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Community Water System · PWS NH0382010

Rosebrook Water

Monroe, New Hampshire 06408 - drinking water served from groundwater sources to 1,050 people, tracked in EPA SDWIS and UCMR5.

1,050
People served
172
EPA violations
52
Health-based
Untested
UCMR5 result

The verdict

EPA records 172 drinking-water violations at Rosebrook Water, 30% of them health-based - above the New Hampshire per-system average.

172
Total EPA violations on record
30%
Health-based (MCL / treatment failure)
1,050
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Rosebrook Water

Rosebrook Water is a private-owned community water system that delivers drinking water to 1,050 residents in Monroe, New Hampshire (Coos County) through 415 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 172 total violations for this system , of which 52 (30%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 110 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 45 violations (MCL, health-based). 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, 23 of 51 UCMR5-tested systems have reported PFAS detections (45.1%).

Rosebrook Water's 172 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
1,050
Total Violations
172
Health-Based Violations
52
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
415
County
Coos
School/Daycare
No
MCL Violations
45
Monitoring Violations
110
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 45 1998
Lead and Copper Rule MR 10 2022
Coliform (TCR) MR 8 1991
1,2,4-Trichlorobenzene MR 4 2006
Xylenes, Total MR 4 2006
DICHLOROMETHANE MR 4 2006
o-Dichlorobenzene MR 4 2006
Vinyl chloride MR 4 2006
1,1-Dichloroethylene MR 4 2006
1,2-Dichloropropane MR 4 2006
Trichloroethylene MR 4 2006
Tetrachloroethylene MR 4 2006
CHLOROBENZENE MR 4 2006
Benzene MR 4 2006
Ethylbenzene MR 4 2006
Styrene MR 4 2006
cis-1,2-Dichloroethylene MR 4 2006
Carbon tetrachloride MR 4 2006
Toluene MR 4 2006
Lead and Copper Rule TT 4 2021
trans-1,2-Dichloroethylene MR 4 2006
1,1,2-Trichloroethane MR 4 2006
1,2-Dichloroethane MR 4 2006
Nitrate MR 4 2006
1,1,1-Trichloroethane MR 4 2006
p-Dichlorobenzene MR 4 2006
Groundwater Rule TT 3 2020
Total Haloacetic Acids (HAA5) MR 2 2021
TTHM MR 2 2021
Public Notice Other 2 2021

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 Rosebrook Water.

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 NH0382010 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
2022 Lead and Copper Rule MR 10 SDWIS / NH0382010 / 5000
2021 Lead and Copper Rule TT 4 SDWIS / NH0382010 / 5000
2021 Total Haloacetic Acids (HAA5) MR 2 SDWIS / NH0382010 / 2456
2021 TTHM MR 2 SDWIS / NH0382010 / 2950
2021 Public Notice Other 2 SDWIS / NH0382010 / 7500
2020 Groundwater Rule TT 3 SDWIS / NH0382010 / 0700
2006 1,2,4-Trichlorobenzene MR 4 SDWIS / NH0382010 / 2378
2006 Xylenes, Total MR 4 SDWIS / NH0382010 / 2955
2006 DICHLOROMETHANE MR 4 SDWIS / NH0382010 / 2964
2006 o-Dichlorobenzene MR 4 SDWIS / NH0382010 / 2968
2006 Vinyl chloride MR 4 SDWIS / NH0382010 / 2976
2006 1,1-Dichloroethylene MR 4 SDWIS / NH0382010 / 2977
2006 1,2-Dichloropropane MR 4 SDWIS / NH0382010 / 2983
2006 Trichloroethylene MR 4 SDWIS / NH0382010 / 2984
2006 Tetrachloroethylene MR 4 SDWIS / NH0382010 / 2987

How Rosebrook Water Compares

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

Metric Rosebrook Water New Hampshire avg Federal benchmark
Total violations 172 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 52 12.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 45.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,050 506 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 Rosebrook Water water safe to drink? ▼
Rosebrook Water (PWS ID: NH0382010) has 172 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,050 people using Groundwater sources.
How many people does Rosebrook Water serve? ▼
Rosebrook Water serves 1,050 people in Monroe, New Hampshire. It is a Private-owned system using Groundwater water sources with 415 service connections.
What type of violations does Rosebrook Water have? ▼
Rosebrook Water has 172 total violations: 52 health-based violations (MCL exceedances or treatment failures), 110 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Rosebrook Water water? ▼
No PFAS testing data is available for Rosebrook Water under the EPA's UCMR5 monitoring program.
What water source does Rosebrook Water use? ▼
Rosebrook Water 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.