How many water violations are in York County?

York County has 12,163 total drinking water violations across 190 water systems, of which 1,564 are health-based violations. 91.6% of systems have at least one violation.

How many people get water from York County systems?

Water systems in York County serve approximately 164,445 people through 190 public water systems.

Has PFAS been detected in York County water?

Under EPA UCMR5, 2 of 9 tested systems in York County had at least one PFAS detection (22.2% of the UCMR5-tested subset - not of all 190 SDWIS systems).

What types of water sources supply York County?

Water systems in York County use GW (183 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. 12.9% of York County's violations are health-based. Among counties with any SDWIS violations, this extract puts York County in the middle health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does York County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, York County ranks #390 of 3,254 counties by people served, and #2 of 16 counties in Maine. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Maine

York County, Maine

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet ME031 · York County 190 sys · 12,163 viol · #390/3254

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

VIOL-SEVERE 91.6% flagged
HEALTH-LOW 12.9% health
RANK-TOP #390/3254
PHOTO-FINISH ±0.1 pp
PFAS-LOW 22.2% detect
SRC-GW GW lead 96%
SYS-LARGE 190 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Knox County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, York County ranks #390 of 3,254 counties by people served, and #2 of 16 counties in Maine. See methodology · corpus placement.

York County standing, lower-flagged corpus third

Flagged-system rate 91.6% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 12.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 22.2% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #390 of 3,254 · #2 of 16 in Maine.

Water Systems

System Name	Population	Violations	PFAS
Maine Water Company Biddeford Saco Div	42,508	39	Clean
Kennebunk, Kennebunkport & Wells WD	35,663	33	Clean
Kittery Water District	14,478	44	Clean
Sanford Water District	14,328	45	Detected
York Water District	13,675	20	Clean
South Berwick Water District	3,722	54	Clean
Lake Arrowhead Community Inc	3,500	47	Clean
Berwick Water Department	2,470	166	-
North Berwick Water District	1,825	131	-
Maine Water Company Kezar Falls Division	1,045	15	-
Msad 06 Bonny Eagle Middle School	800	43	Detected
Alfred Water District	783	132	-
Rsu 35 Marshwood High School	760	35	-
Cornish Water District	753	15	-
Sea-Vu South Campground	688	16	-
Sea-Vu West Campground	660	20	-
Msad 06 Buxton Center Elementary School	650	1	-
Limerick Water District	625	86	-
Salmon Falls Resort & Golf Club LLC	534	14	-
Rsu 35 Marshwood Middle School	530	37	-
Yankeeland RV Resort	525	25	-
Msad 60 Noble Middle School	500	19	-
Salmon Falls River Camping Resort	500	82	-
Town Line Family Restaurant	475	191	-
Waterboro Water District	470	127	-
Keywood Manor MHP LLC	411	24	-
Ecj/Bluetriton Brands	406	17	-
Mousam River Campground	388	20	-
Apache Campground	375	32	-
Sanford Country Club	360	82	-
Msad 06 Hollis Consolidated School	350	49	-
Red Apple Campground	350	57	-
Apple Valley Campground	350	16	-
Rsu 57 Line Elementary School	340	13	-
Huttopia Sand Pond LLC	328	19	-
Yellowstone Park	328	13	-
Rsu 57 Lyman Elementary School	325	24	-
Old Marsh Condominium	325	230	-
Pinederosa Campground	322	5	-
Coastal Woods Campground	312	80	-
Hidden Pond LLC	308	16	-
Mildred L Day School - Arundel	300	43	-
Spring Hill Inc	300	86	-
Highpine Village	300	16	-
Iron Tails Saloon	300	144	-
Bears Den RV Park - West	290	31	-
Acton Elementary School	275	141	-
Hannas Tavern	270	358	-
Colonial Mobile Home Park	270	13	-
Msad 60 Knowlton School	270	71	-

Compare beyond Maine

Lower-flagged peers for York County

Cross-state counties nearest York County on flagged-system share (91.6%) and cumulative violation count (12,163). 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

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

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.