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CALAMUS ESTATES

PWS ID: PA7360032 · RONKS, Pennsylvania 17572

CALAMUS ESTATES serves 140 people in RONKS, Pennsylvania using Groundwater water sources. It has 159 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CALAMUS ESTATES

CALAMUS ESTATES is a private-owned community water system that delivers drinking water to 140 residents in RONKS, Pennsylvania (Lancaster County) through 81 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 159 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 146 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 Nitrate, recorded in 19 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 Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. CALAMUS ESTATES's 159 violations sit above the Pennsylvania average. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%). 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
159
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
81
County
Lancaster
School/Daycare
No
MCL Violations
0
Monitoring Violations
146
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 19 2020
Nitrite MR 14 2020
Coliform (TCR) MR 8 2008
Revised Total Coliform Rule MON 8 2024
Mercury MR 6 2018
Consumer Confidence Rule Other 6 2013
Revised Total Coliform Rule RPT 6 2018
Groundwater Rule MR 5 2025
Fluoride MR 4 2018
Radium-226 MR 4 2019
1,1-Dichloroethylene MR 3 2018
1,2-Dichloroethane MR 3 2018
1,1,1-Trichloroethane MR 3 2018
Carbon tetrachloride MR 3 2018
Trichloroethylene MR 3 2018
p-Dichlorobenzene MR 3 2018
Chlorine MR 3 2025
Benzene MR 3 2018
Combined Uranium MR 2 2016
Arsenic MR 2 2018
Barium MR 2 2018
Cadmium MR 2 2018
Nickel MR 2 2018
Selenium MR 2 2018
Antimony, Total MR 2 2018
Thallium, Total MR 2 2018
cis-1,2-Dichloroethylene MR 2 2018
Xylenes, Total MR 2 2018
DICHLOROMETHANE MR 2 2018
o-Dichlorobenzene MR 2 2018

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 CALAMUS 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 PA7360032 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects CALAMUS ESTATES under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP — Bureau of Safe Drinking Water

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 Groundwater Rule MR 5 SDWIS / PA7360032 / 0700
2025 Chlorine MR 3 SDWIS / PA7360032 / 0999
2024 Revised Total Coliform Rule MON 8 SDWIS / PA7360032 / 8000
2020 Nitrate MR 19 SDWIS / PA7360032 / 1040
2020 Nitrite MR 14 SDWIS / PA7360032 / 1041
2019 Radium-226 MR 4 SDWIS / PA7360032 / 4020
2019 Gross Alpha, Excl. Radon and U MR 2 SDWIS / PA7360032 / 4000
2018 Mercury MR 6 SDWIS / PA7360032 / 1035
2018 Revised Total Coliform Rule RPT 6 SDWIS / PA7360032 / 8000
2018 Fluoride MR 4 SDWIS / PA7360032 / 1025
2018 1,1-Dichloroethylene MR 3 SDWIS / PA7360032 / 2977
2018 1,2-Dichloroethane MR 3 SDWIS / PA7360032 / 2980
2018 1,1,1-Trichloroethane MR 3 SDWIS / PA7360032 / 2981
2018 Carbon tetrachloride MR 3 SDWIS / PA7360032 / 2982
2018 Trichloroethylene MR 3 SDWIS / PA7360032 / 2984

How CALAMUS ESTATES Compares

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

Metric CALAMUS ESTATES Pennsylvania avg Federal benchmark
Total violations 159 150.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 57.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 140 1,640 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

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 CALAMUS ESTATES water safe to drink? ▼
CALAMUS ESTATES (PWS ID: PA7360032) has 159 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 CALAMUS ESTATES serve? ▼
CALAMUS ESTATES serves 140 people in RONKS, Pennsylvania. It is a Private-owned system using Groundwater water sources with 81 service connections.
What type of violations does CALAMUS ESTATES have? ▼
CALAMUS ESTATES has 159 total violations: 0 health-based violations (MCL exceedances or treatment failures), 146 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CALAMUS ESTATES water? ▼
No PFAS testing data is available for CALAMUS ESTATES under the EPA's UCMR5 monitoring program.
What water source does CALAMUS ESTATES use? ▼
CALAMUS 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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