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Counties → Pennsylvania

Lehigh County, Pennsylvania

SDWIS compliance plate

Sheet PA077 · Lehigh County 201 sys · 15,405 viol · #239/3254

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

  • VIOL-SEVERE 96.5% flagged
  • HEALTH-LOW 11.9% health
  • RANK-TOP #239/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 81.8% detect
  • SRC-GW GW lead 94%
  • SYS-LARGE 201 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Susquehanna County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Lehigh County ranks #239 of 3,254 counties by people served, and #12 of 68 counties in Pennsylvania. See methodology · corpus placement.

Lehigh County standing, mid-flagged corpus third

Flagged-system rate 96.5% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 81.8% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #239 of 3,254 · #12 of 68 in Pennsylvania.

Flagged-rate neighbourhood around Lehigh County

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

0% 20% 40% 60% 80% 100% Greene · lowest Susquehanna · near Elk · near Sullivan · highest 66.7% 96.5% 96.5% 96.5% 96.6% 96.7% 100%

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

Water Systems

System Name Population Violations PFAS
Lca Allentown Division 118,000 43 Detected
Lca Wlsa Central Division 47,693 283 Detected
Swt Main System 14,500 536 Detected
Emmaus Borough Public Water 14,000 319 Detected
Whitehall Twp Authority 13,063 369 Detected
Salisbury Twp Water System 8,522 13 Detected
Lv Hospital Cedar Crest 8,425 5 -
Upper Saucon Twp Water Supply 7,300 620 Detected
Catasauqua Mun Water Works 6,598 121 Detected
Slatington Borough Water Sys 4,450 112 Clean
Macungie Borough Authority 3,039 17 -
Lca North Whitehall Division 2,910 31 Detected
Coopersburg Mun Water Auth 2,570 203 -
Lehigh Carbon Community Colleg 2,500 255 -
Lehigh Career & Technical Inst 2,400 129 -
Alburtis Borough Authority 2,117 50 -
Desales University 2,000 54 -
Green Acres Mhc 1,475 88 -
Lca Arcadia West Division 1,392 56 -
Swt Allentown Cons System 1,300 49 -
Lca Emmaus Consecutive Div 1,046 0 -
Lca Washington Township Div 965 120 -
Nwlsd High School 821 130 -
Kernsville Elementary School 750 31 -
Nwlsd Middle School 681 113 -
Aqua PA Springhouse Farms 645 129 -
Nestle Purina Petcare Co 640 69 -
Kidspeace - Orchard Hills Camp 640 16 -
Lil Wolf MHP 600 63 -
Nwlsd Elementary School 582 48 -
Glencrest Mobile Home Park 570 134 -
Hanover Township Lehigh County 520 59 -
Lca Heidelberg Heights Div 509 414 -
Lehigh Cc Club House System 500 23 -
Ken-Man Water Co 475 1,377 -
Hometown Breakfast Bar & Grill 450 10 -
Peters Elementary School 426 238 -
Big Woodys 400 21 -
Shankweilers Drive in Theater 400 62 -
Yoccos South 400 13 -
Riverview Estates 375 169 -
Jordan United Church of Christ 350 20 -
Allentown Lehigh Valley KOA 340 56 -
Milford Bible Camp 300 22 -
St Pauls Ucc of Trexlertown 300 76 -
Lca Madison North Division 290 5 -
Aqua PA Country Club Gardens 268 48 -
Lca Upper Milford Central Div 256 29 -
Trivet Family Restaurant I 250 26 -
Lehigh Valley Zoo 250 23 -

Compare beyond Pennsylvania

Mid-flagged peers for Lehigh County

Cross-state counties nearest Lehigh County on flagged-system share (96.5%) and cumulative violation count (15,405). 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.