Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests: ### Questions on Water Quality: [questions:water-quality] **** ## Monitoring * [Water sampling](/water-sampling) * [Water sensors](/water-sensors) * Posts on #water-monitoring * Posts on #water-testing * Posts on #reagents ## Water quality parameters Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity: * https://publiclab.org/common-water-contaminants Also see this overview of 7 ways to monitorn water quality: * https://publiclab.org/notes/anngneal/12-08-2017/7-ways-to-measure-monitor-and-evaluate-water-quality ## Groups and projects working on water quality issues: [wikis:project:water-quality] **** ## Water quality related pages [wikis:parent:water-quality] **** ## Activities [activities:water-quality]...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| ajawitz | "Awesome! This is what I was hoping to see and then some. I don't think I've ever seen something go from brainstorm to schematic so quickly! I was..." | Read more » | about 10 years ago | |||
| donblair | "Jeff -- ah, I see -- good point! I don't think I'm finding the proper Visualight schematic ... file:///home/chronos/user/Downloads/strip_02-schema..." | Read more » | about 10 years ago | |||
| warren | "Also, did you do those completely rad illustrations? " | Read more » | about 10 years ago | |||
| warren | "Wow, Don - fantastic and super speedy work! One reason I was interested in the Visualight board was the strength of the LEDs -- really super brigh..." | Read more » | about 10 years ago | |||
| donblair | "Update: Amherst College has posted a follow-up on their Facebook page, here: https://www.facebook.com/amherstcollege/posts/690441407761 " | Read more » | over 10 years ago | |||
| cfastie | "DataStream " | Read more » | over 10 years ago | |||
| warren | "brooklog? " | Read more » | over 10 years ago | |||
| warren | "Something with "log" in it. WaterLog is taken :-P http://www.waterlog.com/ " | Read more » | over 10 years ago | |||
| warren | "Hey Don - do you have a catchy name for this sensor? Want to brainpolarvortex it? organizers call today! also it'd be a good thing to have as a wik..." | Read more » | over 10 years ago | |||
| mathew | "I am thoroughly impressed by the thoroughness of your construction system for the reference electrodes! these are awesome! " | Read more » | over 10 years ago | |||
| warren | "Read more here, too, about the event! http://publiclab.org/wiki/boston-toolshed-raising-2014 " | Read more » | over 10 years ago | |||
| warren | "Hi, Philipp -- I did end up adding a "smooth" macro, which i've demonstrated in this post: http://publiclab.org/notes/warren/10-09-2013/trying-to-d..." | Read more » | over 10 years ago | |||
| Suiris | "The test was just to measure the difference in clarity between tap water and filtered water, using a single wavelength instead of a white warm LED ..." | Read more » | over 10 years ago | |||
| Ernie | "I afraid that using a laser will not tell you much about the chemical composition of any contamints in your water. The laser spectrum is much too ..." | Read more » | over 10 years ago | |||
| Suiris | "Hi drabanus, The time span between each spectra was less than 30 seconds and the LED light had been on for quiet some time before I began the tests..." | Read more » | over 10 years ago | |||
| Suiris | "Hi Ernie, Thanks for the great advice and information. To be honest I am completely new to te spectrometer hobby and most of what you wrote baffles..." | Read more » | over 10 years ago | |||
| drabanus | "One other test to characterize the stability of your spectrometer is to just repeat identical measurements after a certain time span, say minutes, ..." | Read more » | over 10 years ago | |||
| Ernie | "Some typo's in my previous post: To normalize your sample spectrum, you will want (delete "you") to divide... Use an (delete "sample") empty bottle..." | Read more » | over 10 years ago | |||
| Ernie | "I hope your system is mechanically stable so as to get reproducible spectra. With regard to the illumination spectrum (the LED), it is not truly w..." | Read more » | over 10 years ago | |||
| Suiris | "I am using a Canon IXUS 120 IS for taking pictures, then I cut out the spectrum from the black background, paste it as a new image and upload it t..." | Read more » | over 10 years ago | |||
| danbeavers | "OK then I would like to know about your work flow. Are you using a camera attached to your computer or are you taking a picture and then processing..." | Read more » | over 10 years ago | |||
| Suiris | "I noticed the shift too danbeavers. My thoughts are that when I cut out the spectrum from my image and pasted it as a new image I wasn´t carefull w..." | Read more » | over 10 years ago | |||
| danbeavers | "I wonder about the peaks appearing to shift between different exposures. Looking at the left most peak the filtered 8 second exposure is to the ri..." | Read more » | over 10 years ago | |||
| Suiris | "Boiling the samples down to half their volume is a great idea! Will try that next time and see if there are any volatile contaminants. " | Read more » | over 10 years ago |