Harrison Water District
Community water system in Harrison, Cumberland County, Maine, serving 863 people from ground water. 4 rules violated in the past three years, 2 still unresolved. Owned by local government.
Quarterly compliance history
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
2026
Still in violation
EPA data updated Oct 7, 2026
Consumer Confidence Rule (CCR)
Community water systems must deliver an annual water quality report (Consumer Confidence Report) to all customers by July 1, covering the previous year.
Consumer Confidence Rule (CCR)
Community water systems must deliver an annual water quality report (Consumer Confidence Report) to all customers by July 1, covering the previous year.
What it means: Community water systems must deliver an annual water quality report (Consumer Confidence Report) to all customers by July 1, covering the previous year. It must list all detected contaminants, compare them to MCLs, identify source water, and include educational language about lead. A violation means the report was not delivered on time or was incomplete.
Health effects: No direct health risk — this is an administrative transparency obligation. Failure means customers lack information to make informed decisions (e.g., whether to use bottled water for infants when lead is elevated).
Limit: No MCL — this is a reporting requirement
About this rule
Lead and Copper Rule (LCR)
The 1991 LCR uses action levels rather than MCLs: if the 90th percentile of high-risk tap samples exceeds 15 ppb lead or 1.3 mg/L copper, the system must take…
Lead and Copper Rule (LCR)
The 1991 LCR uses action levels rather than MCLs: if the 90th percentile of high-risk tap samples exceeds 15 ppb lead or 1.3 mg/L copper, the system must take…
What it means: The 1991 LCR uses action levels rather than MCLs: if the 90th percentile of high-risk tap samples exceeds 15 ppb lead or 1.3 mg/L copper, the system must take escalating corrective actions. Violations typically indicate failure to maintain adequate corrosion control — the treatment that keeps lead from leaching out of pipes, solder, and fixtures.
Health effects: Lead: no safe level for children. Causes irreversible neurological damage, impaired cognitive development, behavioral problems, and reduced IQ in children under 6. In adults: hypertension, cardiovascular disease, kidney damage. Copper: acute gastrointestinal distress at high levels; liver/kidney damage at very high chronic levels.
Limit: Action levels: lead 15 ppb, copper 1.3 mg/L — 90th percentile of tap samples at high-risk sites
About this ruleAlso violated in the past three years
Oct to Dec 2023 to Oct to Dec 2026
Diquat
Diquat is a broad-spectrum contact herbicide used to control aquatic weeds, algae, and terrestrial vegetation.
Diquat
Diquat is a broad-spectrum contact herbicide used to control aquatic weeds, algae, and terrestrial vegetation.
What it means: Diquat is a broad-spectrum contact herbicide used to control aquatic weeds, algae, and terrestrial vegetation. It remains in active use in the United States, applied directly to water bodies and irrigation canals. Diquat binds tightly to soil but can enter surface water directly during aquatic applications.
Health effects: Chronic exposure to diquat is associated with cataracts and kidney damage in animal studies. Acute high-level exposure causes gastrointestinal distress. EPA has not classified diquat as a human carcinogen. Individuals with kidney conditions may be at elevated risk from chronic exposure.
Limit: 0.02 mg/L (20 ppb)
About this contaminant
Endothall
Endothall is an aquatic and terrestrial herbicide used to control algae, weeds, and grass in irrigation canals, ponds, and lakes.
Endothall
Endothall is an aquatic and terrestrial herbicide used to control algae, weeds, and grass in irrigation canals, ponds, and lakes.
What it means: Endothall is an aquatic and terrestrial herbicide used to control algae, weeds, and grass in irrigation canals, ponds, and lakes. It is still in use in the United States and is applied directly to water bodies for aquatic vegetation management. It degrades relatively quickly in aquatic environments but can appear in source water shortly after application.
Health effects: Short-term exposure above the MCL can cause gastrointestinal irritation and stomach cramps. Chronic exposure is associated with liver, kidney, and gastrointestinal damage in animal studies. EPA has not classified endothall as a human carcinogen. The general population is at risk from water system violations.
Limit: 0.1 mg/L (100 ppb)
About this contaminant
TTHM (Total Trihalomethanes)
TTHMs are four compounds — chloroform, bromodichloromethane, dibromochloromethane, bromoform — formed when chlorine reacts with organic matter in water.
TTHM (Total Trihalomethanes)
TTHMs are four compounds — chloroform, bromodichloromethane, dibromochloromethane, bromoform — formed when chlorine reacts with organic matter in water.
What it means: TTHMs are four compounds — chloroform, bromodichloromethane, dibromochloromethane, bromoform — formed when chlorine reacts with organic matter in water. They are among the most common disinfection byproducts and form more readily in surface water systems with high organic loads.
Health effects: Long-term exposure is associated with increased bladder cancer risk. Some studies link high TTHM exposure to adverse reproductive outcomes. Bromodichloromethane is classified as a possible human carcinogen.
Limit: 0.080 mg/L (80 ppb) locational running annual average (LRAA)
About this contaminantAbout this data
EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several in the same period. Unresolved means still in violation at EPA's latest data refresh. Measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
Service area from EPA's Public Water System Service Area Boundaries dataset: Random Forest method, Federal agency. The system's location is the centre of the service area EPA publishes for the system.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Maine records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.