Hill Waterworks Cooperative
EPA ID: MD0190007 · 100 people served · 4 ZIP codes
Where compliant utilities carry no open actions, Hill Waterworks Cooperative shows 3 active EPA violations in the federal database for a service population of approximately 100.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Demographics
The Hill Waterworks Cooperative serves a community with a median household income of $81,420 and an estimated 7,690 residents across its service area. Approximately 81% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 71% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Hill Waterworks Cooperative's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Somerset County, Maryland rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Hill Waterworks Cooperative compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 6 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 6 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Nickel was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
HILL WATERWORKS COOPERATIVE (EPA ID: MD0190007) is a community water system in Maryland that serves approximately 100 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Average Home Safety Score: C (55/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| January 1, 2023 | Consumer Confidence Report Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 6 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 6 | No |
| Nickel | Inorganic | 3 | No |
| Surface Water Treatment Rule | Treatment Failure | 3 | No |
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Hill Waterworks Cooperative (MD0190007) on EPA.gov.
Frequently Asked Questions
Is Hill Waterworks Cooperative water safe to drink?
Hill Waterworks Cooperative has recorded 3 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Hill Waterworks Cooperative serve?
Hill Waterworks Cooperative serves approximately 100 people across 4 ZIP codes in Maryland.
Where does Hill Waterworks Cooperative get its water?
The primary water source is groundwater.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: HILL WATERWORKS COOPERATIVE Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
SWAs found no significant contamination sources but recommended regular monitoring.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Watershed exposure sources reported
Land-use and natural conditions identified in the utility's source-water assessment as potential contamination sources upstream of treatment.
Treatment classification and chemical list sourced from HILL WATERWORKS COOPERATIVE Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Hill Waterworks Cooperative (EPA ID: MD0190007) — request the latest Consumer Confidence Report or ask about specific contaminants.