Collin County, Texas
SDWIS compliance plate
Sheet TX085 · Collin County 35 sys · 1,149 viol · #41/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-LOW 7.6% health
- RANK-TOP #41/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-HIGH 100.0% detect
- SRC-SW SW lead 80%
- SYS-SMALL 35 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Hidalgo County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Collin County ranks #41 of 3,254 counties by people served, and #6 of 254 counties in Texas. See methodology · corpus placement.
Collin 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 7.6% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #41 of 3,254 · #6 of 254 in Texas.
Flagged-rate neighbourhood around Collin County
Lowest/highest poles plus in-state counties nearest Collin County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| City of Plano | 292,059 | 17 | Detected |
| City of Frisco | 231,910 | 42 | Detected |
| City of McKinney | 224,043 | 12 | Detected |
| City of Allen | 104,870 | 10 | Detected |
| City of Celina | 52,701 | 57 | Detected |
| City of Wylie | 47,322 | 11 | Detected |
| Town of Prosper | 42,598 | 5 | Detected |
| City of Princeton | 37,019 | 51 | Detected |
| Culleoka WSC | 24,615 | 17 | Detected |
| City of Anna | 23,960 | 70 | Detected |
| City of Murphy | 19,185 | 18 | Detected |
| City of Melissa | 18,020 | 27 | Detected |
| East Fork Sud | 17,589 | 4 | Detected |
| Bear Creek Sud | 15,822 | 18 | Detected |
| Wylie Northeast Sud | 11,430 | 14 | Detected |
| Town of Fairview | 11,100 | 88 | Detected |
| North Collin Sud | 10,674 | 34 | Detected |
| City of Josephine | 9,800 | 25 | Detected |
| City of Lucas | 9,080 | 20 | Detected |
| City of Parker | 6,486 | 74 | Detected |
| City of Farmersville | 5,312 | 57 | Detected |
| Copeville Sud | 4,375 | 23 | Detected |
| Nevada Sud | 4,218 | 15 | Detected |
| Verona Sud | 3,672 | 27 | - |
| Milligan WSC | 3,364 | 20 | - |
| North Custer Road Plant | 2,754 | 8 | - |
| Frognot Sud | 2,643 | 18 | - |
| Westminster Sud | 2,424 | 4 | - |
| Desert WSC | 2,091 | 18 | - |
| Seis Lagos Utility District | 2,037 | 26 | - |
| City of Blue Ridge | 1,189 | 44 | - |
| Weston WSC | 912 | 40 | - |
| North Farmersville WSC | 747 | 93 | - |
| Air Park Estates | 96 | 99 | - |
| North Texas MWD Wylie WTP | 93 | 43 | - |
Compare beyond Texas
Mid-flagged peers for Collin County
Cross-state counties nearest Collin County on flagged-system share (100.0%) and cumulative violation count (1,149). 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.