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Community Water System · PWS PA7670112

Mount Airy MHP

Landisburg, Pennsylvania 17040 - drinking water served from groundwater sources to 50 people, tracked in EPA SDWIS and UCMR5.

50
People served
336
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 336 drinking-water violations at Mount Airy MHP, 3% of them health-based - above the Pennsylvania per-system average.

336
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
50
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mount Airy MHP

Mount Airy MHP is a private-owned community water system that delivers drinking water to 50 residents in Landisburg, Pennsylvania (York County) through 18 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 336 total violations for this system , of which 9 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 287 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 Consumer Confidence Rule, recorded in 23 violations (Other). 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. Statewide, 173 of 389 UCMR5-tested systems have reported PFAS detections (44.5%).

Mount Airy MHP's 336 violations sit above the Pennsylvania 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
50
Total Violations
336
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
18
County
York
School/Daycare
No
MCL Violations
7
Monitoring Violations
287
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 23 2021
1,2,4-Trichlorobenzene MR 11 2018
Xylenes, Total MR 11 2018
o-Dichlorobenzene MR 11 2018
p-Dichlorobenzene MR 11 2018
1,1-Dichloroethylene MR 11 2018
1,2-Dichloroethane MR 11 2018
1,1,1-Trichloroethane MR 11 2018
Trichloroethylene MR 11 2018
Tetrachloroethylene MR 11 2018
CHLOROBENZENE MR 11 2018
Benzene MR 11 2018
Toluene MR 11 2018
cis-1,2-Dichloroethylene MR 11 2018
DICHLOROMETHANE MR 11 2018
Carbon tetrachloride MR 11 2018
1,1,2-Trichloroethane MR 11 2018
Ethylbenzene MR 11 2018
Styrene MR 11 2018
trans-1,2-Dichloroethylene MR 11 2018
1,2-Dichloropropane MR 11 2018
Groundwater Rule MR 10 2020
Nitrate MR 10 2022
Coliform (TCR) MR 9 2015
Chlorine MR 7 2015
Public Notice Other 7 2023
Coliform (TCR) MCL 7 2006
Revised Total Coliform Rule RPT 6 2019
Total Haloacetic Acids (HAA5) MR 5 2019
TTHM MR 5 2019

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 Mount Airy MHP.

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 PA7670112 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 Mount Airy MHP 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 Lead and Copper Rule MR 1 SDWIS / PA7670112 / 5000
2023 Public Notice Other 7 SDWIS / PA7670112 / 7500
2022 Nitrate MR 10 SDWIS / PA7670112 / 1040
2021 Consumer Confidence Rule Other 23 SDWIS / PA7670112 / 7000
2021 Mercury MR 5 SDWIS / PA7670112 / 1035
2020 Groundwater Rule MR 10 SDWIS / PA7670112 / 0700
2019 Revised Total Coliform Rule RPT 6 SDWIS / PA7670112 / 8000
2019 Total Haloacetic Acids (HAA5) MR 5 SDWIS / PA7670112 / 2456
2019 TTHM MR 5 SDWIS / PA7670112 / 2950
2018 1,2,4-Trichlorobenzene MR 11 SDWIS / PA7670112 / 2378
2018 Xylenes, Total MR 11 SDWIS / PA7670112 / 2955
2018 o-Dichlorobenzene MR 11 SDWIS / PA7670112 / 2968
2018 p-Dichlorobenzene MR 11 SDWIS / PA7670112 / 2969
2018 1,1-Dichloroethylene MR 11 SDWIS / PA7670112 / 2977
2018 1,2-Dichloroethane MR 11 SDWIS / PA7670112 / 2980

How Mount Airy MHP Compares

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

Metric Mount Airy MHP Pennsylvania avg Federal benchmark
Total violations 336 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 44.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 50 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 (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 Mount Airy MHP water safe to drink? ▼
Mount Airy MHP (PWS ID: PA7670112) has 336 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 50 people using Groundwater sources.
How many people does Mount Airy MHP serve? ▼
Mount Airy MHP serves 50 people in Landisburg, Pennsylvania. It is a Private-owned system using Groundwater water sources with 18 service connections.
What type of violations does Mount Airy MHP have? ▼
Mount Airy MHP has 336 total violations: 9 health-based violations (MCL exceedances or treatment failures), 287 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mount Airy MHP water? ▼
No PFAS testing data is available for Mount Airy MHP under the EPA's UCMR5 monitoring program.
What water source does Mount Airy MHP use? ▼
Mount Airy MHP 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.