Question 1

Is Willow Creek S/D water safe to drink?

Accepted Answer

Willow Creek S/D (PWS ID: NC0392230) has 166 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 74 people using Groundwater sources.

Question 2

How many people does Willow Creek S/D serve?

Accepted Answer

EPA SDWIS reports that Willow Creek S/D serves 74 people (this public water system's service population, not the municipal population of Cary or any other city). It is a Private-owned system using Groundwater water sources with 29 service connections. The operator address is listed in Cary, North Carolina.

Question 3

What type of violations does Willow Creek S/D have?

Accepted Answer

Willow Creek S/D has 166 total violations: 5 health-based violations (MCL exceedances or treatment failures), 139 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Willow Creek S/D water?

Accepted Answer

No PFAS testing data is available for Willow Creek S/D under the EPA's UCMR5 monitoring program.

Question 5

What water source does Willow Creek S/D use?

Accepted Answer

Willow Creek S/D uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

How does Willow Creek S/D's violation count compare nationally?

Accepted Answer

Willow Creek S/D has 166 recorded EPA SDWIS violations, fewer than 17% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 83% of that cohort has fewer violations than Willow Creek S/D. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Nitrate	MR	19	1995
Arsenic	MR	14	1993
Cadmium	MR	14	1993
Fluoride	MR	14	1993
Selenium	MR	14	1993
Mercury	MR	14	1993
Chromium	MR	14	1993
Barium	MR	14	1993
Coliform (TCR)	MCL	5	2012
Lead and Copper Rule	MR	4	1993
Gross Alpha, Excl. Radon and U	MR	4	1986
Consumer Confidence Rule	Other	3	2002
Combined Radium (-226 and -228)	MR	2	1980
Gross Beta Particle Activity	MR	2	1980
Beryllium, Total	MR	2	1993
CYANIDE	MR	2	1993
Thallium, Total	MR	2	1993
Antimony, Total	MR	2	1993
Nickel	MR	2	1993

Willow Creek S/D

Willow Creek S/D standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Willow Creek S/D

Nationwide peers

Cross-state systems with comparable violation load