Is Temple Shalom water safe to drink?

Temple Shalom (PWS ID: CT1030074) has 189 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 100 people using Groundwater sources.

How many people does Temple Shalom serve?

EPA SDWIS reports that Temple Shalom serves 100 people (this public water system's service population, not the municipal population of Norwalk or any other city). It is a Private-owned system using Groundwater water sources with 1 service connections. The operator address is listed in Norwalk, Connecticut.

What type of violations does Temple Shalom have?

Temple Shalom has 189 total violations: 23 health-based violations (MCL exceedances or treatment failures), 153 monitoring/reporting violations, and 22 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Temple Shalom water?

No PFAS testing data is available for Temple Shalom under the EPA's UCMR5 monitoring program.

What water source does Temple Shalom use?

Temple Shalom uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

Where does this data come from?

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.

How does Temple Shalom's violation count compare nationally?

Temple Shalom has 189 recorded EPA SDWIS violations, fewer than 15% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 84% of that cohort has fewer violations than Temple Shalom. 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.

States → Connecticut

Non-Transient Non-Community Water System · PWS CT1030074

Temple Shalom

Operator location Norwalk, Connecticut - smaller served population (≤ 999) at 100 people served; 189 SDWIS violations on record from groundwater sources.

Compiled by PlainWater · May 15, 2026

100
People served (this PWS) Smaller third of systems: 189
EPA violations (this PWS) Upper third of systems: 23
Health-based (this PWS) Middle third by health-based share: Untested
UCMR5 (this PWS) No UCMR5 result

Follow published updates (RSS)

Temple Shalom standing, high SDWIS violation third

100 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 12% is middle-third health share (≤ 23%).

The verdict

Temple Shalom sits in the upper third of the sitemap cohort by violation count (189), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (100; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 12% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

189
Total EPA violations on record: 12%
Health-based (MCL / treatment failure): 100
People served by this PWS (SDWIS): N/A
PFAS compounds detected (UCMR5)

Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.

Water Safety Score

9/100

Temple Shalom

Based on EPA SDWIS violation history and UCMR5 PFAS testing only, not water taste, odor, infrastructure age, or contaminants outside the federally tracked set.

Health-based violations F

EPA SDWIS health-based violations on record (MCL, MRDL, treatment technique)

Monitoring & reporting violations F

166

Non-health SDWIS violations (monitoring, reporting, and other compliance)

PFAS contamination N/A

Not UCMR5-tested

Highest PFAS compound level detected in UCMR5 testing

System Details

System Type: Non-Transient Non-Community
Owner Type: Private
Connections: 1
County: Fairfield
School/Daycare: No
MCL Violations: 1
Monitoring Violations: 153
Treatment Tech Violations: 22

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Lead and Copper Rule	MR	61	2024
Lead and Copper Rule	TT	18	2024
Coliform (TCR)	MR	10	2008
E. COLI	MR	8	2016
Total Polychlorinated Biphenyls (PCB)	MR	6	2023
Nitrate	MR	4	2002
Nitrite	MR	4	2002
Public Notice	Other	4	2018
Revised Total Coliform Rule	RPT	4	2018
Revised Total Coliform Rule	TT	3	2023
Toxaphene	MR	2	2004
Aldicarb sulfoxide	MR	2	2004
Aldicarb	MR	2	2004
Atrazine	MR	2	2004
LASSO	MR	2	2004
Pentachlorophenol	MR	2	2004
ETHYLENE DIBROMIDE	MR	2	2004
Endrin	MR	2	2004
Dalapon	MR	2	2004
Diquat	MR	2	2004
Glyphosate	MR	2	2004
Di(2-ethylhexyl) adipate	MR	2	2004
Simazine	MR	2	2004
Di(2-ethylhexyl) phthalate	MR	2	2004
Dinoseb	MR	2	2004
Hexachlorocyclopentadiene	MR	2	2004
Benzo(a)pyrene	MR	2	2004
Heptachlor epoxide	MR	2	2004
Carbofuran	MR	2	2004
Heptachlor	MR	2	2004

Violation Count vs. the National Corpus

Temple Shalom has 189 recorded EPA violations, 84% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 15% carry more. 12% of this system's own violations are health-based (23 of 189), and it ranks unranked by population served among that same cohort.

EPA violations vs. the national water-system corpus

Public water systems serving 500+ people (EPA SDWIS)

189 Higher than most more violations than 84% of 29,740 water systems

the national water-system corpus, bucketed by value

Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source EPA SDWIS · 2026-05-15

How many violations vs. how serious, among peer systems

Temple Shalom plotted against 29 peer public water systems (500+ people served), by total violation count (x) and the share of those violations that are health-based (y). The crosshair sits at this sample's own median on each axis. A high violation count does not automatically mean a serious record: most monitoring and reporting violations are minor, not health-based.

30 public water systems (500+ people served), EPA SDWIS current release.

How to read this

Each dot is one public water system; the highlighted dot is Temple Shalom. A system to the right has more recorded violations; a system higher up has a larger share of those violations classified health-based rather than monitoring or reporting.

Rare but serious: few violations, but most of them are health-based.
Frequent, mostly paperwork: many violations, but mostly monitoring or reporting, not health-based.
Clean record: below-median on both counts, the tinted corner.

View all 30 systems as a list

City of Ballinger: 372 violations, 85% health-based
Nooksack Valley Water Association: 16 violations, 31% health-based
Montgomery Co RWD 12: 7 violations, 29% health-based
Irvin Water District #6: 11 violations, 27% health-based
Ticonderoga WD: 47 violations, 26% health-based
Pine Valley Plantation: 37 violations, 24% health-based
McLouth, City Of: 29 violations, 17% health-based
Kipling Oaks 1: 25 violations, 16% health-based
South Deerfield Water Supply District: 96 violations, 16% health-based
Sunset Ridge Water District: 82 violations, 15% health-based
Orange Water Dept: 136 violations, 14% health-based
Temple Shalom: 189 violations, 12% health-based (this system)
Mount Pleasant Water Sys #1: 167 violations, 11% health-based
Lake Gibson Estates: 42 violations, 2% health-based
Benson Culinary Improvement District: 212 violations, 1% health-based
Conemaugh Twp Muni Auth: 567 violations, 1% health-based
Miccosukee Service Plaza: 0 violations, 0% health-based
Brazoria - Fort Bend Counties MUD 3: 0 violations, 0% health-based
Tanglewilde Thompson Place 600: 2 violations, 0% health-based
Center Water Co: 5 violations, 0% health-based
Spring Mills Elem School/Hvs: 9 violations, 0% health-based
Great Bend Industrial Park: 14 violations, 0% health-based
Glen Park Village: 19 violations, 0% health-based
Camp Is-Sho-Da: 22 violations, 0% health-based
Hamilton: 33 violations, 0% health-based
Town of Welaka: 54 violations, 0% health-based
Township of Blairstown Dpw: 61 violations, 0% health-based
McIntosh Water & Fire Pro Authority: 71 violations, 0% health-based
Clarkdale Municipal Water System: 114 violations, 0% health-based
Eureka Water Association: 273 violations, 0% health-based

Population served record for Temple Shalom

EPA SDWIS lists 100 people served and 1 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.

EPA SDWIS · PWS CT1030074

Sources: EPA SDWIS

Nationwide peers

189 violations · 100 served: nearest cross-state SDWIS matches.

Cross-state systems with comparable violation load

Nearest cross-state community systems (500+ served) by total SDWIS violations on record.

4 peers

What to do with Temple Shalom

Use this system's EPA-reported record as a starting filter, not a final verdict.

See how every tracked system in Connecticut compares on the same EPA violation measures. Connecticut systems
Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
Find and compare another public water system by name or PWSID. Search systems

EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.

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. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.