Question 1

Is Ctwc - Thompson System water safe to drink?

Accepted Answer

Ctwc - Thompson System (PWS ID: CT1410011) has 77 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 1,070 people using Groundwater sources.

Question 2

How many people does Ctwc - Thompson System serve?

Accepted Answer

EPA SDWIS reports that Ctwc - Thompson System serves 1,070 people (this public water system's service population, not the municipal population of Clinton or any other city). It is a Private-owned system using Groundwater water sources with 471 service connections. The operator address is listed in Clinton, Connecticut.

Question 3

What type of violations does Ctwc - Thompson System have?

Accepted Answer

Ctwc - Thompson System has 77 total violations: 4 health-based violations (MCL exceedances or treatment failures), 64 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 Ctwc - Thompson System water?

Accepted Answer

No PFAS testing data is available for Ctwc - Thompson System under the EPA's UCMR5 monitoring program.

Question 5

What water source does Ctwc - Thompson System use?

Accepted Answer

Ctwc - Thompson System 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 Ctwc - Thompson System sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Ctwc - Thompson System ranks #18,842 of 29,740 by people served, and #99 of 184 in Connecticut. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Ctwc - Thompson System's violation count compare nationally?

Accepted Answer

Ctwc - Thompson System has 77 recorded EPA SDWIS violations, fewer than 32% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 67% of that cohort has fewer violations than Ctwc - Thompson System. 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	4	1995
Total Polychlorinated Biphenyls (PCB)	MR	4	2015
BHC-GAMMA	MR	2	2015
Diquat	MR	2	2015
Glyphosate	MR	2	2015
Di(2-ethylhexyl) adipate	MR	2	2015
OXAMYL	MR	2	2015
Di(2-ethylhexyl) phthalate	MR	2	2015
Picloram	MR	2	2015
Aldicarb sulfoxide	MR	2	2015
Aldicarb sulfone	MR	2	2015
Carbofuran	MR	2	2015
Aldicarb	MR	2	2015
Heptachlor	MR	2	2015
Heptachlor epoxide	MR	2	2015
2,4-D	MR	2	2015
2,4,5-TP	MR	2	2015
HEXACHLOROBENZENE	MR	2	2015
Benzo(a)pyrene	MR	2	2015
1,2-DIBROMO-3-CHLOROPROPANE	MR	2	2015
ETHYLENE DIBROMIDE	MR	2	2015
Chlordane	MR	2	2015
Hexachlorocyclopentadiene	MR	2	2015
Endrin	MR	2	2015
Atrazine	MR	2	2015
Toxaphene	MR	2	2015
Dalapon	MR	2	2015
LASSO	MR	2	2015
Pentachlorophenol	MR	2	2015
Methoxychlor	MR	2	2015

Ctwc - Thompson System

Ctwc - Thompson System standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

SDWIS compliance record for Ctwc - Thompson System

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems near this population served