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 | ||
|---|---|---|---|---|---|
| EdMallon | "A visiting researcher dropped by our humble basement workshop with questions about the physical skill level students would need if they added one o..." | Read more » | over 6 years ago | |||
| imvec | "hahhahahah!!! added link to the very first line ;D " | Read more » | over 6 years ago | |||
| warren | "Very cool!!!! Haha for those new here, it's the Coquí, not the frog! " | Read more » | over 6 years ago | |||
| xose | "A bit late but here is how to plug the jack https://publiclab.org/notes/imvec/06-08-2018/adding-a-jack-to-the-coqui " | Read more » | over 6 years ago | |||
| xose | "Deffinitely! On wednesday i'll post the mod ;) " | Read more » | over 6 years ago | |||
| warren | "This is really cool. A recording would mean you could calibrate it later, too -- if you maybe dipped it in 2 different high and low solutions of kn..." | Read more » | over 6 years ago | |||
| warren | "Oooooohhhhhhhh!!!!! " | Read more » | over 6 years ago | |||
| xose | "Added a 3.5mm jack to record the wave ;D " | Read more » | over 6 years ago | |||
| EdMallon | "I had a project that needed some live data display, and looking for the cheapest low-power solution for our loggers lead me to the Nokia 5110 LCD. ..." | Read more » | over 6 years ago | |||
| warren | "Hi! I made a bookletized version of the pdf for printing on half-letter-sized paper -- Booklet_Sensor_Journalism_Final.pdf " | Read more » | over 6 years ago | |||
| warren | "@kanarinka - we're planning to order a bunch of these to test out at MakeFaire SF at the end of may -- getting ready for a big order, and printing ..." | Read more » | over 6 years ago | |||
| warren | " " | Read more » | over 6 years ago | |||
| warren | "Looks like @shantler, @anngneal and @donblair have written a bit about this! https://publiclab.org/notes/shanlter/07-03-2017/monitor-transparency-..." | Read more » | over 6 years ago | |||
| stoft | "Pollution comes in many forms and many of the worst contaminants will not alter the appearance so visible light spectrometers (i.e. PLab types) wil..." | Read more » | over 6 years ago | |||
| Ag8n | "We always went with the longest path length. The visual test was done with 50 cm color comparison tubes. Very long for visual. Maybe you could d..." | Read more » | over 6 years ago | |||
| amirberAgain | "Be careful! light in the 450-480nm range (royal blue) is dangerous to unprotected eyes! 430 is not as bad but be aware! http://www.cree.com/led-com..." | Read more » | over 6 years ago | |||
| amirberAgain | "Can you measure pure water? Probably so! While largely transparent in the visible water absorb in the 700-850nm range, note that to image in that r..." | Read more » | over 6 years ago | |||
| thangvu | "I have no solution for multi-wavelength source like a spectrometer. I will try with another wavelength. " | Read more » | over 6 years ago | |||
| thangvu | "Thanks for your answer, I have the standard solution of 5-10-20..70 pt / cb (I borrowed), according to the standard method, when measured at 430nm,..." | Read more » | over 6 years ago | |||
| Ag8n | "Do you know what APHA values you will be observing? I was typically observing values under 25. And yes, a florescent light was very helpful again..." | Read more » | over 6 years ago | |||
| Ag8n | "If you used the right lamp, you would be ok. You need to use a broadband source, as stoft noted. " | Read more » | over 6 years ago | |||
| thangvu | "My idea is to use a 430nm wavelength to measure the color of the water, so, I use a 430nm (+ - 10nm) led as the source, but the 430nm led seems to ..." | Read more » | over 6 years ago | |||
| thangvu | "sorry for saying it is unclear, with wastewater, the color of the water partly assesses the level of water pollution. " | Read more » | over 6 years ago | |||
| stoft | "Depending on what information is needed from the spectrum (i.e. like the entire available spectrum, using a CLF will not be useful. A broadband sou..." | Read more » | over 6 years ago |