Daily Archives: June 1, 2012

Wisconsin virus study intended to target Gov. Walker?

It should be no surprise that a study of viruses in ground water, that reveals nothing new scientifically, was released the friday before the recall election for Governor Scott Walker. This news article (click here) is a hit piece calling for EPA to step in and regulate disinfection of groundwater systems in Wisconsin.

It is obvious the intent of all this is to make the Governor and state look bad…..nice try, but this hit piece is a joke.

The Democrats in Wisconsin are desparate…..and should be ignored.

Press Spin: Arsenic is the go-to-pollutant to create a perceived crisis….

Arsenic has been the go-to chemical when environmental activitists want to push their agenda…..Not much good could be said about it….no one wants it in their drinking water….So whenever a new study is published, no matter how obscure, whether it is relevant or not, regardless of the study design, or its limitations….it gives activists a chance to make noise and push on EPA to lower their standard…..justified or not…..the current health goal is zero….can’t go much lower than that, even if it could be measured….

In this case, (click here) the current drinking water standard is being attacked intentionally……there is nothing new of substance in this article….just repackaged information wrapped in another mouse study…

In the run-up to the election of George W. Bush as President of the United States in 2000, USEPA pushed through the existing arsenic MCL just before the election. It would not surprise me at all to see USEPA try it again in the run-up to 2012 Presidential election. The USEPA Office of Ground Water and Drinking (OGWDW)  has bullied the private sector and utilities for many years will certainly try it again….whether needed or not…..

Wyoming offers cisterns to Pavillion residents

The state of Wyoming has offered 35 homes in rural Pavillion the option of  receiving a free cistern to ensure they have clean drinking and household water.

Click here for the news article…..

Borchardt et al virus study shows nothing new…..

These people are very late to the party….this issue was addressed in the previous decade, resulting in the EPA groundwater rule….but unfortunately, it is another ecological study design……telling us nothing new……but it is published in a government publication (Environmental Health Perspectives) and so it is getting press coverage by the activists….

Mark A. Borchardt, Susan K. Spencer, Burney Jr. A. Kieke, Elisabetta Lambertini, Frank J. Loge. Viruses in Non-Disinfected Drinking Water from Municipal Wells and Community Incidence of Acute Gastrointestinal Illness. Environ Health Perspect. http://dx.doi.org/10.1289/ehp.1104499

Background: Groundwater supplies for drinking water are frequently contaminated with low-levels of human enteric virus genomes, yet evidence for waterborne disease transmission is lacking.

Objectives: We relate qPCR-measured enteric viruses in the tap water of 14 communities supplied by non-disinfected groundwater, located in Wisconsin USA, to acute gastrointestinal illness (AGI) incidence.

Methods: AGI incidence was estimated from health diaries completed weekly by households within each study community during four 12-week periods. Water samples were collected monthly from five to eight households per community. Viruses were measured by qPCR and infectivity assessed by cell culture. AGI incidence was related to virus measures using Poisson regression with random effects.

Results: Communities and time periods with the highest virus measures had correspondingly high AGI incidence. This association was particularly strong for norovirus genogroup I (NoV-GI) and between adult AGI and enteroviruses when echovirus serotypes predominated. At mean concentrations of 1 and 0.8 genomic copies/L of NoV-GI and enteroviruses, respectively, the AGI incidence rate ratios (i.e., relative risk) increased by 30%. Adenoviruses were common, but tap water concentrations were low and not positively associated with AGI. The estimated fraction of AGI attributable to tap waterborne viruses was between 6% and 22%, depending on the virus exposure-AGI incidence model selected, and could have been as high as 63% among children less than five years old during the period when NoV-GI was abundant in drinking water.

Conclusions: The majority of groundwater-source public water systems in the USA produce water without disinfection. Our findings suggest that populations served by such systems may be exposed to waterborne viruses and consequent health risks.

Click here for the full paper (open source).

 

Stockton (CA) to startup new membrane filtration plant

Stockton, California is getting ready to start up a new membrane filtration plant, treating water from the Delta…..click here for news article….

Restoring fluorosis-stained teeth is costly…

Fluoride addition to drinking water is contributing to the increase of dental fluorosis….restoring fluorosis-stained teeth has a cost…..

Pontes DG, Correa KM, Cohen-Carneiro F. Re-establishing Esthetics of Fluorosis-Stained Teeth Using Enamel Microabrasion and Dental Bleaching Techniques. Eur J Esthet Dent. 2012 Summer;7(2):130-7.

Abstract: Dental fluorosis manifests itself as white stains on the enamel of teeth exposed to excessive doses of fluoride during their formation. Fluorosis usually occurs as a result of the ingestion of dentifrices, gels and fluoridated solutions. It may be diagnosed as mild, moderate or severe, and in some cases, it may cause the loss of the surface structure of dental enamel. The aim of this study was to report the clinical case of a female patient of 18 years with moderate fluorosis, whose smile was reestablished by the use of an enamel microabrasion technique, followed by in-office bleaching. A microabrasion technique with 6% hydrochloric acid associated with silica carbide showed to be a safe and efficient method for removing white fluorosis stains, while dental bleaching was useful for obtaining a uniform tooth shade. The association of these techniques presented excellent results and the patient was satisfied. Both techniques are painless, fast and easy to perform, in addition to preserving the dental structure. Treatment showed immediate and permanent results; this technique must be divulged among professionals and their patients.

California adopts new energy efficiency standards for construction

New standards adopted Thrusday take effect on Jan. 1, 2014. They apply to new construction of houses and buildings, major building additions, and retrofits.

Click here for a Sacramento Bee summary…..