Question 1

Is Williamsburg Water Dept water safe to drink?

Accepted Answer

Williamsburg Water Dept (PWS ID: MA1340000) has 97 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 1,575 people using Groundwater sources.

Question 2

How many people does Williamsburg Water Dept serve?

Accepted Answer

EPA SDWIS reports that Williamsburg Water Dept serves 1,575 people (this public water system's service population, not the municipal population of Haydenville or any other city). It is a Local-owned system using Groundwater water sources with 571 service connections. The operator address is listed in Haydenville, Massachusetts.

Question 3

What type of violations does Williamsburg Water Dept have?

Accepted Answer

Williamsburg Water Dept has 97 total violations: 15 health-based violations (MCL exceedances or treatment failures), 51 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Williamsburg Water Dept water?

Accepted Answer

No PFAS testing data is available for Williamsburg Water Dept under the EPA's UCMR5 monitoring program.

Question 5

What water source does Williamsburg Water Dept use?

Accepted Answer

Williamsburg Water Dept uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

Where does Williamsburg Water Dept sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Williamsburg Water Dept ranks #15,505 of 29,740 by people served, and #303 of 418 in Massachusetts. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Williamsburg Water Dept's violation count compare nationally?

Accepted Answer

Williamsburg Water Dept has 97 recorded EPA SDWIS violations, fewer than 27% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 73% of that cohort has fewer violations than Williamsburg Water Dept. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	15	2015
Revised Total Coliform Rule	MON	8	2019
Coliform (TCR)	MR	4	2015
Nitrate	MR	4	2006
Radium-226	MR	3	2015
Radium-228	MR	3	2015
Gross Beta Particle Activity	MR	2	2001
38-STRONTIUM-90	MR	2	2001
Coliform (TCR)	Other	2	2018
Tritium	MR	2	2001
1,2,4-Trichlorobenzene	MR	1	2001
cis-1,2-Dichloroethylene	MR	1	2001
DICHLOROMETHANE	MR	1	2001
o-Dichlorobenzene	MR	1	2001
Vinyl chloride	MR	1	2001
1,1-Dichloroethylene	MR	1	2001
trans-1,2-Dichloroethylene	MR	1	2001
1,1,1-Trichloroethane	MR	1	2001
Carbon tetrachloride	MR	1	2001
Trichloroethylene	MR	1	2001
Tetrachloroethylene	MR	1	2001
CHLOROBENZENE	MR	1	2001
Toluene	MR	1	2001
Styrene	MR	1	2001
p-Dichlorobenzene	MR	1	2001
Gross Alpha, Excl. Radon and U	MR	1	2015
1,2-Dichloroethane	MR	1	2001
1,2-Dichloropropane	MR	1	2001
Lead and Copper Rule	MR	1	2008
1,1,2-Trichloroethane	MR	1	2001

Williamsburg Water Dept

Williamsburg Water Dept standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

SDWIS compliance record for Williamsburg Water Dept

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems near this population served