% health
- RANK-LOWER #2240/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-HIGH 100.0% detect
- SRC-GW GW lead 71%
- SYS-TINY 7 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Madison County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Johnson County ranks #2,240 of 3,254 counties by people served, and #82 of 95 counties in Tennessee. See methodology · corpus placement.
Johnson County standing, lower-flagged corpus third
Flagged-system rate 85.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 25.4% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #2,240 of 3,254 · #82 of 95 in Tennessee.
Flagged-rate neighbourhood around Johnson County
Lowest/highest poles plus in-state counties nearest Johnson County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Mountain City Water Dept | 9,304 | 267 | Detected |
| Carderview Utility District | 1,130 | 262 | - |
| Brownlow Utility District | 683 | 193 | - |
| Pioneer Landing | 140 | 71 | - |
| Dyson Grove Baptist Church | 100 | 0 | - |
| Sharpie's Restaurant | 85 | 30 | - |
| Shady Valley Country Store | 25 | 9 | - |
Compare beyond Tennessee
Lower-flagged peers for Johnson County
Cross-state counties nearest Johnson County on flagged-system share (85.7%) and cumulative violation count (832). 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. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.