Water Quality

IHWD follows all State of Colorado Regulations to ensure clean, safe drinking water for our community.  

On an annual basis, IHWD is required to report to our community a summary of our water testing and inspection results. 

These Consumer Confidence Reports (CCRs) are delivered to each customer before the end of June reporting results for the previous year. 

 A Sanitary Survey is an on-site review of a public water system by the health department for the purpose of evaluating the adequacy of the facilities to produce and distribute safe drinking water. Sanitary surveys are required by Article 11 of the Colorado Primary Drinking Water Regulations (CPDWRs).  

A Sanitary Survey was completed in July 2018 and all identified deficiencies have since been remedied. 

INDIAN HILLS WD - CO0130065 - 2019 CCR for 2018 (pdf)


IHWD2017ConsumerConfidence (pdf)


CO0130065 San Survey 08-10-2018 CDPHE Letter (pdf)


Links and Information

What are EPA's drinking water regulations for nitrate?


 The MCLG for nitrate is 10 mg/L or 10 ppm. EPA has set this level of protection based on the best available science to prevent potential health problems. EPA has set an enforceable regulation for nitrate, called a maximum contaminant level ( MCL ), at 10 mg/L or 10 ppm.  

Hardness of Water

An article by USGS:


IHWD has wells located in different water source areas. The hardness of the water in our upper well field is higher, effecting customers 

primarily in Zone 3. 


IHWD Nitrate Information:  The District's upper wells have higher raw water nitrate levels.   Our goal is to produce water with the lowest possible nitrate levels and we comply with all testing requirements. Our finished water nitrate range is  generally 6.0 - 8.0. 

IHWD has two ways to mitigate the higher levels: 

1. Blend low nitrate water from the lower wells.

2. Process the water through the nitrate removal treatment system. 

A IHWD Board/Community task force researched new nitrate removal technologies for our District in 2018 and our 

2019 updated Master Plan reviewed and made a recommendation so that we can upgrade our treatment processes in the future and continue producing clean safe drinking water for our community.