National Primary Drinking Water Regulations | Ground Water and Drinking Water

The National Primary Drinking Water Regulations (NPDWR) are legally enforceable primary standards and treatment techniques that apply to public water systems. Primary standards and treatment techniques protect public health by limiting the levels of contaminants in drinking water.

[h2oIQ.org editor: Follow the link below to see the standards for the following categories:]

Microorganisms
Disinfectants
Disinfection Byproducts
Inorganic Chemicals
Organic Chemicals
Radionuclides

California: 15,000 cancer cases could stem from chemicals in tap water

Study estimates 15,000 cancer cases could stem from chemicals in California tap water

(CNN) A new study finds that drinking tap water in California over the course of a lifetime could increase the risk of cancer.

Researchers from the environmental advocacy group Environmental Working Group estimated that the contaminants found in public water systems in California could contribute to about 15,500 cancer cases there over the course of a lifetime. These contaminants include chemicals such as arsenic, hexavalent chromium and radioactive elements such … [more…]

EPA applauds UL for storm water management efforts

Photo: University of Louisiana, Lafayette

Photo: Increasing the number of bioswales on the University of Louisiana at Lafayette campus is one objective outlined in its green infrastructure plan. The shallow troughs hold plants and other vegetation. They act as sieves to remove silt and contaminants from rainwater. Credit: Rachel Keyes/University of Louisiana at Lafayette

The University of Louisiana at Lafayette made a splash with its storm water management plan.

Its plan – entitled The Ripple … [more…]

What is an ‘impaired’ waterway and why are so many in Pennsylvania?

What is an ‘impaired’ waterway and why are there so many of them in Pennsylvania?

Photo: Pennsylvania’s “Category 5” streams include the Juniata and Susquehanna rivers and many creeks, such as the Yellow Breeches in Cumberland County.

More than a third of Pennsylvania’s lakes and a fifth of its streams are impaired, meaning that pollution has (or should have, anyway) hindered their use for drinking water supplies, fishing, recreation or the aquatic life that call the waterways home.

Perhaps the best illustration of the scale … [more…]

Dioxane detected in Ann Arbor drinking water from Barton Pond for first time

Dioxane detected in Ann Arbor drinking water from Barton Pond for first time

ANN ARBOR, MI – Recent lab tests at Ann Arbor’s water treatment plant indicated 1,4-dioxane in the city’s surface water supply and in the finished drinking water.

Results from samples collected Feb. 6 estimated concentrations of 0.061 parts per billion at the city’s intake in Barton Pond and 0.030 ppb in the treated drinking water.

The city released the results on Friday, March 1, saying it’s important to let city … [more…]