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Community Water System · PWS CT1330021

Sprague Water & Sewer Authority

Baltic, Connecticut 06330 - drinking water served from groundwater sources to 1,058 people, tracked in EPA SDWIS and UCMR5.

1,058
People served
192
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 192 drinking-water violations at Sprague Water & Sewer Authority - above the Connecticut per-system average.

192
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
1,058
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sprague Water & Sewer Authority

Sprague Water & Sewer Authority is a local-owned community water system that delivers drinking water to 1,058 residents in Baltic, Connecticut (New London County) through 250 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 192 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 178 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 8 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Connecticut, EPA tracks 2,332 public water systems serving 2,886,005 people, with 206,662 cumulative violations and 21,779 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 88.6 violations. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%).

Sprague Water & Sewer Authority's 192 violations sit above the Connecticut average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,058
Total Violations
192
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
250
County
New London
School/Daycare
No
MCL Violations
0
Monitoring Violations
178
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 8 2025
Nitrate-Nitrite MR 6 1993
Methoxychlor MR 4 2008
Dalapon MR 4 2008
Glyphosate MR 4 2008
Di(2-ethylhexyl) adipate MR 4 2008
Simazine MR 4 2008
Picloram MR 4 2008
Dinoseb MR 4 2008
Hexachlorocyclopentadiene MR 4 2008
Aldicarb sulfoxide MR 4 2008
Aldicarb sulfone MR 4 2008
Heptachlor MR 4 2008
2,4-D MR 4 2008
Benzo(a)pyrene MR 4 2008
Total Polychlorinated Biphenyls (PCB) MR 4 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2008
ETHYLENE DIBROMIDE MR 4 2008
Chlordane MR 4 2008
Combined Radium (-226 and -228) MR 4 2008
E. COLI MR 4 2018
Carbofuran MR 4 2008
Diquat MR 4 2008
Toxaphene MR 4 2008
Pentachlorophenol MR 4 2008
Atrazine MR 4 2008
Endrin MR 4 2008
OXAMYL MR 4 2008
BHC-GAMMA MR 4 2008
HEXACHLOROBENZENE MR 4 2008

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Sprague Water & Sewer Authority.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CT1330021 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Connecticut Drinking Water Authority

Connecticut's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find CT regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Consumer Confidence Rule Other 8 SDWIS / CT1330021 / 7000
2024 Lead and Copper Rule MR 2 SDWIS / CT1330021 / 5000
2018 E. COLI MR 4 SDWIS / CT1330021 / 3014
2008 Methoxychlor MR 4 SDWIS / CT1330021 / 2015
2008 Dalapon MR 4 SDWIS / CT1330021 / 2031
2008 Glyphosate MR 4 SDWIS / CT1330021 / 2034
2008 Di(2-ethylhexyl) adipate MR 4 SDWIS / CT1330021 / 2035
2008 Simazine MR 4 SDWIS / CT1330021 / 2037
2008 Picloram MR 4 SDWIS / CT1330021 / 2040
2008 Dinoseb MR 4 SDWIS / CT1330021 / 2041
2008 Hexachlorocyclopentadiene MR 4 SDWIS / CT1330021 / 2042
2008 Aldicarb sulfoxide MR 4 SDWIS / CT1330021 / 2043
2008 Aldicarb sulfone MR 4 SDWIS / CT1330021 / 2044
2008 Heptachlor MR 4 SDWIS / CT1330021 / 2065
2008 2,4-D MR 4 SDWIS / CT1330021 / 2105

How Sprague Water & Sewer Authority Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Sprague Water & Sewer Authority Connecticut avg Federal benchmark
Total violations 192 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 9.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 63.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,058 1,238 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,332 regulated public water systems in Connecticut.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Sprague Water & Sewer Authority water safe to drink? ▼
Sprague Water & Sewer Authority (PWS ID: CT1330021) has 192 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,058 people using Groundwater sources.
How many people does Sprague Water & Sewer Authority serve? ▼
Sprague Water & Sewer Authority serves 1,058 people in Baltic, Connecticut. It is a Local-owned system using Groundwater water sources with 250 service connections.
What type of violations does Sprague Water & Sewer Authority have? ▼
Sprague Water & Sewer Authority has 192 total violations: 0 health-based violations (MCL exceedances or treatment failures), 178 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sprague Water & Sewer Authority water? ▼
No PFAS testing data is available for Sprague Water & Sewer Authority under the EPA's UCMR5 monitoring program.
What water source does Sprague Water & Sewer Authority use? ▼
Sprague Water & Sewer Authority uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - 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 Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from 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.