Question 1

Is Clark Rural Water System water safe to drink?

Accepted Answer

Clark Rural Water System (PWS ID: SD4600881) has 68 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 2,325 people using Groundwater sources.

Question 2

How many people does Clark Rural Water System serve?

Accepted Answer

EPA SDWIS reports that Clark Rural Water System serves 2,325 people (this public water system's service population, not the municipal population of Clark or any other city). It is a Private-owned system using Groundwater water sources with 1,080 service connections. The operator address is listed in Clark, South Dakota.

Question 3

What type of violations does Clark Rural Water System have?

Accepted Answer

Clark Rural Water System has 68 total violations: 2 health-based violations (MCL exceedances or treatment failures), 64 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Clark Rural Water System water?

Accepted Answer

No PFAS testing data is available for Clark Rural Water System under the EPA's UCMR5 monitoring program.

Question 5

What water source does Clark Rural Water System use?

Accepted Answer

Clark Rural Water System 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 Clark Rural Water System sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Clark Rural Water System ranks #12,490 of 29,740 by people served, and #63 of 171 in South Dakota. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Clark Rural Water System's violation count compare nationally?

Accepted Answer

Clark Rural Water System has 68 recorded EPA SDWIS violations, fewer than 35% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 64% of that cohort has fewer violations than Clark Rural Water System. 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
Acrylamide	TT	2	2004
Heptachlor epoxide	MR	2	1996
Atrazine	MR	2	1996
Total Polychlorinated Biphenyls (PCB)	MR	2	1996
Endrin	MR	2	1996
BHC-GAMMA	MR	2	1996
Dalapon	MR	2	1996
2,4,5-TP	MR	2	1996
Pentachlorophenol	MR	2	1996
Picloram	MR	2	1996
Aldicarb sulfone	MR	2	1996
Aldicarb sulfoxide	MR	2	1996
OXAMYL	MR	2	1996
Glyphosate	MR	2	1996
Endothall	MR	2	1996
Diquat	MR	2	1996
1,2-DIBROMO-3-CHLOROPROPANE	MR	2	1996
ETHYLENE DIBROMIDE	MR	2	1996
Aldicarb	MR	2	1996
Hexachlorocyclopentadiene	MR	2	1996
2,4-D	MR	2	1996
Chlordane	MR	2	1996
LASSO	MR	2	1996
Methoxychlor	MR	2	1996
HEXACHLOROBENZENE	MR	2	1996
Dinoseb	MR	2	1996
Heptachlor	MR	2	1996
Di(2-ethylhexyl) phthalate	MR	2	1996
Carbofuran	MR	2	1996
Simazine	MR	2	1996

Clark Rural Water System

Clark Rural Water System standing, mid SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Clark Rural Water System

Nationwide peers

Cross-state systems near this violation count

Cross-state systems near this population served