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CENTENNIAL ESTATES

PWS ID: NH0613060 · DERRY, New Hampshire 03038

CENTENNIAL ESTATES serves 140 people in DERRY, New Hampshire using Groundwater water sources. It has 231 recorded EPA violations, including 17 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CENTENNIAL ESTATES

CENTENNIAL ESTATES is a private-owned community water system that delivers drinking water to 140 residents in DERRY, New Hampshire (Rockingham County) through 56 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 231 total violations for this system , of which 17 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 193 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 Coliform (TCR), recorded in 23 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. CENTENNIAL ESTATES's 231 violations sit above the New Hampshire average. Statewide, 23 of 51 UCMR5-tested systems have reported PFAS detections (45.1%). 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
140
Total Violations
231
Health-Based Violations
17
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
56
County
Rockingham
School/Daycare
No
MCL Violations
17
Monitoring Violations
193
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 23 2012
Coliform (TCR) MCL 13 2012
Public Notice Other 12 2012
E. COLI MR 4 2012
Nitrate MCL 4 2023
1,2,4-Trichlorobenzene MR 4 1996
Xylenes, Total MR 4 1996
DICHLOROMETHANE MR 4 1996
p-Dichlorobenzene MR 4 1996
1,1-Dichloroethylene MR 4 1996
trans-1,2-Dichloroethylene MR 4 1996
1,2-Dichloroethane MR 4 1996
1,1,1-Trichloroethane MR 4 1996
Carbon tetrachloride MR 4 1996
Trichloroethylene MR 4 1996
1,1,2-Trichloroethane MR 4 1996
CHLOROBENZENE MR 4 1996
Ethylbenzene MR 4 1996
Toluene MR 4 1996
1,2-Dichloropropane MR 4 1996
Vinyl chloride MR 4 1996
Gross Alpha, Excl. Radon and U MR 4 1996
Tetrachloroethylene MR 4 1996
Combined Radium (-226 and -228) MR 4 1996
cis-1,2-Dichloroethylene MR 4 1996
Benzene MR 4 1996
Styrene MR 4 1996
o-Dichlorobenzene MR 4 1996
Consumer Confidence Rule Other 3 2012
Endrin MR 2 2009

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 CENTENNIAL ESTATES.

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 NH0613060 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 Nitrate MCL 4 SDWIS / NH0613060 / 1040
2012 Coliform (TCR) MR 23 SDWIS / NH0613060 / 3100
2012 Coliform (TCR) MCL 13 SDWIS / NH0613060 / 3100
2012 Public Notice Other 12 SDWIS / NH0613060 / 7500
2012 E. COLI MR 4 SDWIS / NH0613060 / 3014
2012 Consumer Confidence Rule Other 3 SDWIS / NH0613060 / 7000
2009 Endrin MR 2 SDWIS / NH0613060 / 2005
2009 BHC-GAMMA MR 2 SDWIS / NH0613060 / 2010
2009 Methoxychlor MR 2 SDWIS / NH0613060 / 2015
2009 Toxaphene MR 2 SDWIS / NH0613060 / 2020
2009 Di(2-ethylhexyl) adipate MR 2 SDWIS / NH0613060 / 2035
2009 Picloram MR 2 SDWIS / NH0613060 / 2040
2009 Hexachlorocyclopentadiene MR 2 SDWIS / NH0613060 / 2042
2009 Carbofuran MR 2 SDWIS / NH0613060 / 2046
2009 Atrazine MR 2 SDWIS / NH0613060 / 2050

How CENTENNIAL ESTATES Compares

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

Metric CENTENNIAL ESTATES New Hampshire avg Federal benchmark
Total violations 231 63.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 17 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 140 506 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is CENTENNIAL ESTATES water safe to drink? ▼
CENTENNIAL ESTATES (PWS ID: NH0613060) has 231 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 140 people using Groundwater sources.
How many people does CENTENNIAL ESTATES serve? ▼
CENTENNIAL ESTATES serves 140 people in DERRY, New Hampshire. It is a Private-owned system using Groundwater water sources with 56 service connections.
What type of violations does CENTENNIAL ESTATES have? ▼
CENTENNIAL ESTATES has 231 total violations: 17 health-based violations (MCL exceedances or treatment failures), 193 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CENTENNIAL ESTATES water? ▼
No PFAS testing data is available for CENTENNIAL ESTATES under the EPA's UCMR5 monitoring program.
What water source does CENTENNIAL ESTATES use? ▼
CENTENNIAL ESTATES 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.

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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.

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