Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA5010010
PWS Name	MODESTO, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	218771
County Served	Stanislaus

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9610018	Returned to Compliance	01-AUG-2013	31-AUG-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	710020	Returned to Compliance	01-MAR-2007	31-MAR-2007	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	110019	Returned to Compliance	01-JAN-2001	31-JAN-2001	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9610017	Returned to Compliance	01-FEB-1996	29-FEB-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9510015	Returned to Compliance	01-SEP-1995	30-SEP-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9510010	Returned to Compliance	01-MAY-1995	31-MAY-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9510006	Returned to Compliance	01-OCT-1994	31-OCT-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9410008	Returned to Compliance	01-AUG-1994	31-AUG-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9410009	Returned to Compliance	01-JUL-1994	31-JUL-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9410018	Returned to Compliance	01-NOV-1993	01-OCT-1997	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9410005	Returned to Compliance	01-NOV-1993	30-NOV-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9310004	Returned to Compliance	01-JUL-1993	31-JUL-1993	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9310003	Returned to Compliance	01-JUN-1993	30-JUN-1993	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9310002	Returned to Compliance	01-NOV-1992	30-NOV-1992	Yes

1 - 14 of 14

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9810017	9610018	SOX	State Compliance achieved	13-SEP-2013	State	Complied with directives of the citation 03-10-13C-004
710029	710020	SOX	State Compliance achieved	12-APR-2007	State	ENF_NO:03-10-07C-002; RETURNED TO COMPLIANCE NOTIFIED PUBLIC
9810018	110019	SOX	State Compliance achieved	28-FEB-2001	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
1010035	9410018	SOX	State Compliance achieved	09-OCT-1997	State	RETURNED TO COMPLIANCE
9710012	9610017	SOX	State Compliance achieved	01-MAY-1996	State	RETURNED TO COMPLIANCE
9710012	9510015	SOX	State Compliance achieved	01-MAY-1996	State	RETURNED TO COMPLIANCE
9710012	9510010	SOX	State Compliance achieved	01-MAY-1996	State	RETURNED TO COMPLIANCE
9510011	9410009	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9410008	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9410005	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9310004	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9310003	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9310002	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE
9510011	9510006	SOX	State Compliance achieved	01-AUG-1995	State	RETURNED TO COMPLIANCE

1 - 14 of 14

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MODESTO IRR DISTRICT - PURCHASED-TREATED	33386	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 031 - AGRICULTURAL	8516	Yes	Well	Ground water	Permanent	Inactive
MANCINI WELL - AGRICULTURAL	8511	Yes	Well	Ground water	Permanent	Inactive
WELL 013 - AGRICULTURAL	8509	Yes	Well	Ground water	Permanent	Inactive
WELL 310 - DESTROYED	14063	Yes	Well	Ground water	Permanent	Inactive
WELL 277	13967	Yes	Well	Ground water	Permanent	Inactive
WELL 278	13955	Yes	Well	Ground water	Permanent	Inactive
WELL 312	13942	Yes	Well	Ground water	Permanent	Inactive
WELL 307 - DESTROYED	13536	Yes	Well	Ground water	Permanent	Inactive
WELL NO. 67 - TREATED	63714	Yes	Well	Ground water	Permanent	Active
WELL 67	63713	Yes	Well	Ground water	Permanent	Active
WELL 214	22056	Yes	Well	Ground water	Permanent	Active
WELL 006	14545	Yes	Well	Ground water	Permanent	Active
WELL 265	13988	Yes	Well	Ground water	Permanent	Active
WELL 283 - RAW	13987	Yes	Well	Ground water	Permanent	Active
WELL 216	13986	Yes	Well	Ground water	Permanent	Active
WELL 217	13985	Yes	Well	Ground water	Permanent	Active
WELL 223 - RAW	13984	Yes	Well	Ground water	Permanent	Active
WELL 284	13983	Yes	Well	Ground water	Permanent	Active
WELL 287	13982	Yes	Well	Ground water	Permanent	Active
WELL 262	13981	Yes	Well	Ground water	Permanent	Active
WELL 264	13980	Yes	Well	Ground water	Permanent	Active
WELL 241	13976	Yes	Well	Ground water	Permanent	Active
WELL 051	13974	Yes	Well	Ground water	Permanent	Active
WELL 050	13973	Yes	Well	Ground water	Permanent	Active
WELL 049 - RAW	13972	Yes	Well	Ground water	Permanent	Active
WELL 048	13971	Yes	Well	Ground water	Permanent	Active
WELL 047	13970	Yes	Well	Ground water	Permanent	Active
WELL 046	13969	Yes	Well	Ground water	Permanent	Active
WELL 259	13968	Yes	Well	Ground water	Permanent	Active
WELL 301 - RAW	13966	Yes	Well	Ground water	Permanent	Active
WELL 304 - RAW	13965	Yes	Well	Ground water	Permanent	Active
WELL 305 - RAW	13964	Yes	Well	Ground water	Permanent	Active
WELL 211	13963	Yes	Well	Ground water	Permanent	Active
WELL 212 - RAW	13962	Yes	Well	Ground water	Permanent	Active
WELL 225 - RAW	13960	Yes	Well	Ground water	Permanent	Active
WELL 247	13959	Yes	Well	Ground water	Permanent	Active
WELL 237	13958	Yes	Well	Ground water	Permanent	Active
WELL 269	13957	Yes	Well	Ground water	Permanent	Active
WELL 236 - RAW	13956	Yes	Well	Ground water	Permanent	Active
WELL 279 - RAW	13954	Yes	Well	Ground water	Permanent	Active
WELL 291 - RAW	13953	Yes	Well	Ground water	Permanent	Active
WELL 292 - RAW	13952	Yes	Well	Ground water	Permanent	Active
WELL 042	13948	Yes	Well	Ground water	Permanent	Active
WELL 267	13947	Yes	Well	Ground water	Permanent	Active
WELL 64	13945	Yes	Well	Ground water	Permanent	Active
WELL 66	13944	Yes	Well	Ground water	Permanent	Active
WELL 62	13943	Yes	Well	Ground water	Permanent	Active
WELL 65 - RAW	13941	Yes	Well	Ground water	Permanent	Active
WELL 045	13937	Yes	Well	Ground water	Permanent	Active

1 - 50 of 276

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 65 - TREATED	2100	Hypochlorination, Post	Disinfection
WELL 312 - TREATED	2101	Hypochlorination, Post	Disinfection
WELL 62 - TREATED	2102	Hypochlorination, Post	Disinfection
WELL 66 - TREATED	2103	Ion Exchange	Inorganics removal
WELL 64 - TREATED	2104	Gaseous Chlorination, Post	Disinfection
WELL 61 - TREATED - INACTIVE	2105	Hypochlorination, Pre	Disinfection
WELL 63 - TREATED	2106	Hypochlorination, Pre	Disinfection
WELL 236 - TRTEATED	2107	Hypochlorination, Post	Disinfection
WELL 291 - TREATED - GAC	2120	Hypochlorination, Post	Disinfection
WELL 054 - TREATED	2131	Hypochlorination, Post	Disinfection
WELL 247 - TREATED	2132	Hypochlorination, Post	Disinfection
WELL 225 - TREATED - GAC	2133	Hypochlorination, Post	Disinfection
WELL 211 - TREATED	2134	Hypochlorination, Post	Disinfection
WELL 204 - DESTROYED	2135	Hypochlorination, Post	Disinfection
WELL 057 - TREATED	2138	Hypochlorination, Post	Disinfection
WELL 277 - TREATED	2142	Hypochlorination, Post	Disinfection
WELL 052 - TREATED	2143	Hypochlorination, Post	Disinfection
WELL 056 - TREATED	2144	Hypochlorination, Post	Disinfection
WELL 100 - DESTROYED	2145	Ion Exchange	Inorganics removal
WELL 051 - TREATED	2146	Hypochlorination, Post	Disinfection
WELL 050 - TREATED	2147	Hypochlorination, Post	Disinfection
WELL 049 - TREATED	2148	Hypochlorination, Post	Disinfection
WELL 048 - TREATED	2149	Hypochlorination, Post	Disinfection
WELL 047 - TREATED	2150	Hypochlorination, Post	Disinfection
WELL 046 - TREATED	2151	Hypochlorination, Post	Disinfection
WELL 301 - TREATED	2153	Hypochlorination, Post	Disinfection
WELL 279 - TREATED - GAC	2156	Hypochlorination, Post	Disinfection
WELL 212 - TREATED - GAC	2157	Hypochlorination, Post	Disinfection
WELL 212 - TREATED - GAC	2157	Activated Carbon, Granular	Organics removal
WELL 030 - TREATED - GAC	2159	Hypochlorination, Post	Disinfection
WELL 030 - TREATED - GAC	2159	Activated Carbon, Granular	Organics removal
WELL 038 - TREATED	2160	Hypochlorination, Post	Disinfection
WELL 038 - TREATED	2160	Activated Carbon, Granular	Organics removal
WELL 267 - TREATED	2163	Hypochlorination, Post	Disinfection
WELL 292 - TREATED - GAC	2164	Hypochlorination, Post	Disinfection
WELL 269 - TREATED	2165	Hypochlorination, Post	Disinfection
WELL 283 - TREATED	2166	Hypochlorination, Post	Disinfection
WELL 232 - TREATED - INACTIVE	2167	Hypochlorination, Post	Disinfection
WELL 229 - DESTROYED	2169	Hypochlorination, Post	Disinfection
WELL 310 - DESTROYED	2170	Hypochlorination, Post	Disinfection
WELL 308 - TREATED	2171	Hypochlorination, Post	Disinfection
WELL 307 - DESTROYED	2172	Hypochlorination, Post	Disinfection
WELL 278 - TREATED	2173	Hypochlorination, Post	Disinfection
WELL 043 - TREATED - INACTIVE	2243	Hypochlorination, Post	Disinfection
WELL 045 - TREATED	2266	Hypochlorination, Post	Disinfection
WELL 007 - TREATED	2355	Hypochlorination, Post	Disinfection
WELL 006 - TREATED	2356	Hypochlorination, Post	Disinfection
WELL 004 - DESTROYED	2357	Hypochlorination, Post	Disinfection
WELL 241 - TREATED	2358	Hypochlorination, Post	Disinfection
WELL 300 - TREATED	2361	Hypochlorination, Post	Disinfection

1 - 50 of 91

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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