Question 1

Is Northern Sunrise WC Coronado water safe to drink?

Accepted Answer

Northern Sunrise WC Coronado (PWS ID: AZ0402013) has 160 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 553 people using Groundwater sources.

Question 2

How many people does Northern Sunrise WC Coronado serve?

Accepted Answer

EPA SDWIS reports that Northern Sunrise WC Coronado serves 553 people (this public water system's service population, not the municipal population of Sierra Vista or any other city). It is a Private-owned system using Groundwater water sources with 228 service connections. The operator address is listed in Sierra Vista, Arizona.

Question 3

What type of violations does Northern Sunrise WC Coronado have?

Accepted Answer

Northern Sunrise WC Coronado has 160 total violations: 3 health-based violations (MCL exceedances or treatment failures), 130 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 Northern Sunrise WC Coronado water?

Accepted Answer

No PFAS testing data is available for Northern Sunrise WC Coronado under the EPA's UCMR5 monitoring program.

Question 5

What water source does Northern Sunrise WC Coronado use?

Accepted Answer

Northern Sunrise WC Coronado 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

Where does Northern Sunrise WC Coronado sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Northern Sunrise WC Coronado ranks #27,353 of 29,740 by people served, and #385 of 413 in Arizona. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Northern Sunrise WC Coronado's violation count compare nationally?

Accepted Answer

Northern Sunrise WC Coronado has 160 recorded EPA SDWIS violations, fewer than 18% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 82% of that cohort has fewer violations than Northern Sunrise WC Coronado. 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
Coliform (TCR)	MR	53	2012
Consumer Confidence Rule	Other	10	2015
Nitrate	MR	5	2005
Coliform (TCR)	MCL	3	2006
Endothall	MR	3	2001
Gross Alpha, Excl. Radon and U	MR	3	1987
Chlorine	MR	2	2022
1,2,4-Trichlorobenzene	MR	2	2002
1,1-Dichloroethylene	MR	2	2002
1,2-Dichloroethane	MR	2	2002
Benzene	MR	2	2002
cis-1,2-Dichloroethylene	MR	2	2002
Xylenes, Total	MR	2	2002
o-Dichlorobenzene	MR	2	2002
1,1,2-Trichloroethane	MR	2	2002
Toluene	MR	2	2002
Styrene	MR	2	2002
DICHLOROMETHANE	MR	2	2002
Ethylbenzene	MR	2	2002
Carbon tetrachloride	MR	2	2002
trans-1,2-Dichloroethylene	MR	2	2002
1,1,1-Trichloroethane	MR	2	2002
p-Dichlorobenzene	MR	1	1998
BHC-GAMMA	MR	1	1998
Methoxychlor	MR	1	1998
Dalapon	MR	1	1998
Diquat	MR	1	1998
Glyphosate	MR	1	1998
Di(2-ethylhexyl) adipate	MR	1	1998
OXAMYL	MR	1	1998

Northern Sunrise WC Coronado

Northern Sunrise WC Coronado standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Northern Sunrise WC Coronado

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems with smaller service footprints