1. KATIE ENG DAYTON PICKERING JESSICA RICCIO RURY VELASQUEZ AND IAN BUCK Water Collection and Sanitation

2. Our Group

3. Problem Statement The conditions of the water in San Pablo are for the most part unknown There is an abundance of rainwater in the wet season and a lack of water for agricultural purposes in the dry season

4. Project Challenges Our proposed problem was not realized upon arriving in San Pablo  After observing the conditions in San Pablo, we discovered that a Slow Sand Filter was not the most appropriate technology for the people here The materials we needed were not always available Research and communication were difficult

5. Water Collection Gutter system on Casa Guateca Rainwater collection tank to be used in the kitchen area

6. Gutter System and Tank Designed wooden crutches to hold the gutters Connected the downspout to the collection tank using PVC Fixed leaks and erosion points caused by system

7. Water Sanitation Water sample tests from each source Water sample tests from house drinking and tap water

8. Water Testing from Sources Hiked to the four sources in San Pablo to take water samples Tested samples taken with test strips and turbid meter SourceSector Served 11 and 3 22 34 45

9. Water Sample Multi Meter Test Data- Sources SiteLocationTotal Dissolved Solids (mg/L) Dissolved Oxygen (mg/L) Turbidity (NTU) EPA StandardsUS National5005 (aquatic life)1 (95% of samples need to be below 0.3 NTU) Source 1Sector 1 and 342.884.550.0 Source 2Sector 532.644.40.0 Source 3Sector 249.924.610.0 Source 4Sector 428.84.410.0

10. Water Sample Coliform Test Data- Sources SiteLocationFecal Coliforms (col/100ml) Non-Fecal Coliforms (col/100ml) Total Coliform (col/100ml) s Aeromonas (col/100ml) Salmonella (col/100ml) EPA Standards US National Absent5% Positive Source 1Sector 1 and 3 0/020/40 20/600/0 Source 2Sector 50/0 20/2600/100 Source 3Sector 20/0 Source 4Sector 40/0240/100 0/32000/2400

11. Water Testing from Home Sources Took water samples from each group’s house in San Pablo Tested water samples with test strips and turbid meter HouseSector Casa Julio1 Casa Mimi3 Casa Yoni3 Casa Henry4 Casa Miguel4

12. Water Sample Test Data- Houses SiteLocationTotal Dissolved Solids (mg/L) Dissolved Oxygen (mg/L) pHTurbidity (NTU) EPA StandardsUS National5005 (aquatic life)6.5-8.51 (95% of samples need to be below 0.3 NTU) Casa de IanSac, CA101.125.176.630.0 Casa Mimi (Tap) Sector 337.125.795.000.0 Casa Mimi (Drinking) Sector 337.764.726.320.0 Casa Yoni (Drinking) Sector 339.043.055.640.0 Casa Julio (Tap)Sector 142.885.805.290.0 Casa Julio (Drinking) Sector 143.523.695.710.0 Casa Henry (Drinking) Sector 442.884.55.420.0 Casa Miguel (Drinking) Sector 440.324.615.450.0

13. Water Sample Coliform Test Data- Houses SiteLocationFecal Coliforms (col/100ml) (48/72 hr) Non-Fecal Coliforms (col/100ml) (48/72 hr) Total Coliform (col/100ml) (48/72 hr) Aeromonas (col/100ml) (48/72 hr) Salmonella (col/100ml) (48/72 hr) EPA Standards US NationalAbsent5% Positive Casa Mimi (Tap) Sector 30/00/20 1000/21000/0 Casa Mimi (Drinking) Sector 30/ 1600/0/ Casa Yoni (Drinking) Sector 30/ Casa Julio (Tap) Sector 10/020/0 1500/18000/20 Casa Julio (Drinking) Sector 10/0 20/400/20 Casa Henry (Drinking) Sector 40/080/240 5650/100001200/2000 Casa Miguel (Drinking) Sector 40/040/60 1800/50000/200

14. Future Project Continue testing on boiling water times v. effectiveness Come up with possible solutions for housing water sanitation Research Chlorination techniques used and appropriateness for San Pablo

15. Questions?