PlainWater
Counties → South Carolina

York County, South Carolina

SDWIS compliance plate

Sheet SC091 · York County 137 sys · 8,274 viol · #336/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · ABOVE-PEER · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 70.8% flagged
  • HEALTH-LOW 9.3% health
  • RANK-TOP #336/3254
  • ABOVE-PEER +1.1 pp
  • PFAS-HIGH 85.7% detect
  • SRC-GW GW lead 78%
  • SYS-LARGE 137 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Clarendon County ( -1.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, York County ranks #336 of 3,254 counties by people served, and #8 of 46 counties in South Carolina. See methodology · corpus placement.

York County standing, lower-flagged corpus third

Flagged-system rate 70.8% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 9.3% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 85.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #336 of 3,254 · #8 of 46 in South Carolina.

Flagged-rate neighbourhood around York County

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

0% 20% 40% 60% 80% 100% Horry · lowest Saluda · near York · this county Lee · highest 26.4% 66.7% 68.8% 69.7% 70.8% 73.9% 100%

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

Water Systems

System Name Population Violations PFAS
Rock Hill City of (Sc4610002) 82,846 29 Detected
York County East WD (Sc4620002) 30,225 82 Detected
Fort Mill Town of (Sc4610003) 25,000 25 Detected
York County West WD (Sc4620003) 18,273 37 Detected
Tega Cay City of (Sc4610008) 10,500 15 Detected
York City of (Sc4610001) 8,700 107 Detected
Clover Town of (Sc4610006) 8,400 18 Clean
Riverview Rural Cws (Sc4620001) 2,200 27 -
Lake Wylie MHP (Sc4660081) 1,225 7 -
Hickory Grove Town of (Sc4610004) 654 4 -
Sharon Town of (Sc4610005) 573 4 -
Bgwc Foxwood (Sc4650008) 570 134 -
Twin Lakes Estates (Sc4660007) 550 6 -
Bgwc Wintercrest (Sc4650017) 503 365 -
Clover Sch Dist Bethany School (4670101) 450 4 -
Catawba Indian Nation Cws (Sc4650063) 446 50 -
Bgwc Country Oaks (Sc4650020) 359 404 -
Adnah Hills MHP (Sc4660115) 350 13 -
Metrolina Employee Housing (Sc4640005) 300 0 -
Glen at Clover LLC the (Sc4660064) 300 77 -
Cedar Valley MHP (Sc4660009) 290 63 -
Green Earth PWS (Sc4610009) 280 3 -
Shield of Faith (4670957) 250 6 -
Quail Meadows Park LLC (Sc4660063) 221 7 -
Bgwc Carowood (Sc4650035) 212 181 -
Bgwc Olympic Acres (Sc4650053) 209 112 -
Sanderson Property (Sc4672008) 200 1 -
The Peach Tree (Sc4672009) 200 0 -
Dollar General-Hwy 324 (Sc4674003) 200 4 -
Dollar General - Eastview (Sc4674011) 200 0 -
Dollar General - McConnells (Sc4674012) 200 0 -
Dollar General #13478 Catawba (4679020) 200 0 -
Bgwc Brown Borough (Sc4650061) 193 63 -
Bgwc Silver Lakes-Windwood (Sc4650034) 191 424 -
Bgwc Shandon (Sc4650009) 183 54 -
Bgwc Ridgewood (Sc4650031) 175 216 -
Bgwc Woodbridge (Sc4650028) 173 411 -
Chucks MHP (Sc4660077) 168 36 -
Camp Canaan (Sc4670806) 160 0 -
Southtown Water Sports Park (Sc4674007) 160 2 -
Bgwc Shiloh Quarters (Sc4660092) 157 715 -
Bgwc Kims Acres (Sc4650041) 152 166 -
Bgwc Pepperidge (Sc4660101) 142 241 -
Scprt-Kings Mtn Sp-Camp Cherokee 4670881 141 25 -
Bgwc Mallard Lakes (Sc4650057) 137 64 -
Pine Grove Church Cdc (Sc4679015) 130 4 -
Goods MHP (Sc4660098) 128 4 -
Willwood S/D (4650004) 122 10 -
Bgwc Hidden Lakes (Sc4650040) 121 201 -
Scprt-Kings Mt Crawford (Sc4670603) 120 10 -

Compare beyond South Carolina

Lower-flagged peers for York County

Cross-state counties nearest York County on flagged-system share (70.8%) and cumulative violation count (8,274). 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.