CITY OF SUNNYVALE
PWSID: CA4310014 · Sunnyvale, CA · Serves 157,566 people
According to EPA Safe Drinking Water Information System (SDWIS), CITY OF SUNNYVALE (PWSID CA4310014) in Sunnyvale, CA is listed as a CWS water system covering about 157,566 people. The same extract lists 6 health-based violation records spanning 1995-2015. Those 6 health-based rows for CITY OF SUNNYVALE cover contaminants such as Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
CITY OF SUNNYVALE has 6 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Surface Water Treatment Rule. Recorded violations span 1995–2015. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA4310014
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Sunnyvale, CA
- Population Served
- 157,566
- Health Violations
- Yes (6)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Surface Water Treatment Rule | 6 | 6 |
Violation History (6)
| Contaminant | Health | Date |
|---|---|---|
| Surface Water Treatment Rule | Yes | Mar 1, 2015 |
| Surface Water Treatment Rule | Yes | Mar 1, 2015 |
| Surface Water Treatment Rule | Yes | Mar 1, 2015 |
| Surface Water Treatment Rule | Yes | Mar 1, 1995 |
| Surface Water Treatment Rule | Yes | Mar 1, 1995 |
| Surface Water Treatment Rule | Yes | Mar 1, 1995 |
Frequently Asked Questions
What does EPA SDWIS list for CITY OF SUNNYVALE?
How many people does CITY OF SUNNYVALE serve?
What violations does CITY OF SUNNYVALE have?
What contaminants have been found in CITY OF SUNNYVALE water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest CITY OF SUNNYVALE on cumulative violation count (6) and EPA-reported population served (157,566). Violation-count peers include CHEROKEE WATER SYSTEM, LAME DEER WATER SYSTEM, FOUR BEARS WATER SYSTEM. Population peers include ASHEVILLE CITY OF, CITY OF MIDLAND WATER PURIFICATION PLANT, ONSLOW WTR AND SEWER AUTHORITY.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
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About This Data
CITY OF SUNNYVALE (CA4310014) is drawn from EPA SDWIS. Health-based rows in this extract are MCL and Treatment Technique records spanning 1995-2015 covering Surface Water Treatment Rule. Historical registry entries, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.