PWSID: OK1021101 · Blackwell, OK · Serves 7,668 people
According to EPA Safe Drinking Water Information System (SDWIS), BLACKWELL MUNICIPAL AUTHORITY (PWSID OK1021101) in Blackwell, OK is listed as a CWS water system covering about 7,668 people. The same extract lists 58 health-based violation records spanning 1981-2025. Those 58 health-based rows for BLACKWELL MUNICIPAL AUTHORITY cover contaminants such as TTHM, Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
BLACKWELL MUNICIPAL AUTHORITY has 58 health-based violation records in this historical extract. Monitoring and reporting records are not included.
Population Served
7,668
Health-Based Violation Records
58
Distinct Contaminant Codes
5
Source Type
Surface Water
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. 5 distinct EPA contaminant codes appear in this system's record, including TTHM, Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule. Recorded violations span 1981–2025. Day-to-day primacy enforcement for this system runs through the Oklahoma 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 Oklahoma state drinking-water program's public portal.
What does EPA SDWIS list for BLACKWELL MUNICIPAL AUTHORITY?
BLACKWELL MUNICIPAL AUTHORITY has 58 health-based violation records in this historical extract. Monitoring and reporting records are not included. The system uses surface water water as its source.
How many people does BLACKWELL MUNICIPAL AUTHORITY serve?
BLACKWELL MUNICIPAL AUTHORITY serves 7,668 people in Blackwell, OK. It is classified as a CWS water system.
What violations does BLACKWELL MUNICIPAL AUTHORITY have?
BLACKWELL MUNICIPAL AUTHORITY has 58 health-based violation records in PlainEnviro's extract spanning 1981–2025. Monitoring and reporting records are not included.
What contaminants have been found in BLACKWELL MUNICIPAL AUTHORITY water?
Violations have been recorded for 5 contaminants. The most frequent: TTHM, Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule.
Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest BLACKWELL MUNICIPAL AUTHORITY on cumulative violation count (58) and EPA-reported population served (7,668).
Violation-count peers include CWM WATER AUTHORITY, THUNDERBIRD FARMS DWID, RPUMA. Population peers include FOUKE WSC, SOUTHWICK WATER DEPT, CITY OF KENNEDALE.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
BLACKWELL MUNICIPAL AUTHORITY (OK1021101) is drawn from EPA SDWIS. Nearby county systems in this extract include TONKAWA; NEWKIRK; KAY COUNTY RURAL WATER DISTRICT 7; KAY CO RWD #5 (DALE WATER CORP). Health-based rows (58 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services