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Community Water System · PWS NH1742010

Cary and Allen St Dev

Bow, New Hampshire 03304 - drinking water served from groundwater sources to 43 people, tracked in EPA SDWIS and UCMR5.

43
People served
287
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 287 drinking-water violations at Cary and Allen St Dev, 1% of them health-based - above the New Hampshire per-system average.

287
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
43
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cary and Allen St Dev

Cary and Allen St Dev is a private-owned community water system that delivers drinking water to 43 residents in Bow, New Hampshire (Sullivan County) through 17 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 287 total violations for this system , of which 4 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 265 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is DICHLOROMETHANE, recorded in 12 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across New Hampshire, EPA tracks 2,453 public water systems serving 1,242,123 people, with 155,970 cumulative violations and 29,649 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 63.6 violations. Statewide, 18 of 51 UCMR5-tested systems have reported PFAS detections (35.3%).

Cary and Allen St Dev's 287 violations sit above the New Hampshire 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
43
Total Violations
287
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
17
County
Sullivan
School/Daycare
No
MCL Violations
0
Monitoring Violations
265
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
DICHLOROMETHANE MR 12 1994
o-Dichlorobenzene MR 12 1994
p-Dichlorobenzene MR 12 1994
Vinyl chloride MR 12 1994
1,1-Dichloroethylene MR 12 1994
Carbon tetrachloride MR 12 1994
1,2-Dichloropropane MR 12 1994
Trichloroethylene MR 12 1994
1,1,2-Trichloroethane MR 12 1994
CHLOROBENZENE MR 12 1994
Toluene MR 12 1994
Ethylbenzene MR 12 1994
Styrene MR 12 1994
1,2,4-Trichlorobenzene MR 12 1994
cis-1,2-Dichloroethylene MR 12 1994
Xylenes, Total MR 12 1994
trans-1,2-Dichloroethylene MR 12 1994
1,2-Dichloroethane MR 12 1994
Tetrachloroethylene MR 12 1994
Benzene MR 12 1994
1,1,1-Trichloroethane MR 12 1994
Consumer Confidence Rule Other 10 2017
Nitrate MR 6 1994
Groundwater Rule TT 4 2011
Revised Total Coliform Rule RPT 4 2023
Revised Total Coliform Rule MON 4 2023
Lead and Copper Rule MR 3 2000

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 Cary and Allen St Dev.

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 NH1742010 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Hampshire Drinking Water Authority

New Hampshire'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 NH 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
2023 Revised Total Coliform Rule RPT 4 SDWIS / NH1742010 / 8000
2023 Revised Total Coliform Rule MON 4 SDWIS / NH1742010 / 8000
2017 Consumer Confidence Rule Other 10 SDWIS / NH1742010 / 7000
2011 Groundwater Rule TT 4 SDWIS / NH1742010 / 0700
2000 Lead and Copper Rule MR 3 SDWIS / NH1742010 / 5000
1994 DICHLOROMETHANE MR 12 SDWIS / NH1742010 / 2964
1994 o-Dichlorobenzene MR 12 SDWIS / NH1742010 / 2968
1994 p-Dichlorobenzene MR 12 SDWIS / NH1742010 / 2969
1994 Vinyl chloride MR 12 SDWIS / NH1742010 / 2976
1994 1,1-Dichloroethylene MR 12 SDWIS / NH1742010 / 2977
1994 Carbon tetrachloride MR 12 SDWIS / NH1742010 / 2982
1994 1,2-Dichloropropane MR 12 SDWIS / NH1742010 / 2983
1994 Trichloroethylene MR 12 SDWIS / NH1742010 / 2984
1994 1,1,2-Trichloroethane MR 12 SDWIS / NH1742010 / 2985
1994 CHLOROBENZENE MR 12 SDWIS / NH1742010 / 2989

How Cary and Allen St Dev Compares

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

Metric Cary and Allen St Dev New Hampshire avg Federal benchmark
Total violations 287 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 12.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 35.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 43 506 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,453 regulated public water systems in New Hampshire.

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 Cary and Allen St Dev water safe to drink? ▼
Cary and Allen St Dev (PWS ID: NH1742010) has 287 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 43 people using Groundwater sources.
How many people does Cary and Allen St Dev serve? ▼
Cary and Allen St Dev serves 43 people in Bow, New Hampshire. It is a Private-owned system using Groundwater water sources with 17 service connections.
What type of violations does Cary and Allen St Dev have? ▼
Cary and Allen St Dev has 287 total violations: 4 health-based violations (MCL exceedances or treatment failures), 265 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cary and Allen St Dev water? ▼
No PFAS testing data is available for Cary and Allen St Dev under the EPA's UCMR5 monitoring program.
What water source does Cary and Allen St Dev use? ▼
Cary and Allen St Dev 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.