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NORTHWESTERN LANCASTER CO AUTH

PWS ID: PA7360164 · MANHEIM, Pennsylvania 17545

NORTHWESTERN LANCASTER CO AUTH serves 2,968 people in MANHEIM, Pennsylvania using Surface Water water sources. It has 166 recorded EPA violations, including 35 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: NORTHWESTERN LANCASTER CO AUTH

NORTHWESTERN LANCASTER CO AUTH is a local-owned community water system that delivers drinking water to 2,968 residents in MANHEIM, Pennsylvania (Lancaster County) through 844 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 166 total violations for this system , of which 35 (21%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 105 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 33 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 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. NORTHWESTERN LANCASTER CO AUTH's 166 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
2,968
Total Violations
166
Health-Based Violations
35
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
844
County
Lancaster
School/Daycare
No
MCL Violations
35
Monitoring Violations
105
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MCL 33 2011
Public Notice Other 23 2018
TTHM MR 16 2025
Nitrate MR 14 2011
Surface Water Treatment Rule MR 8 2017
Atrazine MR 7 2009
Total Haloacetic Acids (HAA5) MR 5 2016
Lead and Copper Rule MR 3 2005
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 2008
Coliform (TCR) MCL 2 1991
Arsenic MR 2 1994
Cadmium MR 2 1994
Fluoride MR 2 1994
Nickel MR 2 1994
Thallium, Total MR 2 1994
CYANIDE MR 2 1994
Barium MR 2 1994
Selenium MR 2 1994
Chromium MR 2 1994
Antimony, Total MR 2 1994
Beryllium, Total MR 2 1994
Mercury MR 2 1994
Chlorine MR 1 2006
cis-1,2-Dichloroethylene MR 1 1994
Xylenes, Total MR 1 1994
DICHLOROMETHANE MR 1 1994
o-Dichlorobenzene MR 1 1994
p-Dichlorobenzene MR 1 1994
1,1-Dichloroethylene MR 1 1994
1,2-Dichloroethane MR 1 1994

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 NORTHWESTERN LANCASTER CO AUTH.

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 PA7360164 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 NORTHWESTERN LANCASTER CO AUTH 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 TTHM MR 16 SDWIS / PA7360164 / 2950
2018 Public Notice Other 23 SDWIS / PA7360164 / 7500
2017 Surface Water Treatment Rule MR 8 SDWIS / PA7360164 / 0200
2016 Total Haloacetic Acids (HAA5) MR 5 SDWIS / PA7360164 / 2456
2011 Nitrate MCL 33 SDWIS / PA7360164 / 1040
2011 Nitrate MR 14 SDWIS / PA7360164 / 1040
2010 Nitrite MR 1 SDWIS / PA7360164 / 1041
2009 Atrazine MR 7 SDWIS / PA7360164 / 2050
2008 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 SDWIS / PA7360164 / 0600
2006 Chlorine MR 1 SDWIS / PA7360164 / 0999
2005 Lead and Copper Rule MR 3 SDWIS / PA7360164 / 5000
2003 Coliform (TCR) MR 1 SDWIS / PA7360164 / 3100
2000 2,4-D MR 1 SDWIS / PA7360164 / 2105
1996 Gross Alpha, Excl. Radon and U MR 1 SDWIS / PA7360164 / 4000
1995 LASSO MR 1 SDWIS / PA7360164 / 2051

How NORTHWESTERN LANCASTER CO AUTH Compares

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

Metric NORTHWESTERN LANCASTER CO AUTH Pennsylvania avg Federal benchmark
Total violations 166 150.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 35 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 2,968 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 NORTHWESTERN LANCASTER CO AUTH water safe to drink? ▼
NORTHWESTERN LANCASTER CO AUTH (PWS ID: PA7360164) has 166 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,968 people using Surface Water sources.
How many people does NORTHWESTERN LANCASTER CO AUTH serve? ▼
NORTHWESTERN LANCASTER CO AUTH serves 2,968 people in MANHEIM, Pennsylvania. It is a Local-owned system using Surface Water water sources with 844 service connections.
What type of violations does NORTHWESTERN LANCASTER CO AUTH have? ▼
NORTHWESTERN LANCASTER CO AUTH has 166 total violations: 35 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in NORTHWESTERN LANCASTER CO AUTH water? ▼
No PFAS testing data is available for NORTHWESTERN LANCASTER CO AUTH under the EPA's UCMR5 monitoring program.
What water source does NORTHWESTERN LANCASTER CO AUTH use? ▼
NORTHWESTERN LANCASTER CO AUTH uses Surface Water 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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