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 | ||
|---|---|---|---|---|---|
| nikete | "Hi @bronwen. Thanks for the helpful comment. We are currently building the first one in Berlin, with the goal of learning and providing some monito..." | Read more » | over 6 years ago | |||
| Bronwen | "Very cool! Where is this project located? I especially like the use of recycled/scavenged building materials, but am a little concerned that workin..." | Read more » | over 6 years ago | |||
| warren | "Hi, Catherine! This is so great. We're going to get this rolling (@bronwen and @amanda and I) to carry a Community Kit with these, as well. We're l..." | 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 | |||
| Ag8n | "The older usp method was based on hydrogen sulfide. This was later changed to a thioacetamide based test. This is better, but still not good. The..." | Read more » | over 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | over 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | over 6 years ago | |||
| MadTinker | "@youshen I think with the modifications that have been suggested, the particular RTC module that I've been using will work fine and support running..." | Read more » | over 6 years ago | |||
| youshen | "Wow, this is a cool project. By the way, have you solved the problem that the RTC module can not be compatible with 5V? I also used this RTC module..." | Read more » | over 6 years ago | |||
| cfastie | "That will be an interesting project to make a 5v Pro Mini data logger. I guess it will also include a 5v microSD module (the ones in the Mini Pearl..." | Read more » | over 6 years ago | |||
| MadTinker | "@cfastie Thanks Chris, I'd had forgotten this particular mod by Ed Mallon, and didn't notice the mods on your modules. I need to go back and review..." | Read more » | over 6 years ago | |||
| cfastie | "Ah, Arduino. Those DS3231 RTCs are designed to be used with a rechargeable coin cell (LIR2032) and they trickle current into the battery when curre..." | Read more » | over 6 years ago | |||
| MadTinker | "@warren Thanks. Perhaps, but if the info in the link is true, the solution is just finding a new RTC module that runs at 5V. I misread the power re..." | Read more » | over 6 years ago | |||
| warren | "Hmm! Maybe @cfastie could help with this issue? Very cool to see this in-progress! " | Read more » | over 6 years ago | |||
| Ag8n | "I like energy dispersive X-Ray florescence (EDXRF). It's non-distructive, low power, and relatively cheap. On the down side, it's hard to calibra..." | Read more » | over 6 years ago | |||
| MadTinker | "@Ag8n - yeah, pretty sure you're right about filtering. I also think there are some calibration issues that remain even with a perfect sample. Sti..." | Read more » | over 6 years ago | |||
| Ag8n | "Madtinker- I've seen "universal" pH indicators before. Interesting, using them with the spectrometer. You would probably need to filter the water..." | Read more » | over 6 years ago | |||
| MadTinker | "spectrophotometric technique: Ground and river water quality monitoring using a smartphone-based pH sensor " | Read more » | over 6 years ago | |||
| zengirl2 | "For a project I was looking at toxins in water and read about sunflower stalks being used for this purpose. There was even a startup in NJ, but not..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Hmm. This is surprising to me too. Iron-rich clay can readily adsorb arsenic under oxygen-rich conditions (this is actually the root of Bangladesh,..." | Read more » | almost 7 years ago | |||
| nshapiro | "Oh those are great finds! I would think for $18 that is probably just as (if not more) affordable as making it one's self (including labor time). I..." | Read more » | almost 7 years ago | |||
| Ag8n | "In the lab where both epa and fda testing was done, we always used the turbidity meter. We used color comparison tubes, too, just not for turbidit..." | Read more » | almost 7 years ago | |||
| warren | "This is relatively close to your question, or at least related! https://publiclab.org/questions/warren/02-01-2018/is-there-a-way-to-view-epa-s-tox..." | Read more » | almost 7 years ago | |||
| MadTinker | "DFRobot makes a Turbidity Sensor For Arduino (SKU:SEN0189). It's sitting in my forge right now and integrating it with a Mini-Pearl logger ( @cfast..." | Read more » | almost 7 years ago |