How many water violations are in Washington County?

Washington County has 12,743 total drinking water violations across 188 water systems, of which 3,300 are health-based violations. 94.7% of systems have at least one violation.

How many people get water from Washington County systems?

Water systems in Washington County serve approximately 192,066 people through 188 public water systems.

Has PFAS been detected in Washington County water?

Under EPA UCMR5, 7 of 10 tested systems in Washington County had at least one PFAS detection (70.0% of the UCMR5-tested subset - not of all 188 SDWIS systems).

What types of water sources supply Washington County?

Water systems in Washington County use GW (187 systems), SW (1 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. 25.9% of Washington County's violations are health-based. Among counties with any SDWIS violations, this extract puts Washington County in the higher health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Counties → Rhode Island

Washington County, Rhode Island

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet RI009 · Washington County 188 sys · 12,743 viol · #347/3254

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

VIOL-SEVERE 94.7% flagged
HEALTH-MID 25.9% health
RANK-TOP #347/3254
ABOVE-PEER +1.1 pp
PFAS-HIGH 70.0% detect
SRC-GW GW lead 99%
SYS-LARGE 188 systems
BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Washington County ranks #347 of 3,254 counties by people served, and #2 of 5 counties in Rhode Island. See methodology · corpus placement.

Washington County standing, mid-flagged corpus third

Flagged-system rate 94.7% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 25.9% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 70.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #347 of 3,254 · #2 of 5 in Rhode Island.

Water Systems

System Name	Population	Violations	PFAS
Westerly Water Department	35,298	344	Detected
North Kingstown Town Of	27,732	321	Detected
Veolia Water Wakefield Rhode Island Inc	22,347	86	Clean
University of Rhode Island	19,354	198	Detected
Quonset Business Park	13,000	259	Detected
Block Island Water Company	9,999	378	Clean
Narragansett Water System-Point Judith	8,210	115	Clean
South Kingstown-South Shore	6,170	108	Detected
Narragansett Water Dept-North End	4,432	130	Detected
Kingston Water District	3,968	317	Detected
Burlingame Reservation-Main Camp-Legiont	3,024	88	-
Richmond, Town Of	2,671	145	-
Rhode Island Welcome Center	2,000	11	-
Chariho Regional Middle School	1,500	10	-
Chariho Regional High School	1,300	27	-
Yawgoog Scout Reservation	1,200	54	-
Harborside Inn, Inc.	1,000	24	-
Tds Realty Holdings - An0	1,000	36	-
Wawaloam RV LLC Dba Wawaloam Campground	750	91	-
South Kingstown-Middlebridge	694	38	-
Metcalf Elementary School	687	27	-
Whispering Pines Campground	600	24	-
Ashaway Pines RV Resort LLC	520	15	-
Downey Weaver Post #34 American Legion	500	5	-
Allies Donuts, Inc.	500	59	-
Corner Deli, The	500	34	-
Central Beach Fire District	470	146	-
Spring House Hotel -Island Entertainment	450	25	-
Frontier Camper Park Inc	438	60	-
Block Island Airport Operations	400	47	-
Pinecrest Golf Course, Inc.	400	5	-
Long Cove Marina & Campground	375	19	-
Charlestown Elementary School	350	18	-
Meadow Brook Inn, Ltd.	350	35	-
Burlingame Park-Prosser Beach-Picnic An0	305	21	-
YMCA Camp Fuller	305	224	-
Shady Harbor Fire District	300	12	-
Quonochontaug East Beach Water Associati	300	360	-
Ashaway Elementary School	300	17	-
Charlestown Rathskeller Tavern Inc.	300	16	-
Holly Tree Camper Park, Inc.	300	20	-
Champlins Marina & Resorts, Inc.	300	74	-
Exeter Chapel	300	17	-
Shadow Woods at Deer Brook	300	120	-
Chariho Southern Baptist Church	300	35	-
Exeter Job Corps Center	300	53	-
Castle Rock Condominiums	292	48	-
Wawaloam School	290	10	-
Oak Harbor Village, LLC.	290	31	-
Kingston Hill Academy	285	5	-

Compare beyond Rhode Island

Mid-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (94.7%) and cumulative violation count (12,743). 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.