Public water system

Public Water System (PWS) (EPA): Any water system providing water for human consumption for an average of at least 25 persons per day (or 15 or more service connections) and in use for at least 60 days each year. Further defined as follows: ...

Public water system: A system that provides piped water for human consumption to at least 15 service connections or regularly serves 25 individuals.

public water system. A system for the provision to the public of piped water for human consumption, If such system has at least fifteen service connections or regularly serves an average of at least 25 individuals at least 60 days out of the year.

Public Water System
Any water system which provides water to at least 25 people for at least 60 days annually. There are more than 170,000 PWSs providing water from wells, rivers and other sources to about 250 million Americans.

A public water system that regularly serves at least 25 of the same non-resident persons per day for more than six months per year.
Source: Terms of the Environment
...

A public water system that is not a community water system; e.g., the water supply at a campsite or national park.
Non-Compliance Coal ...

Maximum Contaminant Level (MCL) The highest (maximum) level of a contaminant allowed to go uncorrected by a public water system under federal or state regulations.

variance 1) A State with primacy may relieve a public water system from a requirement in respect to an MCL by granting a variance if certain conditions exist. These are: a) the system cannot meet the MCL in spite of the application of best ...

maximum contaminant level The highest level of a contaminant permissible in water in a public water system. master streamThe largest stream within a drainage basin into which all other streams flow.

Exemption: A state (with primacy) may exempt a public water system from a requirement involving a Maximum Contaminant Level (MCL), treatment technique, or both, if the system cannot comply due to compelling economic or other factors, ...

Secondary Drinking Water Regulations: Non-enforceable regulations applying to public water systems and specifying the maximum contamination levels that, in the judgment of EPA, are required to protect the public welfare.

The federal Safe Drinking Water Act requires states to provide each public water system with a source water assessment. Public water systems are then required to make the assessments available to the public.

Maximum Contaminant Level: The maximum permissible level of a contaminant in water which is delivered to the free flowing outlet of the ultimate user of a public water system, ...

public water system under federal or state regulations. Depending on the contaminant, allowable levels might be calculated as an average over time, or might be based on individual test results. Corrective steps are implemented if the MCL is exceeded.

Water Supplier- One who owns or operates a public water system.
Water Supply System- The collection, treatment, storage, and distribution of potable water from source to consumer.
Water Table- The level of groundwater.

A state with primacy may relieve a public water system from a requirement respecting an MCL, treatment technique, or both by granting an exemption if the system cannot comply due to compelling economic or other factors, ...

Wellhead Protection Area
A protected surface and subsurface zone surrounding a well or well field that supplies a public water system and through which contaminants could likely reach well water. ...

Sanitary Survey An on-site review of the water sources, facilities, equipment, operation and maintenance of a public water system to evaluate the adequacy of those elements for producing and distributing safe drinking water.

See also: Water, Environment, Waste, Contaminant, Pollutant