Silver
Cal-water Service Company - Chico
Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.
98
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 17 | 0 | ND |
| 2015 | ND | 16 | 0 | ND |
| 2016 | ND | 16 | 0 | ND |
| 2017 | ND | 27 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 15 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-21 | 5810-134-1010 | ND |
| 2014-02-05 | 5810-010-1048 | ND |
| 2014-02-05 | 5810-017-1250 | ND |
| 2014-02-05 | 5810-005-1018 | ND |
| 2014-02-11 | 5810-006-1047 | ND |
| 2014-03-04 | 5810-018-1120 | ND |
| 2014-03-11 | 5810-007-1107 | ND |
| 2014-04-09 | 5810-011-1025 | ND |
| 2014-05-12 | 5810-136-0930 | ND |
| 2014-05-12 | 5810-069-0910 | ND |
| 2014-05-28 | 5810-062-0820 | ND |
| 2014-06-04 | 5810-019-0858 | ND |
| 2014-07-14 | 5810-013-1030 | ND |
| 2014-08-12 | 5810-037-0904 | ND |
| 2014-08-13 | 5810-065-0825 | ND |
| 2014-09-16 | 5810-020-1003 | ND |
| 2014-10-13 | 5810-050-0945 | ND |
| 2015-01-14 | 5810-035-0820 | ND |
| 2015-02-24 | 5810-034-1030 | ND |
| 2015-02-25 | 5810-028-1120 | ND |
| 2015-03-03 | 5810-030-1150 | ND |
| 2015-04-13 | 5810-075-0958 | ND |
| 2015-05-13 | 5810-036-1044 | ND |
| 2015-05-13 | 5810-032-1000 | ND |
| 2015-05-13 | 5810-029-1310 | ND |
| 2015-05-20 | 5810-027-0915 | ND |
| 2015-06-09 | 5810-031-1020 | ND |
| 2015-06-09 | 5810-064-0915 | ND |
| 2015-06-16 | 5810-063-0910 | ND |
| 2015-07-14 | 5810-052-0700 | ND |
| 2015-08-06 | 5810-033-1005 | ND |
| 2015-08-11 | 5810-143-0845 | ND |
| 2015-09-14 | 5810-005-1025 | ND |
| 2016-02-17 | 5810-076-0830 | ND |
| 2016-02-17 | 5810-043-1018 | ND |
| 2016-02-24 | 5810-023-0955 | ND |
| 2016-03-09 | 5810-074-0930 | ND |
| 2016-04-13 | 5810-041-1105 | ND |
| 2016-04-13 | 5810-054-0810 | ND |
| 2016-04-13 | 5810-061-0830 | ND |
| 2016-04-20 | 5810-038-1315 | ND |
| 2016-05-17 | 5810-140-0840 | ND |
| 2016-05-17 | 5810-077-0830 | ND |
| 2016-05-17 | 5810-026-1240 | ND |
| 2016-07-12 | 5810-049-1230 | ND |
| 2016-08-10 | 5810-056-1014 | ND |
| 2016-08-10 | 5810-059-0846 | ND |
| 2016-10-12 | 5810-048-0825 | ND |
| 2016-10-12 | 5810-057-1128 | ND |
| 2017-01-11 | 5810-134-1320 | ND |
| 2017-01-18 | 5810-035-0837 | ND |
| 2017-02-15 | 5810-005-0945 | ND |
| 2017-02-15 | 5810-028-1305 | ND |
| 2017-02-15 | 5810-010-1150 | ND |
| 2017-02-15 | 5810-017-1018 | ND |
| 2017-03-13 | 5810-018-0805 | ND |
| 2017-03-15 | 5810-007-0853 | ND |
| 2017-03-16 | 5810-030-1115 | ND |
| 2017-03-16 | 5810-034-0600 | ND |
| 2017-04-19 | 5810-011-0850 | ND |
| 2017-05-11 | 5810-050-1135 | ND |
| 2017-05-11 | 5810-036-1200 | ND |
| 2017-05-17 | 5810-136-1120 | ND |
| 2017-05-23 | 5810-026-1315 | ND |
| 2017-06-07 | 5810-069-1120 | ND |
| 2017-06-07 | 5810-031-1230 | ND |
| 2017-06-07 | 5810-032-1200 | ND |
| 2017-06-12 | 5810-053-1255 | ND |
| 2017-06-26 | 5810-019-1329 | ND |
| 2017-06-28 | 5810-029-1145 | ND |
| 2017-07-27 | 5810-029-1208 | ND |
| 2017-08-21 | 5810-037-1210 | ND |
| 2017-08-21 | 5810-033-1240 | ND |
| 2017-08-21 | 5810-065-1150 | ND |
| 2017-09-20 | 5810-020-1240 | ND |
| 2017-10-25 | 5810-062-1158 | ND |
| 2018-04-12 | 5810-075-1255 | ND |
| 2018-06-12 | 5810-052-1312 | ND |
| 2018-06-18 | 5810-064-1247 | ND |
| 2018-06-20 | 5810-063-1154 | ND |
| 2018-07-18 | 5810-023-0830 | ND |
| 2018-08-15 | 5810-143-1201 | ND |
| 2018-10-30 | 5810-027-1253 | ND |
| 2019-02-20 | 5810-076-1257 | ND |
| 2019-02-20 | 5810-043-1253 | ND |
| 2019-03-26 | 5810-074-1211 | ND |
| 2019-04-10 | 5810-038-1205 | ND |
| 2019-04-11 | 5810-054-1201 | ND |
| 2019-04-17 | 5810-061-1230 | ND |
| 2019-04-17 | 5810-041-1202 | ND |
| 2019-05-14 | 5810-077-1200 | ND |
| 2019-05-15 | 5810-140-1202 | ND |
| 2019-07-02 | 5810-049-1249 | ND |
| 2019-07-22 | 5810-053-1250 | ND |
| 2019-08-27 | 5810-059-1201 | ND |
| 2019-08-27 | 5810-056-1232 | ND |
| 2019-10-14 | 5810-048-0816 | ND |
| 2019-10-29 | 5810-057-1223 | ND |