PlainWater
Counties → Pennsylvania

Dauphin County, Pennsylvania

Water Systems
145
Population Served
294,232
Total Violations
21,033
991 health-based
PFAS Detected
5
of 7 tested

Violation Analysis

98.6%
Systems with Violations
145.1
Avg Violations per System
4.7%
Health-Based Violations

Water Source Types

GW
43 systems (30%)
SW
7 systems (5%)

PFAS Contamination

7
Systems Tested
5
PFAS Detected
71.4%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Dauphin Pennsylvania water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (50)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Veolia Water 110,000 136 Detected
Capital Region Water 66,540 145 Clean
PA Amer Water Co 50,200 15 Detected
Veolia Middletown 9,600 341 Detected
PA American Water Steelton 6,428 226 Clean
Penn National Gaming 6,000 102 Clean
Millersburg Water Auth 4,600 221 Detected
Lykens Boro Auth 3,220 632 -
Elizabethville Area Auth 2,700 227 -
Williamstown Boro Auth 2,390 325 -
Halifax Area Water & Sewer Aut 2,278 167 -
Rutters Farm Store 77 1,600 212 -
Harrisburg Intl Airport 1,500 268 -
Rutters Farm Store #20 1,200 16 -
Sheetz 461 1,100 87 -
Royalton Boro 1,083 53 -
Grantville MHP 1,040 745 -
PA DOT Site 47 Mod Rest Area 1,000 104 -
PA DOT Site 48 Mod Rest Area 1,000 32 -
Pilot Travel Ctr No 517 980 98 -
Sheetz Grantville 900 6 -
Thermo Fisher Scientific 800 30 -
Upper Dauphin Middle Sch 779 119 -
Gratz Boro Water Revenue Fund 738 356 -
Mainstay Suites 700 40 -
Middletown Anglers & Hunters 600 72 -
Holiday Inn Grantville 500 441 -
Funcks Exxon 500 39 -
Londonderry Elem Sch 465 373 -
Harrisburg Christian Sch 450 172 -
East Hanover Elem Sch 440 176 -
Cedar Manor MHP 432 1,357 -
Oak Knoll Est MHP 350 491 -
Pillow Boro Auth 312 191 -
Pine Manor MHP 302 202 -
Lykens Valley Golf Course 300 26 -
Sunset Gc 300 65 -
Red Rabbit Drive IN 300 53 -
Tmi Plt Drinking Water Sys 300 17 -
Northern Dauphin Co YMCA 300 70 -
Halifax Village 272 1,131 -
Devonshire Mem United Breth Ch 260 80 -
Conewago Twp Elem Sch 250 166 -
Hampton Inn 240 50 -
Crestview Village MHP 223 426 -
Camp Small Valley Hemlock Gsc 220 69 -
St Johns Luth Ch 200 164 -
Holiday Inn Express 200 21 -
Kingdom Hall Jehovahs Witness 200 42 -
Yellow Breeches Ed Center 200 71 -

Other Counties in Pennsylvania

Allegheny County
69 systems · 2,014,752 served · 5,241 violations
Philadelphia County
6 systems · 1,601,175 served · 447 violations
Montgomery County
172 systems · 1,274,688 served · 36,032 violations
Bucks County
299 systems · 599,107 served · 59,577 violations
Lancaster County
434 systems · 406,457 served · 39,193 violations
York County
208 systems · 389,602 served · 25,528 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Dauphin County? ▼
Dauphin County has 21,033 total drinking water violations across 145 water systems, of which 991 are health-based violations. 98.6% of systems have at least one violation.
How many people get water from Dauphin County systems? ▼
Water systems in Dauphin County serve approximately 294,232 people through 145 public water systems.
Has PFAS been detected in Dauphin County water? ▼
Of 7 water systems tested for PFAS in Dauphin County, 5 had PFAS detected (71.4% detection rate).
What types of water sources supply Dauphin County? ▼
Water systems in Dauphin County use GW (43 systems), SW (7 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 4.7% of Dauphin County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.