Public water system record
City of Sunnyvale
Serves Sunnyvale, Santa Clara County, CA · 157,566 people served
Federal records show no health-based violations and 63 monitoring/reporting issues for City of Sunnyvale in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 63
Key facts
- City of Sunnyvale draws water from 7 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, April 2015.
- Record on file since 1992, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 28,509 service lines.
Check whether City of Sunnyvale serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlordane
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2015 | Resolved |
Full record since 1992
EPA's records for City of Sunnyvale go back to 1992. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 65 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 2 |
| 2010 to October 18, 2016 | 1 | 63 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began March 2015, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1992 | Resolved |
Enforcement actions
California regulators took 4 formal enforcement actions against City of Sunnyvale between 1992 and 2015. The most recent was a compliance order (no penalty) in April 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 21, 2015 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Apr 2, 1997 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Apr 9, 1993 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Apr 3, 1992 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
Where the water comes from
City of Sunnyvale draws water from 7 wells (1 of them for emergency, seasonal or other part-time use). It also buys water from Santa Clara Valley Water District and San Francisco Regional Water System. It also has emergency connections to CWSC Los Altos Suburban, City of Cupertino and City of Mountain View. 2 other public water systems have emergency connections to City of Sunnyvale.
Buys water from
- Santa Clara Valley Water District San Jose, CA
- San Francisco Regional Water System Burlingame, CA
Emergency or part-time connections to
- CWSC Los Altos Suburban San Jose, CA
- City of Cupertino San Jose, CA
- City of Mountain View Mountain View, CA
Annual water quality report
City of Sunnyvale must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells